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    <link:label id="lab_ifrs-full_PaymentsOfOtherEquityInstruments_bf161528-7b74-40b3-adfa-bb558e5b6a8d_negatedTerseLabel_es" xlink:label="lab_ifrs-full_PaymentsOfOtherEquityInstruments" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Payments of other equity instruments</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_PaymentsOfOtherEquityInstruments" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_PaymentsOfOtherEquityInstruments"/>
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    <link:label id="lab_ifrs-full_InterestPaidClassifiedAsOperatingActivities_f9321009-9c69-49ee-be6f-63ddce168292_negatedTerseLabel_es" xlink:label="lab_ifrs-full_InterestPaidClassifiedAsOperatingActivities" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Interest paid, classified as operating activities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_InterestPaidClassifiedAsOperatingActivities" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_InterestPaidClassifiedAsOperatingActivities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_InterestPaidClassifiedAsOperatingActivities" xlink:to="lab_ifrs-full_InterestPaidClassifiedAsOperatingActivities" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_IncreaseDecreaseThroughTreasuryShareTransactions_7e19d64f-6d57-4206-941e-257efa284e15_terseLabel_es" xlink:label="lab_ifrs-full_IncreaseDecreaseThroughTreasuryShareTransactions" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Increase (decrease) through treasury share transactions, equity</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_IncreaseDecreaseThroughTreasuryShareTransactions" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_IncreaseDecreaseThroughTreasuryShareTransactions"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_IncreaseDecreaseThroughTreasuryShareTransactions" xlink:to="lab_ifrs-full_IncreaseDecreaseThroughTreasuryShareTransactions" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_StatementOfChangesInEquityTable_bc8f6f3f-97bd-41ee-bc9d-6db82a45b15a_terseLabel_es" xlink:label="lab_ifrs-full_StatementOfChangesInEquityTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Statement of changes in equity [table]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_StatementOfChangesInEquityTable" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_StatementOfChangesInEquityTable"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_StatementOfChangesInEquityTable" xlink:to="lab_ifrs-full_StatementOfChangesInEquityTable" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_BasicAndDilutedEarningsLossPerShare_984faa0d-8baa-4b47-a55d-e0d46f6a5d53_terseLabel_es" xlink:label="lab_ifrs-full_BasicAndDilutedEarningsLossPerShare" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Ganancias (pérdidas) por acción básicas y diluidas</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_BasicAndDilutedEarningsLossPerShare" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_BasicAndDilutedEarningsLossPerShare"/>
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    <link:label id="lab_ifrs-full_RepaymentsOfBondsNotesAndDebentures_aad6ea2d-b2b2-4011-a8b0-85736a5d90ce_negatedTerseLabel_es" xlink:label="lab_ifrs-full_RepaymentsOfBondsNotesAndDebentures" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Reembolsos de obligaciones con y sin garantía y pagarés</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_RepaymentsOfBondsNotesAndDebentures" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_RepaymentsOfBondsNotesAndDebentures"/>
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    <link:label id="lab_ifrs-full_Assets_14e8be09-6db2-4339-82f6-1d994475e946_totalLabel_es" xlink:label="lab_ifrs-full_Assets" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Total assets</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_Assets" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_Assets"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_Assets" xlink:to="lab_ifrs-full_Assets" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DisclosureOfRelatedPartyExplanatory_e75d6850-0552-44dc-bdba-1312cac04e36_terseLabel_es" xlink:label="lab_ifrs-full_DisclosureOfRelatedPartyExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Disclosure of related party [text block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfRelatedPartyExplanatory" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_DisclosureOfRelatedPartyExplanatory"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DisclosureOfRelatedPartyExplanatory" xlink:to="lab_ifrs-full_DisclosureOfRelatedPartyExplanatory" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DividendsPaid_7f80164e-6d60-4824-ab89-dc9d4adca09b_negatedTerseLabel_es" xlink:label="lab_ifrs-full_DividendsPaid" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Dividends recognised as distributions to owners</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DividendsPaid" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_DividendsPaid"/>
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    <link:label id="lab_ifrs-full_CashFlowsUsedInObtainingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities_efcea336-33f7-4aa7-a795-6d05177cdf30_negatedTerseLabel_es" xlink:label="lab_ifrs-full_CashFlowsUsedInObtainingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Flujos de efectivo utilizados en la obtención de control de dependientes u otros negocios, clasificados como actividades de inversión</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CashFlowsUsedInObtainingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_CashFlowsUsedInObtainingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities"/>
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    <link:label id="lab_mer_DistributionOfResults_a93144cb-d97c-4db3-8ecf-a28af6281184_terseLabel_es" xlink:label="lab_mer_DistributionOfResults" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Distribution of results</link:label>
    <link:label id="lab_mer_DistributionOfResults_label_es" xlink:label="lab_mer_DistributionOfResults" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Distribution of results</link:label>
    <link:label id="lab_mer_DistributionOfResults_documentation_es" xlink:label="lab_mer_DistributionOfResults" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">The amount of distribution of results</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_mer_DistributionOfResults" xlink:href="959800L8KD863DP30X04-2021-12-31.xsd#mer_DistributionOfResults"/>
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    <link:label id="lab_ifrs-full_DerivativeFinancialAssets_3b3039ca-697f-4b4c-9864-0735be81dbaf_terseLabel_es" xlink:label="lab_ifrs-full_DerivativeFinancialAssets" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Derivative financial assets</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DerivativeFinancialAssets" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_DerivativeFinancialAssets"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DerivativeFinancialAssets" xlink:to="lab_ifrs-full_DerivativeFinancialAssets" xlink:type="arc" order="1"/>
    <link:label id="lab_mer_ProceedsFromSalesOfInvestments_0d545038-5557-4cb6-bbea-378716dc4b6d_totalLabel_es" xlink:label="lab_mer_ProceedsFromSalesOfInvestments" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Proceeds from sales of investments</link:label>
    <link:label id="lab_mer_ProceedsFromSalesOfInvestments_label_es" xlink:label="lab_mer_ProceedsFromSalesOfInvestments" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Proceeds from sales of investments</link:label>
    <link:label id="lab_mer_ProceedsFromSalesOfInvestments_documentation_es" xlink:label="lab_mer_ProceedsFromSalesOfInvestments" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Proceeds from sales of investments</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_mer_ProceedsFromSalesOfInvestments" xlink:href="959800L8KD863DP30X04-2021-12-31.xsd#mer_ProceedsFromSalesOfInvestments"/>
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    <link:label id="lab_ifrs-full_OtherIncome_e2efefc4-5237-43c9-a251-ca08909f642e_terseLabel_es" xlink:label="lab_ifrs-full_OtherIncome" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Other income</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OtherIncome" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_OtherIncome"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_OtherIncome" xlink:to="lab_ifrs-full_OtherIncome" xlink:type="arc" order="1"/>
    <link:label id="lab_mer_IncreaseDecreaseThroughShareBasedPaymentTransactionsStockPlanEquity_f62da85a-e390-4424-acc3-cee67ff35523_terseLabel_es" xlink:label="lab_mer_IncreaseDecreaseThroughShareBasedPaymentTransactionsStockPlanEquity" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Increase (decrease) through share-based payment transactions Stock Plan 2016, equity</link:label>
    <link:label id="lab_mer_IncreaseDecreaseThroughShareBasedPaymentTransactionsStockPlanEquity_label_es" xlink:label="lab_mer_IncreaseDecreaseThroughShareBasedPaymentTransactionsStockPlanEquity" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Increase (decrease) through share-based payment transactions Stock Plan, equity</link:label>
    <link:label id="lab_mer_IncreaseDecreaseThroughShareBasedPaymentTransactionsStockPlanEquity_documentation_es" xlink:label="lab_mer_IncreaseDecreaseThroughShareBasedPaymentTransactionsStockPlanEquity" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">The increase (decrease) in equity resulting from share-based payment transactions. [Refer: Equity]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_mer_IncreaseDecreaseThroughShareBasedPaymentTransactionsStockPlanEquity" xlink:href="959800L8KD863DP30X04-2021-12-31.xsd#mer_IncreaseDecreaseThroughShareBasedPaymentTransactionsStockPlanEquity"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_mer_IncreaseDecreaseThroughShareBasedPaymentTransactionsStockPlanEquity" xlink:to="lab_mer_IncreaseDecreaseThroughShareBasedPaymentTransactionsStockPlanEquity" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_ComponentsOfEquityAxis_90e3dedf-9deb-4adc-b147-3820e4f789cd_terseLabel_es" xlink:label="lab_ifrs-full_ComponentsOfEquityAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Components of equity [axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ComponentsOfEquityAxis" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_ComponentsOfEquityAxis"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_ComponentsOfEquityAxis" xlink:to="lab_ifrs-full_ComponentsOfEquityAxis" xlink:type="arc" order="1"/>
    <link:label id="lab_mer_ProceedsAndPaymentsFromFinancialLiabilities_4de6b782-fbec-4f0b-b2a8-170c3b269f40_totalLabel_es" xlink:label="lab_mer_ProceedsAndPaymentsFromFinancialLiabilities" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Proceeds and payments from financial liabilities</link:label>
    <link:label id="lab_mer_ProceedsAndPaymentsFromFinancialLiabilities_label_es" xlink:label="lab_mer_ProceedsAndPaymentsFromFinancialLiabilities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Proceeds and payments from financial liabilities</link:label>
    <link:label id="lab_mer_ProceedsAndPaymentsFromFinancialLiabilities_documentation_es" xlink:label="lab_mer_ProceedsAndPaymentsFromFinancialLiabilities" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Proceeds and payments from financial liabilities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_mer_ProceedsAndPaymentsFromFinancialLiabilities" xlink:href="959800L8KD863DP30X04-2021-12-31.xsd#mer_ProceedsAndPaymentsFromFinancialLiabilities"/>
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    <link:label id="lab_mer_ProceedsAndPaymentsFromEquityInstruments_30d1d7fe-b06f-4099-ac01-1f4e8bff2a1d_negatedTotalLabel_es" xlink:label="lab_mer_ProceedsAndPaymentsFromEquityInstruments" xlink:role="http://www.xbrl.org/2009/role/negatedTotalLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Proceeds and payments from equity instruments</link:label>
    <link:label id="lab_mer_ProceedsAndPaymentsFromEquityInstruments_label_es" xlink:label="lab_mer_ProceedsAndPaymentsFromEquityInstruments" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Proceeds and payments from equity instruments</link:label>
    <link:label id="lab_mer_ProceedsAndPaymentsFromEquityInstruments_documentation_es" xlink:label="lab_mer_ProceedsAndPaymentsFromEquityInstruments" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Proceeds and payments from equity instruments</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_mer_ProceedsAndPaymentsFromEquityInstruments" xlink:href="959800L8KD863DP30X04-2021-12-31.xsd#mer_ProceedsAndPaymentsFromEquityInstruments"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_mer_ProceedsAndPaymentsFromEquityInstruments" xlink:to="lab_mer_ProceedsAndPaymentsFromEquityInstruments" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_ExplanationOfChangeInNameOfReportingEntityOrOtherMeansOfIdentificationFromEndOfPrecedingReportingPeriod_d31da4a6-04f2-434e-8630-4bbb725ebe4a_terseLabel_es" xlink:label="lab_ifrs-full_ExplanationOfChangeInNameOfReportingEntityOrOtherMeansOfIdentificationFromEndOfPrecedingReportingPeriod" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Explicación del cambio en el nombre de la entidad que informa u otras formas de identificación desde el final del ejercicio sobre el que se informa precedente</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ExplanationOfChangeInNameOfReportingEntityOrOtherMeansOfIdentificationFromEndOfPrecedingReportingPeriod" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_ExplanationOfChangeInNameOfReportingEntityOrOtherMeansOfIdentificationFromEndOfPrecedingReportingPeriod"/>
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    <link:label id="lab_ifrs-full_DisclosureOfAuditorsRemunerationExplanatory_0a34e274-b246-4b05-9294-dbff53bdbb11_terseLabel_es" xlink:label="lab_ifrs-full_DisclosureOfAuditorsRemunerationExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Disclosure of auditors' remuneration [text block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfAuditorsRemunerationExplanatory" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_DisclosureOfAuditorsRemunerationExplanatory"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DisclosureOfAuditorsRemunerationExplanatory" xlink:to="lab_ifrs-full_DisclosureOfAuditorsRemunerationExplanatory" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_IncreaseDecreaseInCashAndCashEquivalents_410cb08d-1c33-4b7d-9586-587e5d183348_negatedTotalLabel_es" xlink:label="lab_ifrs-full_IncreaseDecreaseInCashAndCashEquivalents" xlink:role="http://www.xbrl.org/2009/role/negatedTotalLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Increase (decrease) in cash and cash equivalents</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_IncreaseDecreaseInCashAndCashEquivalents" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_IncreaseDecreaseInCashAndCashEquivalents"/>
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    <link:label id="lab_ifrs-full_InvestmentProperty_60617107-9b95-4ee5-aaed-7de446c1d8b3_terseLabel_es" xlink:label="lab_ifrs-full_InvestmentProperty" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Investment property</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_InvestmentProperty" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_InvestmentProperty"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_InvestmentProperty" xlink:to="lab_ifrs-full_InvestmentProperty" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_NoncurrentPortionOfNoncurrentLoansReceived_d3663e76-a147-41e5-95c8-b69ca78bd75a_terseLabel_es" xlink:label="lab_ifrs-full_NoncurrentPortionOfNoncurrentLoansReceived" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Parte no corriente de préstamos no corrientes recibidos</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NoncurrentPortionOfNoncurrentLoansReceived" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_NoncurrentPortionOfNoncurrentLoansReceived"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_NoncurrentPortionOfNoncurrentLoansReceived" xlink:to="lab_ifrs-full_NoncurrentPortionOfNoncurrentLoansReceived" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_AdjustmentsForLossesGainsOnDisposalOfNoncurrentAssets_7dc4872b-27ca-4c88-adee-33e5ffac38c6_terseLabel_es" xlink:label="lab_ifrs-full_AdjustmentsForLossesGainsOnDisposalOfNoncurrentAssets" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Adjustments for losses (gains) on disposal of non-current assets</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_AdjustmentsForLossesGainsOnDisposalOfNoncurrentAssets" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_AdjustmentsForLossesGainsOnDisposalOfNoncurrentAssets"/>
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    <link:label id="lab_ifrs-full_PurchaseOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities_d7c2eb7e-0c52-4752-82b6-991e9020a26c_negatedTerseLabel_es" xlink:label="lab_ifrs-full_PurchaseOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Purchase of property, plant and equipment, classified as investing activities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_PurchaseOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_PurchaseOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_PurchaseOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities" xlink:to="lab_ifrs-full_PurchaseOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_ComponentsOfOtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossNetOfTaxAbstract_527b2ab5-5c4f-4ced-8bd3-cab32d7035b4_terseLabel_es" xlink:label="lab_ifrs-full_ComponentsOfOtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossNetOfTaxAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Componentes de otro resultado global que se reclasificarán a resultados, netos de impuestos [resumen]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ComponentsOfOtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossNetOfTaxAbstract" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_ComponentsOfOtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossNetOfTaxAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_ComponentsOfOtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossNetOfTaxAbstract" xlink:to="lab_ifrs-full_ComponentsOfOtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossNetOfTaxAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DisclosureOfInformationAboutKeyManagementPersonnelExplanatory_a082151b-7464-4d41-bf6c-268a430de2e6_terseLabel_es" xlink:label="lab_ifrs-full_DisclosureOfInformationAboutKeyManagementPersonnelExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Disclosure of information about key management personnel [text block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfInformationAboutKeyManagementPersonnelExplanatory" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_DisclosureOfInformationAboutKeyManagementPersonnelExplanatory"/>
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    <link:label id="lab_ifrs-full_ReserveOfExchangeDifferencesOnTranslationMember_23b133c4-f117-4afe-a3d0-8884ddec47d4_terseLabel_es" xlink:label="lab_ifrs-full_ReserveOfExchangeDifferencesOnTranslationMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Reserve of exchange differences on translation [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ReserveOfExchangeDifferencesOnTranslationMember" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_ReserveOfExchangeDifferencesOnTranslationMember"/>
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    <link:label id="lab_ifrs-full_DisclosureOfFinancialAssetsExplanatory_97caca85-d4ba-42ca-a000-97cd50899f7a_terseLabel_es" xlink:label="lab_ifrs-full_DisclosureOfFinancialAssetsExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Disclosure of financial assets [text block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfFinancialAssetsExplanatory" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_DisclosureOfFinancialAssetsExplanatory"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DisclosureOfFinancialAssetsExplanatory" xlink:to="lab_ifrs-full_DisclosureOfFinancialAssetsExplanatory" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_AdjustmentsForDepreciationAndAmortisationExpense_3d1da783-048d-4cc0-b9db-57bf487e38e7_terseLabel_es" xlink:label="lab_ifrs-full_AdjustmentsForDepreciationAndAmortisationExpense" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Adjustments for depreciation and amortisation expense</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_AdjustmentsForDepreciationAndAmortisationExpense" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_AdjustmentsForDepreciationAndAmortisationExpense"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_AdjustmentsForDepreciationAndAmortisationExpense" xlink:to="lab_ifrs-full_AdjustmentsForDepreciationAndAmortisationExpense" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_NoncurrentLiabilities_8c01be2b-9288-4512-8c08-2473a7f1a39b_totalLabel_es" xlink:label="lab_ifrs-full_NoncurrentLiabilities" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Total non-current liabilities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NoncurrentLiabilities" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_NoncurrentLiabilities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_NoncurrentLiabilities" xlink:to="lab_ifrs-full_NoncurrentLiabilities" xlink:type="arc" order="1"/>
    <link:label id="lab_mer_AdjustmentsForDecreaseIncreaseInOtherAssetsAndLiabilities_fa0a483b-0252-41eb-8441-4f0433617f76_terseLabel_es" xlink:label="lab_mer_AdjustmentsForDecreaseIncreaseInOtherAssetsAndLiabilities" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Adjustments for decrease increase in other assets and liabilities</link:label>
    <link:label id="lab_mer_AdjustmentsForDecreaseIncreaseInOtherAssetsAndLiabilities_label_es" xlink:label="lab_mer_AdjustmentsForDecreaseIncreaseInOtherAssetsAndLiabilities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Adjustments for decrease increase in other assets and liabilities</link:label>
    <link:label id="lab_mer_AdjustmentsForDecreaseIncreaseInOtherAssetsAndLiabilities_documentation_es" xlink:label="lab_mer_AdjustmentsForDecreaseIncreaseInOtherAssetsAndLiabilities" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Adjustments for decrease (increase) in other assets and liabilities to reconcile profit (loss) to net cash flow from (used in) operating activities.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_mer_AdjustmentsForDecreaseIncreaseInOtherAssetsAndLiabilities" xlink:href="959800L8KD863DP30X04-2021-12-31.xsd#mer_AdjustmentsForDecreaseIncreaseInOtherAssetsAndLiabilities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_mer_AdjustmentsForDecreaseIncreaseInOtherAssetsAndLiabilities" xlink:to="lab_mer_AdjustmentsForDecreaseIncreaseInOtherAssetsAndLiabilities" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_OtherReversalsOfProvisions_a3f95757-366d-4077-9495-3c5f68623ce4_terseLabel_es" xlink:label="lab_ifrs-full_OtherReversalsOfProvisions" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Other reversals of provisions</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OtherReversalsOfProvisions" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_OtherReversalsOfProvisions"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_OtherReversalsOfProvisions" xlink:to="lab_ifrs-full_OtherReversalsOfProvisions" xlink:type="arc" order="1"/>
    <link:label id="lab_mer_InterimDividend_153429e0-23a1-4ba1-8d10-f1d838c33fbe_terseLabel_es" xlink:label="lab_mer_InterimDividend" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Interim dividend</link:label>
    <link:label id="lab_mer_InterimDividend_label_es" xlink:label="lab_mer_InterimDividend" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Interim dividend</link:label>
    <link:label id="lab_mer_InterimDividend_documentation_es" xlink:label="lab_mer_InterimDividend" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">The amount of interim dividend.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_mer_InterimDividend" xlink:href="959800L8KD863DP30X04-2021-12-31.xsd#mer_InterimDividend"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_mer_InterimDividend" xlink:to="lab_mer_InterimDividend" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DisclosureOfNotesAndOtherExplanatoryInformationExplanatory_eecb053d-224d-4e09-befe-93e79655d258_terseLabel_es" xlink:label="lab_ifrs-full_DisclosureOfNotesAndOtherExplanatoryInformationExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Disclosure of notes and other explanatory information [text block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfNotesAndOtherExplanatoryInformationExplanatory" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_DisclosureOfNotesAndOtherExplanatoryInformationExplanatory"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DisclosureOfNotesAndOtherExplanatoryInformationExplanatory" xlink:to="lab_ifrs-full_DisclosureOfNotesAndOtherExplanatoryInformationExplanatory" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_InterestReceivedClassifiedAsOperatingActivities_b81a856f-9f14-4bd7-9b83-914295d6ae45_terseLabel_es" xlink:label="lab_ifrs-full_InterestReceivedClassifiedAsOperatingActivities" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Interest received</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_InterestReceivedClassifiedAsOperatingActivities" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_InterestReceivedClassifiedAsOperatingActivities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_InterestReceivedClassifiedAsOperatingActivities" xlink:to="lab_ifrs-full_InterestReceivedClassifiedAsOperatingActivities" xlink:type="arc" order="1"/>
    <link:label id="lab_mer_PaymentsForInvestments_3a907894-1f82-47a7-b284-9d5bb4b29b49_negatedTotalLabel_es" xlink:label="lab_mer_PaymentsForInvestments" xlink:role="http://www.xbrl.org/2009/role/negatedTotalLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Payments for investments</link:label>
    <link:label id="lab_mer_PaymentsForInvestments_label_es" xlink:label="lab_mer_PaymentsForInvestments" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Payments for investments</link:label>
    <link:label id="lab_mer_PaymentsForInvestments_documentation_es" xlink:label="lab_mer_PaymentsForInvestments" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Payments for investments</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_mer_PaymentsForInvestments" xlink:href="959800L8KD863DP30X04-2021-12-31.xsd#mer_PaymentsForInvestments"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_mer_PaymentsForInvestments" xlink:to="lab_mer_PaymentsForInvestments" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_ProceedsFromBorrowingsClassifiedAsFinancingActivities_342218cf-d976-48cf-8b4b-54a7fb94f47d_negatedTerseLabel_es" xlink:label="lab_ifrs-full_ProceedsFromBorrowingsClassifiedAsFinancingActivities" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Proceeds from borrowings</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ProceedsFromBorrowingsClassifiedAsFinancingActivities" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_ProceedsFromBorrowingsClassifiedAsFinancingActivities"/>
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    <link:label id="lab_mer_DisclosureOfOperatingLeasesTextBlock_71ca8d0d-1b53-45e2-8f0b-c081fabfd66d_terseLabel_es" xlink:label="lab_mer_DisclosureOfOperatingLeasesTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Disclosure of operating leases [Text Block]</link:label>
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    <link:label id="lab_mer_DisclosureOfOperatingLeasesTextBlock_documentation_es" xlink:label="lab_mer_DisclosureOfOperatingLeasesTextBlock" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">The entire disclosure for operating leases.</link:label>
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    <link:label id="lab_ifrs-full_NoncurrentFinancialAssets_dc14b407-0c04-45b4-8516-91cbc5ff187b_terseLabel_es" xlink:label="lab_ifrs-full_NoncurrentFinancialAssets" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Non-current financial assets</link:label>
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    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfGeneralInformationAboutFinancialStatementsExplanatory" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_DisclosureOfGeneralInformationAboutFinancialStatementsExplanatory"/>
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    <link:label id="lab_ifrs-full_SharePremium_4d6c9435-3a20-4b4b-8835-1beab1883cb2_terseLabel_es" xlink:label="lab_ifrs-full_SharePremium" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Share premium</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_SharePremium" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_SharePremium"/>
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    <link:label id="lab_ifrs-full_OtherIntangibleAssets_6ac323f5-80ec-47df-9590-f5e38dcba6fc_terseLabel_es" xlink:label="lab_ifrs-full_OtherIntangibleAssets" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Other intangible assets</link:label>
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    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_OtherIntangibleAssets" xlink:to="lab_ifrs-full_OtherIntangibleAssets" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_ProceedsFromSalesOfInvestmentProperty_0e036bcc-ff56-4006-b6bc-47d94566dde3_negatedTerseLabel_es" xlink:label="lab_ifrs-full_ProceedsFromSalesOfInvestmentProperty" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Proceeds from sales of investment property</link:label>
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    <link:label id="lab_mer_DisclosureOfBasisOfPreparationOfFinancialStatementsAndBasisOfConsolidationTextBlock_documentation_es" xlink:label="lab_mer_DisclosureOfBasisOfPreparationOfFinancialStatementsAndBasisOfConsolidationTextBlock" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">The disclosure of the basis used for the preparation of the financial statements and the disclosure of the basis used for consolidation.</link:label>
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    <link:label id="lab_mer_DisclosureOfTheInformationOnTheEnvironmentTextBlock_6271fae3-c104-48e2-b39f-0c97e6599c3e_terseLabel_es" xlink:label="lab_mer_DisclosureOfTheInformationOnTheEnvironmentTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Disclosure of the information on the environment [Text Block]</link:label>
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    <link:label id="lab_mer_DisclosureOfTheInformationOnTheEnvironmentTextBlock_documentation_es" xlink:label="lab_mer_DisclosureOfTheInformationOnTheEnvironmentTextBlock" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">The disclosure of the information on the environment.</link:label>
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    <link:label id="lab_ifrs-full_SharePremiumMember_8f26b8c9-2f50-4994-a9d5-3f6c2a0305ea_terseLabel_es" xlink:label="lab_ifrs-full_SharePremiumMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Share premium [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_SharePremiumMember" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_SharePremiumMember"/>
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    <link:label id="lab_mer_DisclosureOfEquityTextBlock_c6cad9f2-a391-47c3-86d0-6926f9858c52_terseLabel_es" xlink:label="lab_mer_DisclosureOfEquityTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Disclosure of Equity [Text Block]</link:label>
    <link:label id="lab_mer_DisclosureOfEquityTextBlock_label_es" xlink:label="lab_mer_DisclosureOfEquityTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Disclosure of Equity [Text Block]</link:label>
    <link:label id="lab_mer_DisclosureOfEquityTextBlock_documentation_es" xlink:label="lab_mer_DisclosureOfEquityTextBlock" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">The entire disclosure for share capital, reserves, other equity interest and earnings per share.</link:label>
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    <link:label id="lab_ifrs-full_IssuedCapital_6e895a13-cab7-4899-9ee6-ee9c42e1e432_terseLabel_es" xlink:label="lab_ifrs-full_IssuedCapital" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Issued capital</link:label>
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    <link:label id="lab_ifrs-full_CurrentLiabilities_54af14e9-4192-4c33-8d35-01e5f771ef78_totalLabel_es" xlink:label="lab_ifrs-full_CurrentLiabilities" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Total current liabilities</link:label>
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    <link:label id="lab_ifrs-full_IssuedCapitalMember_98924e87-8d4e-4fbc-b025-3ea1ef55dc21_terseLabel_es" xlink:label="lab_ifrs-full_IssuedCapitalMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Issued capital [member]</link:label>
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    <link:label id="lab_ifrs-full_PrincipalPlaceOfBusiness_5c1006e3-f566-42b5-a4d9-cfac0bd4c688_terseLabel_es" xlink:label="lab_ifrs-full_PrincipalPlaceOfBusiness" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Principal place of business</link:label>
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    <link:label id="lab_mer_ProfitLossAttributableToOwnersOfParentMember_ddb620b5-ae1d-4096-bdbf-dee11bf15915_terseLabel_es" xlink:label="lab_mer_ProfitLossAttributableToOwnersOfParentMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Profit Loss Attributable To Owners Of Parent [Member]</link:label>
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    <link:label id="lab_ifrs-full_TradeAndOtherCurrentPayables_96ac1e72-68e6-4e5c-bbd2-b795abe07152_terseLabel_es" xlink:label="lab_ifrs-full_TradeAndOtherCurrentPayables" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Trade and other current payables</link:label>
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    <link:label id="lab_ifrs-full_OtherCurrentFinancialAssets_85d95ce9-9582-4bd6-8173-3695bac94788_terseLabel_es" xlink:label="lab_ifrs-full_OtherCurrentFinancialAssets" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Other current financial assets</link:label>
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    <link:label id="lab_mer_DisclosureOfPublicEntitiesAndIncomeTaxTextBlock_e9ce9560-37b5-4577-9544-8bcaac3aa2a4_terseLabel_es" xlink:label="lab_mer_DisclosureOfPublicEntitiesAndIncomeTaxTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Disclosure of Public entities and income tax [Text Block]</link:label>
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    <link:label id="lab_ifrs-full_OtherComprehensiveIncomeAbstract_d871f0a0-ba1d-4920-b4ee-a9a58ae9bb85_terseLabel_es" xlink:label="lab_ifrs-full_OtherComprehensiveIncomeAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Other comprehensive income [abstract]</link:label>
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    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_InvestmentAccountedForUsingEquityMethod" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_InvestmentAccountedForUsingEquityMethod"/>
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    <link:label id="lab_mer_ProceedsFromSalesOfFinancialAssets_d6b22799-fa52-4d9c-b321-f9706ad65c63_terseLabel_es" xlink:label="lab_mer_ProceedsFromSalesOfFinancialAssets" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Proceeds from sales of financial assets</link:label>
    <link:label id="lab_mer_ProceedsFromSalesOfFinancialAssets_label_es" xlink:label="lab_mer_ProceedsFromSalesOfFinancialAssets" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Proceeds from sales of financial assets</link:label>
    <link:label id="lab_mer_ProceedsFromSalesOfFinancialAssets_documentation_es" xlink:label="lab_mer_ProceedsFromSalesOfFinancialAssets" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">The cash inflow from sales of financial assets.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_mer_ProceedsFromSalesOfFinancialAssets" xlink:href="959800L8KD863DP30X04-2021-12-31.xsd#mer_ProceedsFromSalesOfFinancialAssets"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_mer_ProceedsFromSalesOfFinancialAssets" xlink:to="lab_mer_ProceedsFromSalesOfFinancialAssets" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_FinanceCosts_c85d8d74-b5c5-41f9-b081-72cb3f6dc008_negatedTerseLabel_es" xlink:label="lab_ifrs-full_FinanceCosts" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Finance costs</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_FinanceCosts" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_FinanceCosts"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_FinanceCosts" xlink:to="lab_ifrs-full_FinanceCosts" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_PropertyPlantAndEquipment_dd2ca5d9-e7b5-4779-a981-6fc4d9b10c5b_terseLabel_es" xlink:label="lab_ifrs-full_PropertyPlantAndEquipment" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Property, plant and equipment</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_PropertyPlantAndEquipment" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_PropertyPlantAndEquipment"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_PropertyPlantAndEquipment" xlink:to="lab_ifrs-full_PropertyPlantAndEquipment" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_CurrentLoansReceivedAndCurrentPortionOfNoncurrentLoansReceived_daae97f8-f39c-432b-affe-125329a7b4f2_terseLabel_es" xlink:label="lab_ifrs-full_CurrentLoansReceivedAndCurrentPortionOfNoncurrentLoansReceived" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Préstamos corrientes recibidos y parte corriente de préstamos no corrientes recibidos.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CurrentLoansReceivedAndCurrentPortionOfNoncurrentLoansReceived" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_CurrentLoansReceivedAndCurrentPortionOfNoncurrentLoansReceived"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_CurrentLoansReceivedAndCurrentPortionOfNoncurrentLoansReceived" xlink:to="lab_ifrs-full_CurrentLoansReceivedAndCurrentPortionOfNoncurrentLoansReceived" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_EquityAttributableToOwnersOfParent_9b9599fb-e823-489e-b897-63020d3e7855_totalLabel_es" xlink:label="lab_ifrs-full_EquityAttributableToOwnersOfParent" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Total equity attributable to owners of parent</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_EquityAttributableToOwnersOfParent" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_EquityAttributableToOwnersOfParent"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_EquityAttributableToOwnersOfParent" xlink:to="lab_ifrs-full_EquityAttributableToOwnersOfParent" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_ComprehensiveIncomeAttributableToOwnersOfParent_ab564f7a-275a-4229-8ca9-90cb58b58841_totalLabel_es" xlink:label="lab_ifrs-full_ComprehensiveIncomeAttributableToOwnersOfParent" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Comprehensive income, attributable to owners of parent</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ComprehensiveIncomeAttributableToOwnersOfParent" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_ComprehensiveIncomeAttributableToOwnersOfParent"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_ComprehensiveIncomeAttributableToOwnersOfParent" xlink:to="lab_ifrs-full_ComprehensiveIncomeAttributableToOwnersOfParent" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_ProfitLossFromOperatingActivities_d918d8a6-fa23-4a1f-a701-68774fec3b5e_totalLabel_es" xlink:label="lab_ifrs-full_ProfitLossFromOperatingActivities" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Profit (loss) from operating activities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ProfitLossFromOperatingActivities" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_ProfitLossFromOperatingActivities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_ProfitLossFromOperatingActivities" xlink:to="lab_ifrs-full_ProfitLossFromOperatingActivities" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DomicileOfEntity_e86c6acd-2de6-44a7-9973-edfcf280cf3f_terseLabel_es" xlink:label="lab_ifrs-full_DomicileOfEntity" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Domicile of entity</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DomicileOfEntity" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_DomicileOfEntity"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DomicileOfEntity" xlink:to="lab_ifrs-full_DomicileOfEntity" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_ComprehensiveIncome_08f1d982-4ba0-4144-8f24-97e82ad11115_totalLabel_es" xlink:label="lab_ifrs-full_ComprehensiveIncome" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Total comprehensive income</link:label>
    <link:label id="lab_ifrs-full_ComprehensiveIncome_c7f22b15-3ffe-4a0c-8575-0798e8f720ea_terseLabel_es" xlink:label="lab_ifrs-full_ComprehensiveIncome" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Comprehensive income</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ComprehensiveIncome" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_ComprehensiveIncome"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_ComprehensiveIncome" xlink:to="lab_ifrs-full_ComprehensiveIncome" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_Equity_eb33703d-56d0-4a11-b4f1-094dcdceea66_totalLabel_es" xlink:label="lab_ifrs-full_Equity" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Total equity</link:label>
    <link:label id="lab_ifrs-full_Equity_6c892911-77a3-4300-be74-b57f3739a927_periodStartLabel_es" xlink:label="lab_ifrs-full_Equity" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Equity at beginning of period</link:label>
    <link:label id="lab_ifrs-full_Equity_ba86f809-f57b-425c-9769-92983977a01b_periodEndLabel_es" xlink:label="lab_ifrs-full_Equity" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Equity at end of period</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_Equity" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_Equity"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_Equity" xlink:to="lab_ifrs-full_Equity" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_EquityAttributableToOwnersOfParentMember_ddb8cdb1-7391-48fb-8950-6f6f073ee4b4_terseLabel_es" xlink:label="lab_ifrs-full_EquityAttributableToOwnersOfParentMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Equity attributable to owners of parent [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_EquityAttributableToOwnersOfParentMember" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_EquityAttributableToOwnersOfParentMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_EquityAttributableToOwnersOfParentMember" xlink:to="lab_ifrs-full_EquityAttributableToOwnersOfParentMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_AdjustmentsForFinanceIncome_c9ffa5ec-a50d-4fb3-8f6c-045fa89b2dcc_negatedTerseLabel_es" xlink:label="lab_ifrs-full_AdjustmentsForFinanceIncome" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Adjustments for finance income</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_AdjustmentsForFinanceIncome" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_AdjustmentsForFinanceIncome"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_AdjustmentsForFinanceIncome" xlink:to="lab_ifrs-full_AdjustmentsForFinanceIncome" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_AdjustmentsForFairValueGainsLosses_9dfb69a3-65d8-4267-b936-2d7a960583f4_terseLabel_es" xlink:label="lab_ifrs-full_AdjustmentsForFairValueGainsLosses" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Adjustments for fair value losses (gains)</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_AdjustmentsForFairValueGainsLosses" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_AdjustmentsForFairValueGainsLosses"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_AdjustmentsForFairValueGainsLosses" xlink:to="lab_ifrs-full_AdjustmentsForFairValueGainsLosses" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_NoncurrentProvisions_c1509162-f3a9-4ac0-8a49-48297911c91b_terseLabel_es" xlink:label="lab_ifrs-full_NoncurrentProvisions" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Non-current provisions</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NoncurrentProvisions" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_NoncurrentProvisions"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_NoncurrentProvisions" xlink:to="lab_ifrs-full_NoncurrentProvisions" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_AdjustmentsForDecreaseIncreaseInTradeAndOtherReceivables_05fca57f-7a3b-4408-b400-0a4bf6c46e02_negatedTerseLabel_es" xlink:label="lab_ifrs-full_AdjustmentsForDecreaseIncreaseInTradeAndOtherReceivables" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Adjustments for decrease (increase) in trade and other receivables</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_AdjustmentsForDecreaseIncreaseInTradeAndOtherReceivables" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_AdjustmentsForDecreaseIncreaseInTradeAndOtherReceivables"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_AdjustmentsForDecreaseIncreaseInTradeAndOtherReceivables" xlink:to="lab_ifrs-full_AdjustmentsForDecreaseIncreaseInTradeAndOtherReceivables" xlink:type="arc" order="1"/>
    <link:label id="lab_mer_SubtotalNonCurrentFinancialAssets_fb875138-f22b-472e-84fd-1597d165d170_totalLabel_es" xlink:label="lab_mer_SubtotalNonCurrentFinancialAssets" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Subtotal activos financieros no corrientes</link:label>
    <link:label id="lab_mer_SubtotalNonCurrentFinancialAssets_label_es" xlink:label="lab_mer_SubtotalNonCurrentFinancialAssets" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Subtotal non current financial assets</link:label>
    <link:label id="lab_mer_SubtotalNonCurrentFinancialAssets_documentation_es" xlink:label="lab_mer_SubtotalNonCurrentFinancialAssets" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Subtotal non current financial assets</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_mer_SubtotalNonCurrentFinancialAssets" xlink:href="959800L8KD863DP30X04-2021-12-31.xsd#mer_SubtotalNonCurrentFinancialAssets"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_mer_SubtotalNonCurrentFinancialAssets" xlink:to="lab_mer_SubtotalNonCurrentFinancialAssets" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_InventoriesTotal_0c21b134-eb67-4a6d-875c-c5a0cb2d0d9d_terseLabel_es" xlink:label="lab_ifrs-full_InventoriesTotal" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Inventories</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_InventoriesTotal" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_InventoriesTotal"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_InventoriesTotal" xlink:to="lab_ifrs-full_InventoriesTotal" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_AddressOfRegisteredOfficeOfEntity_cc4bd3da-66d9-46a0-b282-efd159e489a6_terseLabel_es" xlink:label="lab_ifrs-full_AddressOfRegisteredOfficeOfEntity" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Address of entity's registered office</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_AddressOfRegisteredOfficeOfEntity" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_AddressOfRegisteredOfficeOfEntity"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_AddressOfRegisteredOfficeOfEntity" xlink:to="lab_ifrs-full_AddressOfRegisteredOfficeOfEntity" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_ProvisionUsedOtherProvisions_3a40d9a9-4cfb-4717-a11a-13a0d8ba6b58_negatedLabel_es" xlink:label="lab_ifrs-full_ProvisionUsedOtherProvisions" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Nuevas provisiones, otras provisiones</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ProvisionUsedOtherProvisions" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_ProvisionUsedOtherProvisions"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_ProvisionUsedOtherProvisions" xlink:to="lab_ifrs-full_ProvisionUsedOtherProvisions" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_LegalFormOfEntity_4cd16909-0ea0-42d3-ae6a-3f864873f678_terseLabel_es" xlink:label="lab_ifrs-full_LegalFormOfEntity" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Legal form of entity</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_LegalFormOfEntity" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_LegalFormOfEntity"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_LegalFormOfEntity" xlink:to="lab_ifrs-full_LegalFormOfEntity" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_AdjustmentsForReconcileProfitLoss_caa6a4d8-2e2e-4673-af12-bcbf251bc718_totalLabel_es" xlink:label="lab_ifrs-full_AdjustmentsForReconcileProfitLoss" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Total adjustments to reconcile profit (loss)</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_AdjustmentsForReconcileProfitLoss" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_AdjustmentsForReconcileProfitLoss"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_AdjustmentsForReconcileProfitLoss" xlink:to="lab_ifrs-full_AdjustmentsForReconcileProfitLoss" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_EquityAbstract_f987ed0f-c7ec-4409-a5ad-2fe61056f8c6_terseLabel_es" xlink:label="lab_ifrs-full_EquityAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Equity [abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_EquityAbstract" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_EquityAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_EquityAbstract" xlink:to="lab_ifrs-full_EquityAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_NoncurrentAssetsAbstract_e16f7276-03b0-4911-8fc9-042d700437f4_terseLabel_es" xlink:label="lab_ifrs-full_NoncurrentAssetsAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Non-current assets [abstract]</link:label>
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    <link:label id="lab_ifrs-full_DisclosureOfEventsAfterReportingPeriodExplanatory_5ffdbdb2-3d6b-44d2-bc4b-14de21ed0792_terseLabel_es" xlink:label="lab_ifrs-full_DisclosureOfEventsAfterReportingPeriodExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Disclosure of events after reporting period [text block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfEventsAfterReportingPeriodExplanatory" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_DisclosureOfEventsAfterReportingPeriodExplanatory"/>
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    <link:label id="lab_ifrs-full_AdjustmentsForDecreaseIncreaseInInventories_b6bad527-e0e4-458f-bcac-eb4dcdb714e4_negatedTerseLabel_es" xlink:label="lab_ifrs-full_AdjustmentsForDecreaseIncreaseInInventories" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Adjustments for decrease (increase) in inventories</link:label>
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    <link:label id="lab_ifrs-full_NameOfReportingEntityOrOtherMeansOfIdentification_cf0c1998-5e66-44c7-a4b1-c8750ecff3de_terseLabel_es" xlink:label="lab_ifrs-full_NameOfReportingEntityOrOtherMeansOfIdentification" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Name of reporting entity or other means of identification</link:label>
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    <link:label id="lab_ifrs-full_DisclosureOfFinancialRiskManagementExplanatory_bfbfde0f-b289-4d9a-85c7-d49106e00993_terseLabel_es" xlink:label="lab_ifrs-full_DisclosureOfFinancialRiskManagementExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Disclosure of financial risk management [text block]</link:label>
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    <link:label id="lab_ifrs-full_NameOfParentEntity_f42d5790-d20a-4dbf-97f3-98be7f294ab7_terseLabel_es" xlink:label="lab_ifrs-full_NameOfParentEntity" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Name of parent entity</link:label>
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    <link:label id="lab_ifrs-full_CashFlowsFromUsedInInvestingActivities_1c53cf3b-f74e-4ddf-af81-f59bfe12e474_negatedTotalLabel_es" xlink:label="lab_ifrs-full_CashFlowsFromUsedInInvestingActivities" xlink:role="http://www.xbrl.org/2009/role/negatedTotalLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Cash flows from (used in) investing activities</link:label>
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    <link:label id="lab_ifrs-full_DilutedEarningsLossPerShare_3998bce3-2ceb-4668-9fac-5e52e8c5bf7b_terseLabel_es" xlink:label="lab_ifrs-full_DilutedEarningsLossPerShare" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Ganancias (pérdidas) por acción diluidas</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DilutedEarningsLossPerShare" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_DilutedEarningsLossPerShare"/>
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    <link:label id="lab_ifrs-full_Revenue_6a8a1e06-5e35-427b-841f-ec9fd9e82511_terseLabel_es" xlink:label="lab_ifrs-full_Revenue" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Revenue</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_Revenue" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_Revenue"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_Revenue" xlink:to="lab_ifrs-full_Revenue" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_CurrentLiabilitiesAbstract_62e94225-1f04-4d25-b2bd-a583fbc337c6_terseLabel_es" xlink:label="lab_ifrs-full_CurrentLiabilitiesAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Current liabilities [abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CurrentLiabilitiesAbstract" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_CurrentLiabilitiesAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_CurrentLiabilitiesAbstract" xlink:to="lab_ifrs-full_CurrentLiabilitiesAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_NameOfUltimateParentOfGroup_9571ab70-458f-4cea-90f7-a38e1029c6cf_terseLabel_es" xlink:label="lab_ifrs-full_NameOfUltimateParentOfGroup" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Nombre de la dominante última del grupo</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NameOfUltimateParentOfGroup" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_NameOfUltimateParentOfGroup"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_NameOfUltimateParentOfGroup" xlink:to="lab_ifrs-full_NameOfUltimateParentOfGroup" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DisclosureOfInvestmentPropertyExplanatory_2a93753c-4106-43dd-a789-323a9482f847_terseLabel_es" xlink:label="lab_ifrs-full_DisclosureOfInvestmentPropertyExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Disclosure of investment property [text block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfInvestmentPropertyExplanatory" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_DisclosureOfInvestmentPropertyExplanatory"/>
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    <link:label id="lab_ifrs-full_EquityMember_4e26f21d-32ff-4426-94af-3d9537a022d0_terseLabel_es" xlink:label="lab_ifrs-full_EquityMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Equity [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_EquityMember" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_EquityMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_EquityMember" xlink:to="lab_ifrs-full_EquityMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_GainsLossesOnDisposalsOfInvestments_28885e29-0ee8-4450-aef3-d46c7b130384_terseLabel_es" xlink:label="lab_ifrs-full_GainsLossesOnDisposalsOfInvestments" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Gains (losses) on disposals of investments</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_GainsLossesOnDisposalsOfInvestments" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_GainsLossesOnDisposalsOfInvestments"/>
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    <link:label id="lab_ifrs-full_ProfitLossBeforeTax_875d86c3-b7dd-4edc-9c25-0a8ca3614c37_totalLabel_es" xlink:label="lab_ifrs-full_ProfitLossBeforeTax" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Profit (loss) before tax</link:label>
    <link:label id="lab_ifrs-full_ProfitLossBeforeTax_bca7d384-175f-40be-aad8-55fc8e6b4e7c_terseLabel_es" xlink:label="lab_ifrs-full_ProfitLossBeforeTax" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Profit (loss) before tax</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ProfitLossBeforeTax" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_ProfitLossBeforeTax"/>
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    <link:label id="lab_ifrs-full_AdjustmentsForGainsLossesOnFairValueAdjustmentInvestmentProperty_03769c26-d024-43c9-ac16-ba0238751213_negatedTerseLabel_es" xlink:label="lab_ifrs-full_AdjustmentsForGainsLossesOnFairValueAdjustmentInvestmentProperty" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Adjustments for gains (losses) on fair value adjustment, investment property</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_AdjustmentsForGainsLossesOnFairValueAdjustmentInvestmentProperty" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_AdjustmentsForGainsLossesOnFairValueAdjustmentInvestmentProperty"/>
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    <link:label id="lab_ifrs-full_CurrentAssets_8c54c070-43ed-4916-9077-859e29a5c95d_totalLabel_es" xlink:label="lab_ifrs-full_CurrentAssets" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Total current assets</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CurrentAssets" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_CurrentAssets"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_CurrentAssets" xlink:to="lab_ifrs-full_CurrentAssets" xlink:type="arc" order="1"/>
    <link:label id="lab_mer_DisclosureOfRevenueAndExpensesTextBlock_768d3556-f6d4-46bf-a01d-ebc88414640c_terseLabel_es" xlink:label="lab_mer_DisclosureOfRevenueAndExpensesTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Disclosure of revenue and expenses [Text Block]</link:label>
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    <link:label id="lab_mer_DisclosureOfRevenueAndExpensesTextBlock_documentation_es" xlink:label="lab_mer_DisclosureOfRevenueAndExpensesTextBlock" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">The entire disclosure for revenue and expenses.</link:label>
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    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_mer_DisclosureOfRevenueAndExpensesTextBlock" xlink:to="lab_mer_DisclosureOfRevenueAndExpensesTextBlock" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_ProfitLoss_4913184d-dd32-436c-9c6a-ecc0309e589a_totalLabel_es" xlink:label="lab_ifrs-full_ProfitLoss" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Profit (loss)</link:label>
    <link:label id="lab_ifrs-full_ProfitLoss_c5c1e6d6-50ce-4189-9e5c-c44f1069ca37_terseLabel_es" xlink:label="lab_ifrs-full_ProfitLoss" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Ganancia (pérdida)</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ProfitLoss" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_ProfitLoss"/>
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    <link:label id="lab_ifrs-full_DividendsPaidClassifiedAsFinancingActivities_cd8ed73d-67bb-43fc-afe9-23fc9c30017e_negatedTerseLabel_es" xlink:label="lab_ifrs-full_DividendsPaidClassifiedAsFinancingActivities" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Dividends paid, classified as financing activities</link:label>
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    <link:label id="lab_mer_OtherEquityInstruments_b5475b1f-6382-40ac-b26d-3e1e69f082d9_negatedLabel_es" xlink:label="lab_mer_OtherEquityInstruments" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Other Equity Instruments</link:label>
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    <link:label id="lab_mer_OtherEquityInstruments_documentation_es" xlink:label="lab_mer_OtherEquityInstruments" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Other Equity Instruments</link:label>
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    <link:label id="lab_ifrs-full_ShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethod_2aabc7dd-87c2-4751-99dc-ee0c8d5ec5d5_terseLabel_es" xlink:label="lab_ifrs-full_ShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethod" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Share of profit (loss) of associates and joint ventures accounted for using equity method</link:label>
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    <link:label id="lab_ifrs-full_CurrentPrepaymentsAndOtherCurrentAssets_4d3900ed-86de-4800-8331-3857cd79ad67_terseLabel_es" xlink:label="lab_ifrs-full_CurrentPrepaymentsAndOtherCurrentAssets" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Other current assets</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CurrentPrepaymentsAndOtherCurrentAssets" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_CurrentPrepaymentsAndOtherCurrentAssets"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_CurrentPrepaymentsAndOtherCurrentAssets" xlink:to="lab_ifrs-full_CurrentPrepaymentsAndOtherCurrentAssets" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_StatementOfChangesInEquityLineItems_64716c56-cdce-4897-a9db-3ad3cc026e8c_terseLabel_es" xlink:label="lab_ifrs-full_StatementOfChangesInEquityLineItems" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Statement of changes in equity [line items]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_StatementOfChangesInEquityLineItems" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_StatementOfChangesInEquityLineItems"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_StatementOfChangesInEquityLineItems" xlink:to="lab_ifrs-full_StatementOfChangesInEquityLineItems" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_OtherExpenseByNature_1f5f6e2b-0a8c-4214-8b02-72c1554e71f2_negatedTerseLabel_es" xlink:label="lab_ifrs-full_OtherExpenseByNature" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Other expenses</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OtherExpenseByNature" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_OtherExpenseByNature"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_OtherExpenseByNature" xlink:to="lab_ifrs-full_OtherExpenseByNature" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_OtherAdjustmentsToReconcileProfitLoss_2523c760-599a-4ac8-8d4d-eb8db1a7369d_terseLabel_es" xlink:label="lab_ifrs-full_OtherAdjustmentsToReconcileProfitLoss" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Otros ajustes para conciliar la ganancia (pérdida)</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OtherAdjustmentsToReconcileProfitLoss" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_OtherAdjustmentsToReconcileProfitLoss"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_OtherAdjustmentsToReconcileProfitLoss" xlink:to="lab_ifrs-full_OtherAdjustmentsToReconcileProfitLoss" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_AdjustmentsForDecreaseIncreaseInOtherCurrentAssets_a0e0ab14-4633-4822-9b61-82340df58af8_negatedTerseLabel_es" xlink:label="lab_ifrs-full_AdjustmentsForDecreaseIncreaseInOtherCurrentAssets" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Adjustments for decrease (increase) in other current assets</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_AdjustmentsForDecreaseIncreaseInOtherCurrentAssets" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_AdjustmentsForDecreaseIncreaseInOtherCurrentAssets"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_AdjustmentsForDecreaseIncreaseInOtherCurrentAssets" xlink:to="lab_ifrs-full_AdjustmentsForDecreaseIncreaseInOtherCurrentAssets" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_CurrentBondsIssuedAndCurrentPortionOfNoncurrentBondsIssued_5e272fdd-1f27-4e2e-98e3-95cebe80b0ba_terseLabel_es" xlink:label="lab_ifrs-full_CurrentBondsIssuedAndCurrentPortionOfNoncurrentBondsIssued" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Bonos corrientes emitidos y parte corriente de bonos no corrientes emitidos</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CurrentBondsIssuedAndCurrentPortionOfNoncurrentBondsIssued" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_CurrentBondsIssuedAndCurrentPortionOfNoncurrentBondsIssued"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_CurrentBondsIssuedAndCurrentPortionOfNoncurrentBondsIssued" xlink:to="lab_ifrs-full_CurrentBondsIssuedAndCurrentPortionOfNoncurrentBondsIssued" xlink:type="arc" order="1"/>
    <link:label id="lab_mer_ChangeInFairValueOfOtherFinancialInstruments_8bb84a9a-2ced-461d-a949-58c2bf6a4d87_terseLabel_es" xlink:label="lab_mer_ChangeInFairValueOfOtherFinancialInstruments" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Change in fair value of other financial instruments</link:label>
    <link:label id="lab_mer_ChangeInFairValueOfOtherFinancialInstruments_label_es" xlink:label="lab_mer_ChangeInFairValueOfOtherFinancialInstruments" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Change in fair value of other financial instruments</link:label>
    <link:label id="lab_mer_ChangeInFairValueOfOtherFinancialInstruments_documentation_es" xlink:label="lab_mer_ChangeInFairValueOfOtherFinancialInstruments" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Change in fair value of other financial instruments</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_mer_ChangeInFairValueOfOtherFinancialInstruments" xlink:href="959800L8KD863DP30X04-2021-12-31.xsd#mer_ChangeInFairValueOfOtherFinancialInstruments"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_mer_ChangeInFairValueOfOtherFinancialInstruments" xlink:to="lab_mer_ChangeInFairValueOfOtherFinancialInstruments" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_NoncurrentPortionOfNoncurrentBondsIssued_ad4512a2-87bf-4126-a7b9-dc0953ed3eaf_terseLabel_es" xlink:label="lab_ifrs-full_NoncurrentPortionOfNoncurrentBondsIssued" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Parte no corriente de bonos emitidos no corrientes</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NoncurrentPortionOfNoncurrentBondsIssued" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_NoncurrentPortionOfNoncurrentBondsIssued"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_NoncurrentPortionOfNoncurrentBondsIssued" xlink:to="lab_ifrs-full_NoncurrentPortionOfNoncurrentBondsIssued" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_AdjustmentsForProvisions_3ef6649d-4e93-4628-bede-f28b2117351a_terseLabel_es" xlink:label="lab_ifrs-full_AdjustmentsForProvisions" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Adjustments for provisions</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_AdjustmentsForProvisions" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_AdjustmentsForProvisions"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_AdjustmentsForProvisions" xlink:to="lab_ifrs-full_AdjustmentsForProvisions" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DisclosureOfEntitysReportableSegmentsExplanatory_fe0f6b8b-6adb-40e2-b486-ffca7fd2e9b3_terseLabel_es" xlink:label="lab_ifrs-full_DisclosureOfEntitysReportableSegmentsExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Disclosure of entity's operating segments [text block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfEntitysReportableSegmentsExplanatory" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_DisclosureOfEntitysReportableSegmentsExplanatory"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DisclosureOfEntitysReportableSegmentsExplanatory" xlink:to="lab_ifrs-full_DisclosureOfEntitysReportableSegmentsExplanatory" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_CashFlowsFromUsedInFinancingActivities_d8142017-ee30-43f8-8c80-5a56e0ec9c2f_negatedTotalLabel_es" xlink:label="lab_ifrs-full_CashFlowsFromUsedInFinancingActivities" xlink:role="http://www.xbrl.org/2009/role/negatedTotalLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Cash flows from (used in) financing activities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CashFlowsFromUsedInFinancingActivities" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_CashFlowsFromUsedInFinancingActivities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_CashFlowsFromUsedInFinancingActivities" xlink:to="lab_ifrs-full_CashFlowsFromUsedInFinancingActivities" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DepreciationAndAmortisationExpense_adc11ab8-413b-4574-b692-d1ed9b5ae1b0_negatedTerseLabel_es" xlink:label="lab_ifrs-full_DepreciationAndAmortisationExpense" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Depreciation and amortisation expense</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DepreciationAndAmortisationExpense" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_DepreciationAndAmortisationExpense"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DepreciationAndAmortisationExpense" xlink:to="lab_ifrs-full_DepreciationAndAmortisationExpense" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_CashAndCashEquivalents_9a09d0b0-fb0e-4859-8976-beb5e2cd7f55_terseLabel_es" xlink:label="lab_ifrs-full_CashAndCashEquivalents" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Efectivo y equivalentes al efectivo</link:label>
    <link:label id="lab_ifrs-full_CashAndCashEquivalents_67cc01b2-6f96-47af-95ee-92d050b57325_periodStartLabel_es" xlink:label="lab_ifrs-full_CashAndCashEquivalents" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Cash and cash equivalents Period Start</link:label>
    <link:label id="lab_ifrs-full_CashAndCashEquivalents_4894052c-7d0d-4058-acd6-b308da26a0a1_periodEndLabel_es" xlink:label="lab_ifrs-full_CashAndCashEquivalents" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Cash and cash equivalents Period End</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CashAndCashEquivalents" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_CashAndCashEquivalents"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_CashAndCashEquivalents" xlink:to="lab_ifrs-full_CashAndCashEquivalents" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_PaymentsToAcquireOrRedeemEntitysShares_c7353a16-176c-482f-9414-912825452722_negatedTerseLabel_es" xlink:label="lab_ifrs-full_PaymentsToAcquireOrRedeemEntitysShares" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Payments to acquire or redeem entity's shares</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_PaymentsToAcquireOrRedeemEntitysShares" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_PaymentsToAcquireOrRedeemEntitysShares"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_PaymentsToAcquireOrRedeemEntitysShares" xlink:to="lab_ifrs-full_PaymentsToAcquireOrRedeemEntitysShares" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_OtherNoncurrentFinancialLiabilities_f83e14a9-b075-4559-8171-ea24e96aabbf_terseLabel_es" xlink:label="lab_ifrs-full_OtherNoncurrentFinancialLiabilities" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Other non-current financial liabilities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OtherNoncurrentFinancialLiabilities" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_OtherNoncurrentFinancialLiabilities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_OtherNoncurrentFinancialLiabilities" xlink:to="lab_ifrs-full_OtherNoncurrentFinancialLiabilities" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_ProceedsFromIssueOfBondsNotesAndDebentures_3c994d9e-4728-42de-9819-61a31e91694d_terseLabel_es" xlink:label="lab_ifrs-full_ProceedsFromIssueOfBondsNotesAndDebentures" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Cobros procedentes de la emisión de obligaciones con y sin garantía y pagarés</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ProceedsFromIssueOfBondsNotesAndDebentures" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_ProceedsFromIssueOfBondsNotesAndDebentures"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_ProceedsFromIssueOfBondsNotesAndDebentures" xlink:to="lab_ifrs-full_ProceedsFromIssueOfBondsNotesAndDebentures" xlink:type="arc" order="1"/>
    <link:label id="lab_mer_ProfitLossAttributableToOwnersOfTheParent_611d34b5-7fa4-4024-a60d-fbcddff5aad5_terseLabel_es" xlink:label="lab_mer_ProfitLossAttributableToOwnersOfTheParent" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Profit (loss) attributable to owners of the parent</link:label>
    <link:label id="lab_mer_ProfitLossAttributableToOwnersOfTheParent_label_es" xlink:label="lab_mer_ProfitLossAttributableToOwnersOfTheParent" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Profit (loss) attributable to owners of the parent</link:label>
    <link:label id="lab_mer_ProfitLossAttributableToOwnersOfTheParent_documentation_es" xlink:label="lab_mer_ProfitLossAttributableToOwnersOfTheParent" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Profit (loss) attributable to owners of the parent</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_mer_ProfitLossAttributableToOwnersOfTheParent" xlink:href="959800L8KD863DP30X04-2021-12-31.xsd#mer_ProfitLossAttributableToOwnersOfTheParent"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_mer_ProfitLossAttributableToOwnersOfTheParent" xlink:to="lab_mer_ProfitLossAttributableToOwnersOfTheParent" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_PurchaseOfInvestmentProperty_a482dd34-4f92-4444-8ab4-2f79730b289b_negatedTerseLabel_es" xlink:label="lab_ifrs-full_PurchaseOfInvestmentProperty" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Purchase of investment property</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_PurchaseOfInvestmentProperty" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_PurchaseOfInvestmentProperty"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_PurchaseOfInvestmentProperty" xlink:to="lab_ifrs-full_PurchaseOfInvestmentProperty" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_CurrentTaxLiabilities_92c683aa-681c-4160-99d8-d8575779658a_terseLabel_es" xlink:label="lab_ifrs-full_CurrentTaxLiabilities" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Current tax liabilities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CurrentTaxLiabilities" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_CurrentTaxLiabilities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_CurrentTaxLiabilities" xlink:to="lab_ifrs-full_CurrentTaxLiabilities" xlink:type="arc" order="1"/>
    <link:label id="lab_mer_OtherEquityHolderContributions_6f0db970-3ef0-4948-91d8-47c07512564b_terseLabel_es" xlink:label="lab_mer_OtherEquityHolderContributions" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Other equity holder contributions</link:label>
    <link:label id="lab_mer_OtherEquityHolderContributions_label_es" xlink:label="lab_mer_OtherEquityHolderContributions" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Other equity holder contributions</link:label>
    <link:label id="lab_mer_OtherEquityHolderContributions_documentation_es" xlink:label="lab_mer_OtherEquityHolderContributions" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Other equity holder contributions</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_mer_OtherEquityHolderContributions" xlink:href="959800L8KD863DP30X04-2021-12-31.xsd#mer_OtherEquityHolderContributions"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_mer_OtherEquityHolderContributions" xlink:to="lab_mer_OtherEquityHolderContributions" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_FinanceIncome_7b152df9-6ca6-480b-a275-58a5d64bab89_terseLabel_es" xlink:label="lab_ifrs-full_FinanceIncome" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Finance income</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_FinanceIncome" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_FinanceIncome"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_FinanceIncome" xlink:to="lab_ifrs-full_FinanceIncome" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_TreasuryShares_81483477-c137-432c-9631-02aa8708e7b4_negatedTerseLabel_es" xlink:label="lab_ifrs-full_TreasuryShares" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Treasury shares</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_TreasuryShares" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_TreasuryShares"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_TreasuryShares" xlink:to="lab_ifrs-full_TreasuryShares" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DescriptionOfNatureOfEntitysOperationsAndPrincipalActivities_392a0f0e-a7ec-4298-bdd2-10afa7a91f81_terseLabel_es" xlink:label="lab_ifrs-full_DescriptionOfNatureOfEntitysOperationsAndPrincipalActivities" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Description of nature of entity's operations and principal activities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DescriptionOfNatureOfEntitysOperationsAndPrincipalActivities" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_DescriptionOfNatureOfEntitysOperationsAndPrincipalActivities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DescriptionOfNatureOfEntitysOperationsAndPrincipalActivities" xlink:to="lab_ifrs-full_DescriptionOfNatureOfEntitysOperationsAndPrincipalActivities" xlink:type="arc" order="1"/>
    <link:label id="lab_mer_InterimDividendMember_b24b6227-c59d-48e3-b849-ab23d38f3f47_terseLabel_es" xlink:label="lab_mer_InterimDividendMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Interim dividend [Member]</link:label>
    <link:label id="lab_mer_InterimDividendMember_label_es" xlink:label="lab_mer_InterimDividendMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Interim dividend [Member]</link:label>
    <link:label id="lab_mer_InterimDividendMember_documentation_es" xlink:label="lab_mer_InterimDividendMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">This member stands for the interim dividends.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_mer_InterimDividendMember" xlink:href="959800L8KD863DP30X04-2021-12-31.xsd#mer_InterimDividendMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_mer_InterimDividendMember" xlink:to="lab_mer_InterimDividendMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DisclosureOfTradeAndOtherPayablesExplanatory_471591a0-bd95-40a5-9ea1-950704d114da_terseLabel_es" xlink:label="lab_ifrs-full_DisclosureOfTradeAndOtherPayablesExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Disclosure of trade and other payables [text block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfTradeAndOtherPayablesExplanatory" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_DisclosureOfTradeAndOtherPayablesExplanatory"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DisclosureOfTradeAndOtherPayablesExplanatory" xlink:to="lab_ifrs-full_DisclosureOfTradeAndOtherPayablesExplanatory" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_ProfitLossAttributableToOwnersOfParent_7aceec7b-e9ff-40cc-b323-af2da01a17d1_totalLabel_es" xlink:label="lab_ifrs-full_ProfitLossAttributableToOwnersOfParent" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Profit (loss), attributable to owners of parent</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ProfitLossAttributableToOwnersOfParent" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_ProfitLossAttributableToOwnersOfParent"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_ProfitLossAttributableToOwnersOfParent" xlink:to="lab_ifrs-full_ProfitLossAttributableToOwnersOfParent" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DisclosureOfTradeAndOtherReceivablesExplanatory_e89bbb5d-a096-41ef-80e5-93d363710e23_terseLabel_es" xlink:label="lab_ifrs-full_DisclosureOfTradeAndOtherReceivablesExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Disclosure of trade and other receivables [text block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfTradeAndOtherReceivablesExplanatory" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_DisclosureOfTradeAndOtherReceivablesExplanatory"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DisclosureOfTradeAndOtherReceivablesExplanatory" xlink:to="lab_ifrs-full_DisclosureOfTradeAndOtherReceivablesExplanatory" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_TreasurySharesMember_b32e5be2-d19f-4323-bdbc-04fa34efb152_terseLabel_es" xlink:label="lab_ifrs-full_TreasurySharesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Treasury shares [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_TreasurySharesMember" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_TreasurySharesMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_TreasurySharesMember" xlink:to="lab_ifrs-full_TreasurySharesMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DisclosureOfOtherLiabilitiesExplanatory_5e864633-e569-415e-97ac-95b988e620eb_terseLabel_es" xlink:label="lab_ifrs-full_DisclosureOfOtherLiabilitiesExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Disclosure of other liabilities [text block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfOtherLiabilitiesExplanatory" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_DisclosureOfOtherLiabilitiesExplanatory"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DisclosureOfOtherLiabilitiesExplanatory" xlink:to="lab_ifrs-full_DisclosureOfOtherLiabilitiesExplanatory" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_RepaymentsOfBorrowingsClassifiedAsFinancingActivities_e22e471d-cc93-44fe-9f11-e4cc1ea3102b_negatedTerseLabel_es" xlink:label="lab_ifrs-full_RepaymentsOfBorrowingsClassifiedAsFinancingActivities" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Repayments of borrowings, classified as financing activities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_RepaymentsOfBorrowingsClassifiedAsFinancingActivities" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_RepaymentsOfBorrowingsClassifiedAsFinancingActivities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_RepaymentsOfBorrowingsClassifiedAsFinancingActivities" xlink:to="lab_ifrs-full_RepaymentsOfBorrowingsClassifiedAsFinancingActivities" xlink:type="arc" order="1"/>
    <link:label id="lab_mer_OtherEquityHolderContributionsMember_dfddd653-797f-4d27-82f9-bd93136199b1_terseLabel_es" xlink:label="lab_mer_OtherEquityHolderContributionsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Other equity holder contributions [Member]</link:label>
    <link:label id="lab_mer_OtherEquityHolderContributionsMember_label_es" xlink:label="lab_mer_OtherEquityHolderContributionsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Other equity holder contributions [Member]</link:label>
    <link:label id="lab_mer_OtherEquityHolderContributionsMember_documentation_es" xlink:label="lab_mer_OtherEquityHolderContributionsMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Other equity holder contributions</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_mer_OtherEquityHolderContributionsMember" xlink:href="959800L8KD863DP30X04-2021-12-31.xsd#mer_OtherEquityHolderContributionsMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_mer_OtherEquityHolderContributionsMember" xlink:to="lab_mer_OtherEquityHolderContributionsMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_CashFlowsFromUsedInOperations_2d7fb07b-9ff3-4355-a388-474d3964ee2b_negatedTotalLabel_es" xlink:label="lab_ifrs-full_CashFlowsFromUsedInOperations" xlink:role="http://www.xbrl.org/2009/role/negatedTotalLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Cash flows from (used in) operations</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CashFlowsFromUsedInOperations" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_CashFlowsFromUsedInOperations"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_CashFlowsFromUsedInOperations" xlink:to="lab_ifrs-full_CashFlowsFromUsedInOperations" xlink:type="arc" order="1"/>
    <link:label id="lab_mer_DisclosureOfChangesInConsolidationPerimeterTextBlock_9299769e-cc49-4852-8627-9f120118a765_terseLabel_es" xlink:label="lab_mer_DisclosureOfChangesInConsolidationPerimeterTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Disclosure of changes in consolidation perimeter [Text Block]</link:label>
    <link:label id="lab_mer_DisclosureOfChangesInConsolidationPerimeterTextBlock_label_es" xlink:label="lab_mer_DisclosureOfChangesInConsolidationPerimeterTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Disclosure of changes in consolidation perimeter [Text Block]</link:label>
    <link:label id="lab_mer_DisclosureOfChangesInConsolidationPerimeterTextBlock_documentation_es" xlink:label="lab_mer_DisclosureOfChangesInConsolidationPerimeterTextBlock" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">The disclosure of the changes in the consolidation perimeter.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_mer_DisclosureOfChangesInConsolidationPerimeterTextBlock" xlink:href="959800L8KD863DP30X04-2021-12-31.xsd#mer_DisclosureOfChangesInConsolidationPerimeterTextBlock"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_mer_DisclosureOfChangesInConsolidationPerimeterTextBlock" xlink:to="lab_mer_DisclosureOfChangesInConsolidationPerimeterTextBlock" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_ReserveOfCashFlowHedges_1b16fcc7-136b-43c2-b4ca-aeeaf7710da9_terseLabel_es" xlink:label="lab_ifrs-full_ReserveOfCashFlowHedges" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Reserva de cobertura de flujos de efectivo</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ReserveOfCashFlowHedges" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_ReserveOfCashFlowHedges"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_ReserveOfCashFlowHedges" xlink:to="lab_ifrs-full_ReserveOfCashFlowHedges" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_TradeAndOtherCurrentReceivables_e9896f5c-a165-4abb-9b22-7080b57a7e14_terseLabel_es" xlink:label="lab_ifrs-full_TradeAndOtherCurrentReceivables" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Trade and other current receivables</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_TradeAndOtherCurrentReceivables" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_TradeAndOtherCurrentReceivables"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_TradeAndOtherCurrentReceivables" xlink:to="lab_ifrs-full_TradeAndOtherCurrentReceivables" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_CashFlowsFromUsedInOperatingActivities_8e954487-9e0b-47a3-b390-1d6b4898c2e3_totalLabel_es" xlink:label="lab_ifrs-full_CashFlowsFromUsedInOperatingActivities" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Cash flows from (used in) operating activities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CashFlowsFromUsedInOperatingActivities" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_CashFlowsFromUsedInOperatingActivities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_CashFlowsFromUsedInOperatingActivities" xlink:to="lab_ifrs-full_CashFlowsFromUsedInOperatingActivities" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_ReserveOfCashFlowHedgesMember_665acf1c-fb3a-4bd8-a5d7-38186407d4e4_terseLabel_es" xlink:label="lab_ifrs-full_ReserveOfCashFlowHedgesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Reserva de cobertura de flujos de efectivo [miembro]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ReserveOfCashFlowHedgesMember" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_ReserveOfCashFlowHedgesMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_ReserveOfCashFlowHedgesMember" xlink:to="lab_ifrs-full_ReserveOfCashFlowHedgesMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_CurrentAssetsAbstract_9e8b8e99-9e80-4422-907e-58ba19766bb1_terseLabel_es" xlink:label="lab_ifrs-full_CurrentAssetsAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Current assets [abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CurrentAssetsAbstract" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_CurrentAssetsAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_CurrentAssetsAbstract" xlink:to="lab_ifrs-full_CurrentAssetsAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DisclosureOfCashAndCashEquivalentsExplanatory_81e19d1c-5759-4eeb-ae6d-cf45b0b5e313_terseLabel_es" xlink:label="lab_ifrs-full_DisclosureOfCashAndCashEquivalentsExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Disclosure of cash and cash equivalents [text block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfCashAndCashEquivalentsExplanatory" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_DisclosureOfCashAndCashEquivalentsExplanatory"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DisclosureOfCashAndCashEquivalentsExplanatory" xlink:to="lab_ifrs-full_DisclosureOfCashAndCashEquivalentsExplanatory" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_IncreaseDecreaseInWorkingCapital_4d5a3962-a2fe-47b6-b6f2-dfc8f1788b5b_negatedTotalLabel_es" xlink:label="lab_ifrs-full_IncreaseDecreaseInWorkingCapital" xlink:role="http://www.xbrl.org/2009/role/negatedTotalLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Increase (decrease) in working capital</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_IncreaseDecreaseInWorkingCapital" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_IncreaseDecreaseInWorkingCapital"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_IncreaseDecreaseInWorkingCapital" xlink:to="lab_ifrs-full_IncreaseDecreaseInWorkingCapital" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_EmployeeBenefitsExpense_31342b1e-f618-4085-bb7f-701877d045a0_negatedTerseLabel_es" xlink:label="lab_ifrs-full_EmployeeBenefitsExpense" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Employee benefits expense</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_EmployeeBenefitsExpense" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_EmployeeBenefitsExpense"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_EmployeeBenefitsExpense" xlink:to="lab_ifrs-full_EmployeeBenefitsExpense" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DeferredTaxLiabilities_fe8ba387-08ef-4825-960e-ce299a1a2ce2_terseLabel_es" xlink:label="lab_ifrs-full_DeferredTaxLiabilities" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Deferred tax liabilities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DeferredTaxLiabilities" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_DeferredTaxLiabilities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DeferredTaxLiabilities" xlink:to="lab_ifrs-full_DeferredTaxLiabilities" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DisclosureOfInvestmentsAccountedForUsingEquityMethodExplanatory_dc83a22d-143f-4daf-a643-53155927baff_terseLabel_es" xlink:label="lab_ifrs-full_DisclosureOfInvestmentsAccountedForUsingEquityMethodExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Disclosure of investments accounted for using equity method [text block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfInvestmentsAccountedForUsingEquityMethodExplanatory" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_DisclosureOfInvestmentsAccountedForUsingEquityMethodExplanatory"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DisclosureOfInvestmentsAccountedForUsingEquityMethodExplanatory" xlink:to="lab_ifrs-full_DisclosureOfInvestmentsAccountedForUsingEquityMethodExplanatory" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_EquityAndLiabilities_ea6a3576-c07c-4577-a721-760dba729ccb_totalLabel_es" xlink:label="lab_ifrs-full_EquityAndLiabilities" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Equity and liabilities</link:label>
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