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    <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>
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    <link:label id="lab_mer_DescriptionOfAccountingPolicyForEquityInstrumentsTextBlock_documentation_es" xlink:label="lab_mer_DescriptionOfAccountingPolicyForEquityInstrumentsTextBlock" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Description of accounting policy for equity instruments</link:label>
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    <link:label id="lab_ifrs-full_IncreaseDecreaseInWorkingCapital_f19392c7-e469-458c-aeb7-e9def3ed2f38_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>
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    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_mer_CollectionOfDividendsOrRefundsOfIssuancePremiumOfAssociatedCompanies" xlink:to="lab_mer_CollectionOfDividendsOrRefundsOfIssuancePremiumOfAssociatedCompanies" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_RepaymentsOfBondsNotesAndDebentures_85cff4de-f4f2-4402-9a36-19dada968daa_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/2021-03-24/full_ifrs/full_ifrs-cor_2021-03-24.xsd#ifrs-full_RepaymentsOfBondsNotesAndDebentures"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_RepaymentsOfBondsNotesAndDebentures" xlink:to="lab_ifrs-full_RepaymentsOfBondsNotesAndDebentures" xlink:type="arc" order="1"/>
    <link:label id="lab_mer_ChangeInFairValueOfAllFinancialInstruments_label_es" xlink:label="lab_mer_ChangeInFairValueOfAllFinancialInstruments" 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 all financial instruments</link:label>
    <link:label id="lab_mer_ChangeInFairValueOfAllFinancialInstruments_documentation_es" xlink:label="lab_mer_ChangeInFairValueOfAllFinancialInstruments" 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 all financial instruments</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_mer_ChangeInFairValueOfAllFinancialInstruments" xlink:href="959800L8KD863DP30X04-2022-12-31.xsd#mer_ChangeInFairValueOfAllFinancialInstruments"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_mer_ChangeInFairValueOfAllFinancialInstruments" xlink:to="lab_mer_ChangeInFairValueOfAllFinancialInstruments" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_AdjustmentsForDecreaseIncreaseInTradeAndOtherReceivables_bc338eaf-0e00-4e6f-9a5e-ffa65532fdf5_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/2021-03-24/full_ifrs/full_ifrs-cor_2021-03-24.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_ifrs-full_CashFlowsFromUsedInInvestingActivitiesContinuingOperations_f7b27921-6df9-4cf9-9c46-5852a91f894e_negatedTotalLabel_es" xlink:label="lab_ifrs-full_CashFlowsFromUsedInInvestingActivitiesContinuingOperations" xlink:role="http://www.xbrl.org/2009/role/negatedTotalLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Flujos de efectivo procedentes de (utilizados en) actividades de inversión, actividades continuadas</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CashFlowsFromUsedInInvestingActivitiesContinuingOperations" xlink:href="http://xbrl.ifrs.org/taxonomy/2021-03-24/full_ifrs/full_ifrs-cor_2021-03-24.xsd#ifrs-full_CashFlowsFromUsedInInvestingActivitiesContinuingOperations"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_CashFlowsFromUsedInInvestingActivitiesContinuingOperations" xlink:to="lab_ifrs-full_CashFlowsFromUsedInInvestingActivitiesContinuingOperations" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_CashFlowsFromUsedInFinancingActivitiesContinuingOperations_0c3f1053-dc02-45e8-8993-50c254c98972_negatedTotalLabel_es" xlink:label="lab_ifrs-full_CashFlowsFromUsedInFinancingActivitiesContinuingOperations" xlink:role="http://www.xbrl.org/2009/role/negatedTotalLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Flujos de efectivo procedentes de (utilizados en) actividades de financiación, actividades continuadas</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CashFlowsFromUsedInFinancingActivitiesContinuingOperations" xlink:href="http://xbrl.ifrs.org/taxonomy/2021-03-24/full_ifrs/full_ifrs-cor_2021-03-24.xsd#ifrs-full_CashFlowsFromUsedInFinancingActivitiesContinuingOperations"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_CashFlowsFromUsedInFinancingActivitiesContinuingOperations" xlink:to="lab_ifrs-full_CashFlowsFromUsedInFinancingActivitiesContinuingOperations" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_IncreaseDecreaseInCashAndCashEquivalentsDiscontinuedOperations_80c3d291-0714-40d1-9c9e-b2beb0276985_totalLabel_es" xlink:label="lab_ifrs-full_IncreaseDecreaseInCashAndCashEquivalentsDiscontinuedOperations" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Aumento disminución de efectivo, actividades discontinuadas</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_IncreaseDecreaseInCashAndCashEquivalentsDiscontinuedOperations" xlink:href="http://xbrl.ifrs.org/taxonomy/2021-03-24/full_ifrs/full_ifrs-cor_2021-03-24.xsd#ifrs-full_IncreaseDecreaseInCashAndCashEquivalentsDiscontinuedOperations"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_IncreaseDecreaseInCashAndCashEquivalentsDiscontinuedOperations" xlink:to="lab_ifrs-full_IncreaseDecreaseInCashAndCashEquivalentsDiscontinuedOperations" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_AdjustmentsForDecreaseIncreaseInOtherCurrentAssets_a03562e9-a7ae-45ee-99d0-c365be7fa3bb_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/2021-03-24/full_ifrs/full_ifrs-cor_2021-03-24.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_mer_ContributionsFromDiscontinuedFinancialActivities_label_es" xlink:label="lab_mer_ContributionsFromDiscontinuedFinancialActivities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Contributions from discontinued financial activities</link:label>
    <link:label id="lab_mer_ContributionsFromDiscontinuedFinancialActivities_documentation_es" xlink:label="lab_mer_ContributionsFromDiscontinuedFinancialActivities" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Contributions from discontinued financial activities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_mer_ContributionsFromDiscontinuedFinancialActivities" xlink:href="959800L8KD863DP30X04-2022-12-31.xsd#mer_ContributionsFromDiscontinuedFinancialActivities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_mer_ContributionsFromDiscontinuedFinancialActivities" xlink:to="lab_mer_ContributionsFromDiscontinuedFinancialActivities" xlink:type="arc" order="1"/>
    <link:label id="lab_mer_OtherEquityInstruments_637618b3-eb44-42ec-913e-8a9151ff5741_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>
    <link:label id="lab_mer_OtherEquityInstruments_label_es" xlink:label="lab_mer_OtherEquityInstruments" 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 Instruments</link:label>
    <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>
    <link:loc xlink:type="locator" xlink:label="loc_mer_OtherEquityInstruments" xlink:href="959800L8KD863DP30X04-2022-12-31.xsd#mer_OtherEquityInstruments"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_mer_OtherEquityInstruments" xlink:to="lab_mer_OtherEquityInstruments" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_AdjustmentsForIncreaseDecreaseInTradeAndOtherPayables_e474ffe4-5bd8-4586-a46d-43b798819af0_negatedTerseLabel_es" xlink:label="lab_ifrs-full_AdjustmentsForIncreaseDecreaseInTradeAndOtherPayables" 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 increase (decrease) in trade and other payables</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_AdjustmentsForIncreaseDecreaseInTradeAndOtherPayables" xlink:href="http://xbrl.ifrs.org/taxonomy/2021-03-24/full_ifrs/full_ifrs-cor_2021-03-24.xsd#ifrs-full_AdjustmentsForIncreaseDecreaseInTradeAndOtherPayables"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_AdjustmentsForIncreaseDecreaseInTradeAndOtherPayables" xlink:to="lab_ifrs-full_AdjustmentsForIncreaseDecreaseInTradeAndOtherPayables" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_PurchaseOfInvestmentProperty_c645bf65-5d93-471b-aaec-775a8966ac33_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/2021-03-24/full_ifrs/full_ifrs-cor_2021-03-24.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_ProfitLossAttributableToOwnersOfParent_b88cde5e-31c1-4187-8724-069a9098d5a7_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/2021-03-24/full_ifrs/full_ifrs-cor_2021-03-24.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_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="959800L8KD863DP30X04-2022-12-31.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_ProceedsFromBorrowingsClassifiedAsFinancingActivities_a21291a2-85fc-4c5d-bfc5-a1499016db95_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/2021-03-24/full_ifrs/full_ifrs-cor_2021-03-24.xsd#ifrs-full_ProceedsFromBorrowingsClassifiedAsFinancingActivities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_ProceedsFromBorrowingsClassifiedAsFinancingActivities" xlink:to="lab_ifrs-full_ProceedsFromBorrowingsClassifiedAsFinancingActivities" xlink:type="arc" order="1"/>
    <link:label id="lab_mer_ShareBasedPayments_f8d0a03f-03b7-4870-a488-8d74cdfa97c2_negatedLabel_es" xlink:label="lab_mer_ShareBasedPayments" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Share-based payments</link:label>
    <link:label id="lab_mer_ShareBasedPayments_label_es" xlink:label="lab_mer_ShareBasedPayments" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Share-based payments</link:label>
    <link:label id="lab_mer_ShareBasedPayments_documentation_es" xlink:label="lab_mer_ShareBasedPayments" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Share-based payments</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_mer_ShareBasedPayments" xlink:href="959800L8KD863DP30X04-2022-12-31.xsd#mer_ShareBasedPayments"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_mer_ShareBasedPayments" xlink:to="lab_mer_ShareBasedPayments" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_EmployeeBenefitsExpense_a4013abc-75b8-4af6-8eb4-64837bd1ede7_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/2021-03-24/full_ifrs/full_ifrs-cor_2021-03-24.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_mer_CashAndCashEquivalentsIncorporatedInTheTransactionDiscontinuedOperations_label_es" xlink:label="lab_mer_CashAndCashEquivalentsIncorporatedInTheTransactionDiscontinuedOperations" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Cash and cash equivalents incorporated in the transaction, discontinued operations</link:label>
    <link:label id="lab_mer_CashAndCashEquivalentsIncorporatedInTheTransactionDiscontinuedOperations_documentation_es" xlink:label="lab_mer_CashAndCashEquivalentsIncorporatedInTheTransactionDiscontinuedOperations" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Cash and cash equivalents incorporated in the transaction, discontinued operations</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_mer_CashAndCashEquivalentsIncorporatedInTheTransactionDiscontinuedOperations" xlink:href="959800L8KD863DP30X04-2022-12-31.xsd#mer_CashAndCashEquivalentsIncorporatedInTheTransactionDiscontinuedOperations"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_mer_CashAndCashEquivalentsIncorporatedInTheTransactionDiscontinuedOperations" xlink:to="lab_mer_CashAndCashEquivalentsIncorporatedInTheTransactionDiscontinuedOperations" xlink:type="arc" order="1"/>
    <link:label id="lab_mer_DistributionOfResults_4aa95784-8449-4645-882f-78bfb6c96bd1_negatedLabel_es" xlink:label="lab_mer_DistributionOfResults" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" 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>
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    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_mer_DistributionOfResults" xlink:to="lab_mer_DistributionOfResults" xlink:type="arc" order="1"/>
    <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="959800L8KD863DP30X04-2022-12-31.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_mer_CancellationOfInterestRateDerivatives_label_es" xlink:label="lab_mer_CancellationOfInterestRateDerivatives" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Cancellation of interest rate derivatives</link:label>
    <link:label id="lab_mer_CancellationOfInterestRateDerivatives_documentation_es" xlink:label="lab_mer_CancellationOfInterestRateDerivatives" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Cancellation of interest rate derivatives</link:label>
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    <link:label id="lab_ifrs-full_PaymentsToAcquireOrRedeemEntitysShares_5bda2475-b291-4d4c-8cce-416c8b7a245d_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>
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    <link:label id="lab_ifrs-full_AdjustmentsForGainsLossesOnFairValueAdjustmentInvestmentProperty_180641df-cabb-416d-a5dd-536ab28315e2_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/2021-03-24/full_ifrs/full_ifrs-cor_2021-03-24.xsd#ifrs-full_AdjustmentsForGainsLossesOnFairValueAdjustmentInvestmentProperty"/>
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    <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="959800L8KD863DP30X04-2022-12-31.xsd#mer_ProfitLossAttributableToOwnersOfTheParent"/>
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    <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="959800L8KD863DP30X04-2022-12-31.xsd#mer_OtherEquityHolderContributions"/>
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    <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>
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    <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="959800L8KD863DP30X04-2022-12-31.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_CashFlowsFromUsedInOperatingActivitiesContinuingOperations_b1727db7-a24a-4b18-8d49-772b71a77ca2_totalLabel_es" xlink:label="lab_ifrs-full_CashFlowsFromUsedInOperatingActivitiesContinuingOperations" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Flujos de efectivo procedentes de (utilizados en) actividades de explotación, actividades continuadas</link:label>
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    <link:label id="lab_mer_PerimeterVariations_label_es" xlink:label="lab_mer_PerimeterVariations" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Perimeter variations</link:label>
    <link:label id="lab_mer_PerimeterVariations_documentation_es" xlink:label="lab_mer_PerimeterVariations" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Perimeter variations</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_mer_PerimeterVariations" xlink:href="959800L8KD863DP30X04-2022-12-31.xsd#mer_PerimeterVariations"/>
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    <link:label id="lab_ifrs-full_IncomeTaxesPaidClassifiedAsOperatingActivities_bf773680-73d0-42fd-9765-62a99b5d1ef2_negatedTerseLabel_es" xlink:label="lab_ifrs-full_IncomeTaxesPaidClassifiedAsOperatingActivities" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="es">Income taxes paid, classified as operating activities</link:label>
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    <link:label id="lab_ifrs-full_PaymentsOfOtherEquityInstruments_965b6417-4c04-40d6-82d6-b69b0471c25a_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/2021-03-24/full_ifrs/full_ifrs-cor_2021-03-24.xsd#ifrs-full_PaymentsOfOtherEquityInstruments"/>
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    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CashFlowsFromUsedInOperations" xlink:href="http://xbrl.ifrs.org/taxonomy/2021-03-24/full_ifrs/full_ifrs-cor_2021-03-24.xsd#ifrs-full_CashFlowsFromUsedInOperations"/>
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