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    <link:loc xlink:type="locator" xlink:label="loc_mer_DescriptionOfAccountingPolicyForCurrentAssetsAndLiabilitiesTextBlock" xlink:href="959800L8KD863DP30X04-2022-12-31.xsd#mer_DescriptionOfAccountingPolicyForCurrentAssetsAndLiabilitiesTextBlock"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_mer_DescriptionOfAccountingPolicyForCurrentAssetsAndLiabilitiesTextBlock" xlink:to="lab_mer_DescriptionOfAccountingPolicyForCurrentAssetsAndLiabilitiesTextBlock" xlink:type="arc" order="1"/>
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    <link:label id="lab_mer_ContributionsToAssociatedCompaniesAndOtherNonCurrentInvestments_label_en" xlink:label="lab_mer_ContributionsToAssociatedCompaniesAndOtherNonCurrentInvestments" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en">Contributions to associated companies and other non-current investments</link:label>
    <link:label id="lab_mer_ContributionsToAssociatedCompaniesAndOtherNonCurrentInvestments_documentation_en" xlink:label="lab_mer_ContributionsToAssociatedCompaniesAndOtherNonCurrentInvestments" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en">Contributions to associated companies and other non-current investments</link:label>
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    <link:label id="lab_mer_DescriptionOfAccountingPolicyForEquityInstrumentsTextBlock_label_en" xlink:label="lab_mer_DescriptionOfAccountingPolicyForEquityInstrumentsTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en">Description of accounting policy for equity instruments [Text Block]</link:label>
    <link:label id="lab_mer_DescriptionOfAccountingPolicyForEquityInstrumentsTextBlock_documentation_en" 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="en">Description of accounting policy for equity instruments</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_mer_DescriptionOfAccountingPolicyForEquityInstrumentsTextBlock" xlink:href="959800L8KD863DP30X04-2022-12-31.xsd#mer_DescriptionOfAccountingPolicyForEquityInstrumentsTextBlock"/>
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    <link:label id="lab_ifrs-full_DepreciationAndAmortisationExpense_e97762f8-781a-4495-9ae9-9f47740bacee_negatedTerseLabel_en" 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="en">Depreciation and amortisation expense</link:label>
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    <link:label id="lab_ifrs-full_IncreaseDecreaseInWorkingCapital_19f9473a-9ff9-436f-9414-a4d6754eb2ed_negatedTotalLabel_en" 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="en">Increase (decrease) in working capital</link:label>
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    <link:label id="lab_mer_CollectionOfDividendsOrRefundsOfIssuancePremiumOfAssociatedCompanies_label_en" xlink:label="lab_mer_CollectionOfDividendsOrRefundsOfIssuancePremiumOfAssociatedCompanies" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xmlns:xml="http://www.w3.org/XML/1998/namespace" xml:lang="en">Collection of dividends or refunds of issuance premium of associated companies</link:label>
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    <link:label id="lab_ifrs-full_RepaymentsOfBondsNotesAndDebentures_84e86763-a310-419c-a213-00d73db6a331_negatedTerseLabel_en" 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="en">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_en" 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="en">Change in fair value of all financial instruments</link:label>
    <link:label id="lab_mer_ChangeInFairValueOfAllFinancialInstruments_documentation_en" 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="en">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_f2f024a7-3f4f-40ca-8303-cdeb6ba9a8dd_negatedTerseLabel_en" 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="en">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_47c7262f-159e-4177-9cfd-22ada8a6f637_negatedTotalLabel_en" 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="en">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_10ec903b-d69b-4811-a956-4c127ec5b89c_negatedTotalLabel_en" 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="en">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_9f6f68ed-67c9-40c5-a630-8b9ad097da60_totalLabel_en" 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="en">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_c7bb98ca-ab3c-4242-80d8-6507b2d9eb6d_negatedTerseLabel_en" 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="en">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_en" 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="en">Contributions from discontinued financial activities</link:label>
    <link:label id="lab_mer_ContributionsFromDiscontinuedFinancialActivities_documentation_en" 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="en">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_6328faa5-621c-4c5f-a8e3-f954b666af07_negatedLabel_en" 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="en">Other Equity Instruments</link:label>
    <link:label id="lab_mer_OtherEquityInstruments_label_en" 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="en">Other Equity Instruments</link:label>
    <link:label id="lab_mer_OtherEquityInstruments_documentation_en" 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="en">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_252ea106-cc5d-423a-b4f3-51f738b9fe5d_negatedTerseLabel_en" 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="en">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_50ef56c3-64fd-4c50-a66f-10480d20769d_negatedTerseLabel_en" 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="en">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_375a0ad3-a3bc-4769-956e-b0c3583390a1_totalLabel_en" 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="en">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_en" 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="en">Disclosure of changes in consolidation perimeter [Text Block]</link:label>
    <link:label id="lab_mer_DisclosureOfChangesInConsolidationPerimeterTextBlock_documentation_en" 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="en">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_ed0149f8-05e1-41b3-957a-543ff27bc414_negatedTerseLabel_en" 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="en">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_b0c08328-a3f5-446f-812f-501ea69c8c42_negatedLabel_en" 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="en">Share-based payments</link:label>
    <link:label id="lab_mer_ShareBasedPayments_label_en" 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="en">Share-based payments</link:label>
    <link:label id="lab_mer_ShareBasedPayments_documentation_en" 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="en">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_a764f255-0494-4465-a5fd-a0f03c508bbb_negatedTerseLabel_en" 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="en">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_en" 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="en">Cash and cash equivalents incorporated in the transaction, discontinued operations</link:label>
    <link:label id="lab_mer_CashAndCashEquivalentsIncorporatedInTheTransactionDiscontinuedOperations_documentation_en" 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="en">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_ed9bbaaa-c919-4a09-afd4-b6177acb98f1_negatedLabel_en" 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="en">Distribution of results</link:label>
    <link:label id="lab_mer_DistributionOfResults_label_en" 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="en">Distribution of results</link:label>
    <link:label id="lab_mer_DistributionOfResults_documentation_en" 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="en">The amount of distribution of results</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_mer_DistributionOfResults" xlink:href="959800L8KD863DP30X04-2022-12-31.xsd#mer_DistributionOfResults"/>
    <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_en" 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="en">Increase (decrease) through share-based payment transactions Stock Plan, equity</link:label>
    <link:label id="lab_mer_IncreaseDecreaseThroughShareBasedPaymentTransactionsStockPlanEquity_documentation_en" 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="en">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_en" 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="en">Cancellation of interest rate derivatives</link:label>
    <link:label id="lab_mer_CancellationOfInterestRateDerivatives_documentation_en" 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="en">Cancellation of interest rate derivatives</link:label>
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    <link:label id="lab_ifrs-full_PaymentsToAcquireOrRedeemEntitysShares_50d538b4-20f2-4772-86d8-a4c32ec38631_negatedTerseLabel_en" 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="en">Payments to acquire or redeem entity's shares</link:label>
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    <link:label id="lab_ifrs-full_AdjustmentsForGainsLossesOnFairValueAdjustmentInvestmentProperty_e4f304ab-7d2a-42c0-b339-d0b9c91dc65a_negatedTerseLabel_en" 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="en">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_en" 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="en">Profit (loss) attributable to owners of the parent</link:label>
    <link:label id="lab_mer_ProfitLossAttributableToOwnersOfTheParent_documentation_en" 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="en">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_en" 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="en">Other equity holder contributions</link:label>
    <link:label id="lab_mer_OtherEquityHolderContributions_documentation_en" 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="en">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_en" 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="en">Interim dividend [Member]</link:label>
    <link:label id="lab_mer_InterimDividendMember_documentation_en" 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="en">This member stands for the interim dividends.</link:label>
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    <link:label id="lab_mer_OtherEquityHolderContributionsMember_label_en" 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="en">Other equity holder contributions [Member]</link:label>
    <link:label id="lab_mer_OtherEquityHolderContributionsMember_documentation_en" 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="en">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_8dc14a7b-9f68-4860-a7cd-090c37860163_totalLabel_en" 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="en">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_en" 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="en">Perimeter variations</link:label>
    <link:label id="lab_mer_PerimeterVariations_documentation_en" 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="en">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_3830418f-68b6-46ca-80e3-22775b835d96_negatedTerseLabel_en" 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="en">Income taxes paid, classified as operating activities</link:label>
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    <link:label id="lab_ifrs-full_PaymentsOfOtherEquityInstruments_77c82100-8097-495f-8686-5fc7c3347ec7_negatedTerseLabel_en" 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="en">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"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_PaymentsOfOtherEquityInstruments" xlink:to="lab_ifrs-full_PaymentsOfOtherEquityInstruments" xlink:type="arc" order="1"/>
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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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