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    <link:loc xlink:href="biib-20190630.xsd#biib_CashflowsrevenueMember" xlink:label="loc_biib_CashflowsrevenueMember_EC047D6EE13A0C4DD7341756F226FED0" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_biib_CashflowsrevenueMember_EC047D6EE13A0C4DD7341756F226FED0" xlink:to="lab_biib_CashflowsrevenueMember_EC047D6EE13A0C4DD7341756F226FED0" xlink:type="arc" />
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    <link:label id="lab_biib_CashflowsoperatingexpensesMember_D2D2648B7722C2B7AFE71756F226740C_documentation_en-US" xlink:label="lab_biib_CashflowsoperatingexpensesMember_D2D2648B7722C2B7AFE71756F226740C" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Cash flows, operating expenses [Member]</link:label>
    <link:loc xlink:href="biib-20190630.xsd#biib_CashflowsoperatingexpensesMember" xlink:label="loc_biib_CashflowsoperatingexpensesMember_D2D2648B7722C2B7AFE71756F226740C" xlink:type="locator" />
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsLineItems" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_DE3818338C78E0F44BB90672E6B611D8" xlink:type="locator" />
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    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_B18E48BCDCDB459FA5C80672E6B74B1A_negatedLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_B18E48BCDCDB459FA5C80672E6B74B1A" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Accumulated Amortization</link:label>
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_B18E48BCDCDB459FA5C80672E6B74B1A_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_B18E48BCDCDB459FA5C80672E6B74B1A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finite-Lived Intangible Assets, Accumulated Amortization</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_B18E48BCDCDB459FA5C80672E6B74B1A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_B18E48BCDCDB459FA5C80672E6B74B1A" xlink:to="lab_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_B18E48BCDCDB459FA5C80672E6B74B1A" xlink:type="arc" />
    <link:label id="lab_us-gaap_IntangibleAssetsNetExcludingGoodwill_A3732524D1E445B6D0800672E6B77403_totalLabel_en-US" xlink:label="lab_us-gaap_IntangibleAssetsNetExcludingGoodwill_A3732524D1E445B6D0800672E6B77403" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Intangible assets, net</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IntangibleAssetsNetExcludingGoodwill" xlink:label="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_A3732524D1E445B6D0800672E6B77403" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_A3732524D1E445B6D0800672E6B77403" xlink:to="lab_us-gaap_IntangibleAssetsNetExcludingGoodwill_A3732524D1E445B6D0800672E6B77403" xlink:type="arc" />
    <link:label id="lab_us-gaap_IntangibleAssetsNetIncludingGoodwillAbstract_6E90843F5A69B06A78C30672E6B76DDD_verboseLabel_en-US" xlink:label="lab_us-gaap_IntangibleAssetsNetIncludingGoodwillAbstract_6E90843F5A69B06A78C30672E6B76DDD" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Intangible Assets and Goodwill (Textual) [Abstract]</link:label>
    <link:label id="lab_us-gaap_IntangibleAssetsNetIncludingGoodwillAbstract_6E90843F5A69B06A78C30672E6B76DDD_label_en-US" xlink:label="lab_us-gaap_IntangibleAssetsNetIncludingGoodwillAbstract_6E90843F5A69B06A78C30672E6B76DDD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Intangible Assets, Net (Including Goodwill) [Abstract]</link:label>
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    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IntangibleAssetsNetIncludingGoodwillAbstract_6E90843F5A69B06A78C30672E6B76DDD" xlink:to="lab_us-gaap_IntangibleAssetsNetIncludingGoodwillAbstract_6E90843F5A69B06A78C30672E6B76DDD" xlink:type="arc" />
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear_11BE70DDA6713EAEC7840672E6B8E89B_terseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear_11BE70DDA6713EAEC7840672E6B8E89B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Expected future amortization expense, 2019 (remaining six months)</link:label>
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear_11BE70DDA6713EAEC7840672E6B8E89B_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear_11BE70DDA6713EAEC7840672E6B8E89B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finite-Lived Intangible Assets, Amortization Expense, Remainder of Fiscal Year</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear_11BE70DDA6713EAEC7840672E6B8E89B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear_11BE70DDA6713EAEC7840672E6B8E89B" xlink:to="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear_11BE70DDA6713EAEC7840672E6B8E89B" xlink:type="arc" />
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_7FA01185B4F9422AB36A0672E6B8ADEC_terseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_7FA01185B4F9422AB36A0672E6B8ADEC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Expected future amortization expense, 2020</link:label>
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_7FA01185B4F9422AB36A0672E6B8ADEC_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_7FA01185B4F9422AB36A0672E6B8ADEC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_7FA01185B4F9422AB36A0672E6B8ADEC" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_7FA01185B4F9422AB36A0672E6B8ADEC" xlink:to="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_7FA01185B4F9422AB36A0672E6B8ADEC" xlink:type="arc" />
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_63F6CB60031F6E55C6950672E6B88D33_verboseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_63F6CB60031F6E55C6950672E6B88D33" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Expected future amortization expense, 2021</link:label>
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_63F6CB60031F6E55C6950672E6B88D33_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_63F6CB60031F6E55C6950672E6B88D33" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finite-Lived Intangible Assets, Amortization Expense, Year Two</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_63F6CB60031F6E55C6950672E6B88D33" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_63F6CB60031F6E55C6950672E6B88D33" xlink:to="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_63F6CB60031F6E55C6950672E6B88D33" xlink:type="arc" />
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_B5E5448C0CCD49B5BE090672E6B91B70_terseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_B5E5448C0CCD49B5BE090672E6B91B70" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Expected future amortization expense, 2022</link:label>
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_B5E5448C0CCD49B5BE090672E6B91B70_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_B5E5448C0CCD49B5BE090672E6B91B70" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finite-Lived Intangible Assets, Amortization Expense, Year Three</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_B5E5448C0CCD49B5BE090672E6B91B70" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_B5E5448C0CCD49B5BE090672E6B91B70" xlink:to="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_B5E5448C0CCD49B5BE090672E6B91B70" xlink:type="arc" />
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_152F877BF9DE8F37A82D0672E6B93603_verboseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_152F877BF9DE8F37A82D0672E6B93603" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Expected future amortization expense, 2023</link:label>
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_152F877BF9DE8F37A82D0672E6B93603_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_152F877BF9DE8F37A82D0672E6B93603" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finite-Lived Intangible Assets, Amortization Expense, Year Four</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_152F877BF9DE8F37A82D0672E6B93603" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_152F877BF9DE8F37A82D0672E6B93603" xlink:to="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_152F877BF9DE8F37A82D0672E6B93603" xlink:type="arc" />
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive_A2E19ED276E517F682BD0672E6B95828_terseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive_A2E19ED276E517F682BD0672E6B95828" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Expected future amortization expense, 2024</link:label>
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive_A2E19ED276E517F682BD0672E6B95828_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive_A2E19ED276E517F682BD0672E6B95828" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finite-Lived Intangible Assets, Amortization Expense, Year Five</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive_A2E19ED276E517F682BD0672E6B95828" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive_A2E19ED276E517F682BD0672E6B95828" xlink:to="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive_A2E19ED276E517F682BD0672E6B95828" xlink:type="arc" />
    <link:label id="lab_biib_DistributorOneMember_CDD059522B38A9BA3F340B174E1135C5_terseLabel_en-US" xlink:label="lab_biib_DistributorOneMember_CDD059522B38A9BA3F340B174E1135C5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Distributor One</link:label>
    <link:label id="lab_biib_DistributorOneMember_CDD059522B38A9BA3F340B174E1135C5_label_en-US" xlink:label="lab_biib_DistributorOneMember_CDD059522B38A9BA3F340B174E1135C5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Distributor One [Member]</link:label>
    <link:label id="lab_biib_DistributorOneMember_CDD059522B38A9BA3F340B174E1135C5_documentation_en-US" xlink:label="lab_biib_DistributorOneMember_CDD059522B38A9BA3F340B174E1135C5" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Distributor one.</link:label>
    <link:loc xlink:href="biib-20190630.xsd#biib_DistributorOneMember" xlink:label="loc_biib_DistributorOneMember_CDD059522B38A9BA3F340B174E1135C5" xlink:type="locator" />
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    <link:label id="lab_biib_DistributorTwoMember_106B344276CB007E612B0B174E11BA14_terseLabel_en-US" xlink:label="lab_biib_DistributorTwoMember_106B344276CB007E612B0B174E11BA14" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Distributor Two</link:label>
    <link:label id="lab_biib_DistributorTwoMember_106B344276CB007E612B0B174E11BA14_label_en-US" xlink:label="lab_biib_DistributorTwoMember_106B344276CB007E612B0B174E11BA14" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Distributor Two [Member]</link:label>
    <link:label id="lab_biib_DistributorTwoMember_106B344276CB007E612B0B174E11BA14_documentation_en-US" xlink:label="lab_biib_DistributorTwoMember_106B344276CB007E612B0B174E11BA14" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Distributor two.</link:label>
    <link:loc xlink:href="biib-20190630.xsd#biib_DistributorTwoMember" xlink:label="loc_biib_DistributorTwoMember_106B344276CB007E612B0B174E11BA14" xlink:type="locator" />
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    <link:label id="lab_us-gaap_Revenues_A9BE5CCE6376E07205940B174E12D01A_netLabel_en-US" xlink:label="lab_us-gaap_Revenues_A9BE5CCE6376E07205940B174E12D01A" xlink:role="http://www.xbrl.org/2009/role/netLabel" xlink:type="resource" xml:lang="en-US">Other Revenues</link:label>
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    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_Revenues_A9BE5CCE6376E07205940B174E12D01A" xlink:to="lab_us-gaap_Revenues_A9BE5CCE6376E07205940B174E12D01A" xlink:type="arc" />
    <link:label id="lab_biib_EntityWidePercentageOfRevenueFromMajorDistributors_AEBC734FD5B5F92EA0150B174E12A21D_terseLabel_en-US" xlink:label="lab_biib_EntityWidePercentageOfRevenueFromMajorDistributors_AEBC734FD5B5F92EA0150B174E12A21D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Percentage of revenues from major distributors</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_F6DB571288EF77EDFA720672E5D23A69" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_F6DB571288EF77EDFA720672E5D23A69" xlink:to="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_F6DB571288EF77EDFA720672E5D23A69" xlink:type="arc" />
    <link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_C3C3DFDD68E93126B1910672E5D25D67_terseLabel_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_C3C3DFDD68E93126B1910672E5D25D67" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">ASC 842 - Minimum lease payments, 2022</link:label>
    <link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_C3C3DFDD68E93126B1910672E5D25D67_label_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_C3C3DFDD68E93126B1910672E5D25D67" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Lessee, Operating Lease, Liability, Payments, Due Year Three</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_C3C3DFDD68E93126B1910672E5D25D67" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_C3C3DFDD68E93126B1910672E5D25D67" xlink:to="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_C3C3DFDD68E93126B1910672E5D25D67" xlink:type="arc" />
    <link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_25F39761256EF5398F380672E5D25317_terseLabel_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_25F39761256EF5398F380672E5D25317" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">ASC 842 - Minimum lease payments, 2023</link:label>
    <link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_25F39761256EF5398F380672E5D25317_label_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_25F39761256EF5398F380672E5D25317" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Lessee, Operating Lease, Liability, Payments, Due Year Four</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_25F39761256EF5398F380672E5D25317" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_25F39761256EF5398F380672E5D25317" xlink:to="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_25F39761256EF5398F380672E5D25317" xlink:type="arc" />
    <link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive_5CBEA86CF04B6E9856A10672E5D245CB_terseLabel_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive_5CBEA86CF04B6E9856A10672E5D245CB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">ASC 842 - Minimum lease payments, 2024</link:label>
    <link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive_5CBEA86CF04B6E9856A10672E5D245CB_label_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive_5CBEA86CF04B6E9856A10672E5D245CB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Lessee, Operating Lease, Liability, Payments, Due Year Five</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive_5CBEA86CF04B6E9856A10672E5D245CB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive_5CBEA86CF04B6E9856A10672E5D245CB" xlink:to="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive_5CBEA86CF04B6E9856A10672E5D245CB" xlink:type="arc" />
    <link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive_4F568870CA9233616D180672E5D26623_terseLabel_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive_4F568870CA9233616D180672E5D26623" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">ASC 842 - Minimum lease payments, thereafter</link:label>
    <link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive_4F568870CA9233616D180672E5D26623_label_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive_4F568870CA9233616D180672E5D26623" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Lessee, Operating Lease, Liability, Payments, Due after Year Five</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive_4F568870CA9233616D180672E5D26623" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive_4F568870CA9233616D180672E5D26623" xlink:to="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive_4F568870CA9233616D180672E5D26623" xlink:type="arc" />
    <link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_C2C7035BC43A52A81D590672E5D2B250_totalLabel_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_C2C7035BC43A52A81D590672E5D2B250" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">ASC 842 - Minimum lease payments</link:label>
    <link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_C2C7035BC43A52A81D590672E5D2B250_label_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_C2C7035BC43A52A81D590672E5D2B250" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Lessee, Operating Lease, Liability, Payments, Due</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_C2C7035BC43A52A81D590672E5D2B250" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_C2C7035BC43A52A81D590672E5D2B250" xlink:to="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_C2C7035BC43A52A81D590672E5D2B250" xlink:type="arc" />
    <link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_75A82C99DDE34F3C106F0672E5D247F2_terseLabel_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_75A82C99DDE34F3C106F0672E5D247F2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Less: Interest</link:label>
    <link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_75A82C99DDE34F3C106F0672E5D247F2_label_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_75A82C99DDE34F3C106F0672E5D247F2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Lessee, Operating Lease, Liability, Undiscounted Excess Amount</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_75A82C99DDE34F3C106F0672E5D247F2" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_75A82C99DDE34F3C106F0672E5D247F2" xlink:to="lab_us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_75A82C99DDE34F3C106F0672E5D247F2" xlink:type="arc" />
    <link:label id="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent_4A199445C2E480880BE40672E5D34BC5_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent_4A199445C2E480880BE40672E5D34BC5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">ASC 840 - Minimum lease payments, 2019</link:label>
    <link:label id="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent_4A199445C2E480880BE40672E5D34BC5_label_en-US" xlink:label="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent_4A199445C2E480880BE40672E5D34BC5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Operating Leases, Future Minimum Payments Due, Next Twelve Months</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent_4A199445C2E480880BE40672E5D34BC5" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent_4A199445C2E480880BE40672E5D34BC5" xlink:to="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent_4A199445C2E480880BE40672E5D34BC5" xlink:type="arc" />
    <link:label id="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears_5AB86A281848550210E60672E5D3DFE7_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears_5AB86A281848550210E60672E5D3DFE7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">ASC 840 - Minimum lease payments, 2020</link:label>
    <link:label id="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears_5AB86A281848550210E60672E5D3DFE7_label_en-US" xlink:label="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears_5AB86A281848550210E60672E5D3DFE7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Operating Leases, Future Minimum Payments, Due in Two Years</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears_5AB86A281848550210E60672E5D3DFE7" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears_5AB86A281848550210E60672E5D3DFE7" xlink:to="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears_5AB86A281848550210E60672E5D3DFE7" xlink:type="arc" />
    <link:label id="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears_1CE638FE993EA24E9DE10672E5D34273_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears_1CE638FE993EA24E9DE10672E5D34273" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">ASC 840 - Minimum lease payments, 2021</link:label>
    <link:label id="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears_1CE638FE993EA24E9DE10672E5D34273_label_en-US" xlink:label="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears_1CE638FE993EA24E9DE10672E5D34273" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Operating Leases, Future Minimum Payments, Due in Three Years</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears_1CE638FE993EA24E9DE10672E5D34273" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears_1CE638FE993EA24E9DE10672E5D34273" xlink:to="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears_1CE638FE993EA24E9DE10672E5D34273" xlink:type="arc" />
    <link:label id="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears_E27E4EF2420639C898BA0672E5D3A5B0_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears_E27E4EF2420639C898BA0672E5D3A5B0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">ASC 840 - Minimum lease payments, 2022</link:label>
    <link:label id="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears_E27E4EF2420639C898BA0672E5D3A5B0_label_en-US" xlink:label="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears_E27E4EF2420639C898BA0672E5D3A5B0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Operating Leases, Future Minimum Payments, Due in Four Years</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears_E27E4EF2420639C898BA0672E5D3A5B0" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears_E27E4EF2420639C898BA0672E5D3A5B0" xlink:to="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears_E27E4EF2420639C898BA0672E5D3A5B0" xlink:type="arc" />
    <link:label id="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYears_86631094B85CD04FEA5A0672E5D3161C_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYears_86631094B85CD04FEA5A0672E5D3161C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">ASC 940 - Minimum lease payments, 2023</link:label>
    <link:label id="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYears_86631094B85CD04FEA5A0672E5D3161C_label_en-US" xlink:label="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYears_86631094B85CD04FEA5A0672E5D3161C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Operating Leases, Future Minimum Payments, Due in Five Years</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYears" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYears_86631094B85CD04FEA5A0672E5D3161C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYears_86631094B85CD04FEA5A0672E5D3161C" xlink:to="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYears_86631094B85CD04FEA5A0672E5D3161C" xlink:type="arc" />
    <link:label id="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter_C42D9909CC97454D4ECB0672E5D45ACD_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter_C42D9909CC97454D4ECB0672E5D45ACD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">ASC 840 - Minimum lease payments, thereafter</link:label>
    <link:label id="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter_C42D9909CC97454D4ECB0672E5D45ACD_label_en-US" xlink:label="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter_C42D9909CC97454D4ECB0672E5D45ACD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Operating Leases, Future Minimum Payments, Due Thereafter</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter_C42D9909CC97454D4ECB0672E5D45ACD" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter_C42D9909CC97454D4ECB0672E5D45ACD" xlink:to="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter_C42D9909CC97454D4ECB0672E5D45ACD" xlink:type="arc" />
    <link:label id="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDue_530A26F1BDE4ABBD79120672E5D494C0_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDue_530A26F1BDE4ABBD79120672E5D494C0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">ASC 840 - Minimum lease payments total</link:label>
    <link:label id="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDue_530A26F1BDE4ABBD79120672E5D494C0_label_en-US" xlink:label="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDue_530A26F1BDE4ABBD79120672E5D494C0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Operating Leases, Future Minimum Payments Due</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDue" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDue_530A26F1BDE4ABBD79120672E5D494C0" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDue_530A26F1BDE4ABBD79120672E5D494C0" xlink:to="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDue_530A26F1BDE4ABBD79120672E5D494C0" xlink:type="arc" />
    <link:label id="lab_us-gaap_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinOneYear_313E7F68461A0C640E880672E5D40097_terseLabel_en-US" xlink:label="lab_us-gaap_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinOneYear_313E7F68461A0C640E880672E5D40097" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">ASC 840 - Sublease income, 2019</link:label>
    <link:label id="lab_us-gaap_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinOneYear_313E7F68461A0C640E880672E5D40097_label_en-US" xlink:label="lab_us-gaap_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinOneYear_313E7F68461A0C640E880672E5D40097" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Future Minimum Sublease Rentals, Sale Leaseback Transactions, Next Twelve Months</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinOneYear" xlink:label="loc_us-gaap_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinOneYear_313E7F68461A0C640E880672E5D40097" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinOneYear_313E7F68461A0C640E880672E5D40097" xlink:to="lab_us-gaap_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinOneYear_313E7F68461A0C640E880672E5D40097" xlink:type="arc" />
    <link:label id="lab_us-gaap_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinTwoYears_0D97393A7B226DEEBEE70672E5D499FF_terseLabel_en-US" xlink:label="lab_us-gaap_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinTwoYears_0D97393A7B226DEEBEE70672E5D499FF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">ASC 840 - Sublease income, 2020</link:label>
    <link:label id="lab_us-gaap_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinTwoYears_0D97393A7B226DEEBEE70672E5D499FF_label_en-US" xlink:label="lab_us-gaap_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinTwoYears_0D97393A7B226DEEBEE70672E5D499FF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Future Minimum Sublease Rentals, Sale Leaseback Transactions, within Two Years</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinTwoYears" xlink:label="loc_us-gaap_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinTwoYears_0D97393A7B226DEEBEE70672E5D499FF" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinTwoYears_0D97393A7B226DEEBEE70672E5D499FF" xlink:to="lab_us-gaap_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinTwoYears_0D97393A7B226DEEBEE70672E5D499FF" xlink:type="arc" />
    <link:label id="lab_us-gaap_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinThreeYears_7E52619CB03E43851F710672E5D5B644_terseLabel_en-US" xlink:label="lab_us-gaap_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinThreeYears_7E52619CB03E43851F710672E5D5B644" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">ASC 840 - Sublease income, 2021</link:label>
    <link:label id="lab_us-gaap_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinThreeYears_7E52619CB03E43851F710672E5D5B644_label_en-US" xlink:label="lab_us-gaap_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinThreeYears_7E52619CB03E43851F710672E5D5B644" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Future Minimum Sublease Rentals, Sale Leaseback Transactions, within Three Years</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinThreeYears" xlink:label="loc_us-gaap_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinThreeYears_7E52619CB03E43851F710672E5D5B644" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinThreeYears_7E52619CB03E43851F710672E5D5B644" xlink:to="lab_us-gaap_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinThreeYears_7E52619CB03E43851F710672E5D5B644" xlink:type="arc" />
    <link:label id="lab_us-gaap_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinFourYears_7262DBD74A784E4A76F80672E5D51E89_terseLabel_en-US" xlink:label="lab_us-gaap_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinFourYears_7262DBD74A784E4A76F80672E5D51E89" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">ASC 840 - Sublease income, 2022</link:label>
    <link:label id="lab_us-gaap_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinFourYears_7262DBD74A784E4A76F80672E5D51E89_label_en-US" xlink:label="lab_us-gaap_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinFourYears_7262DBD74A784E4A76F80672E5D51E89" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Future Minimum Sublease Rentals, Sale Leaseback Transactions, within Four Years</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinFourYears" xlink:label="loc_us-gaap_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinFourYears_7262DBD74A784E4A76F80672E5D51E89" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinFourYears_7262DBD74A784E4A76F80672E5D51E89" xlink:to="lab_us-gaap_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinFourYears_7262DBD74A784E4A76F80672E5D51E89" xlink:type="arc" />
    <link:label id="lab_us-gaap_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinFiveYears_E4126DECF521D9A3A7250672E5D5E97D_terseLabel_en-US" xlink:label="lab_us-gaap_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinFiveYears_E4126DECF521D9A3A7250672E5D5E97D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">ASC 840 - Sublease income, 2023</link:label>
    <link:label id="lab_us-gaap_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinFiveYears_E4126DECF521D9A3A7250672E5D5E97D_label_en-US" xlink:label="lab_us-gaap_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinFiveYears_E4126DECF521D9A3A7250672E5D5E97D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Future Minimum Sublease Rentals, Sale Leaseback Transactions, within Five Years</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinFiveYears" xlink:label="loc_us-gaap_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinFiveYears_E4126DECF521D9A3A7250672E5D5E97D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinFiveYears_E4126DECF521D9A3A7250672E5D5E97D" xlink:to="lab_us-gaap_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinFiveYears_E4126DECF521D9A3A7250672E5D5E97D" xlink:type="arc" />
    <link:label id="lab_us-gaap_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsThereafter_B41383A2C3B3A5123F2E0672E5D5C459_terseLabel_en-US" xlink:label="lab_us-gaap_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsThereafter_B41383A2C3B3A5123F2E0672E5D5C459" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">ASC 840 - Sublease income, thereafter</link:label>
    <link:label id="lab_us-gaap_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsThereafter_B41383A2C3B3A5123F2E0672E5D5C459_label_en-US" xlink:label="lab_us-gaap_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsThereafter_B41383A2C3B3A5123F2E0672E5D5C459" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Future Minimum Sublease Rentals, Sale Leaseback Transactions, Thereafter</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsThereafter" xlink:label="loc_us-gaap_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsThereafter_B41383A2C3B3A5123F2E0672E5D5C459" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsThereafter_B41383A2C3B3A5123F2E0672E5D5C459" xlink:to="lab_us-gaap_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsThereafter_B41383A2C3B3A5123F2E0672E5D5C459" xlink:type="arc" />
    <link:label id="lab_us-gaap_FutureMinimumSubleaseRentalsSaleLeasebackTransactions_582D896477C2CA2F4B9A0672E5D53C6A_terseLabel_en-US" xlink:label="lab_us-gaap_FutureMinimumSubleaseRentalsSaleLeasebackTransactions_582D896477C2CA2F4B9A0672E5D53C6A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">ASC 840 - Sublease income total</link:label>
    <link:label id="lab_us-gaap_FutureMinimumSubleaseRentalsSaleLeasebackTransactions_582D896477C2CA2F4B9A0672E5D53C6A_label_en-US" xlink:label="lab_us-gaap_FutureMinimumSubleaseRentalsSaleLeasebackTransactions_582D896477C2CA2F4B9A0672E5D53C6A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Future Minimum Sublease Rentals, Sale Leaseback Transactions</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FutureMinimumSubleaseRentalsSaleLeasebackTransactions" xlink:label="loc_us-gaap_FutureMinimumSubleaseRentalsSaleLeasebackTransactions_582D896477C2CA2F4B9A0672E5D53C6A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FutureMinimumSubleaseRentalsSaleLeasebackTransactions_582D896477C2CA2F4B9A0672E5D53C6A" xlink:to="lab_us-gaap_FutureMinimumSubleaseRentalsSaleLeasebackTransactions_582D896477C2CA2F4B9A0672E5D53C6A" xlink:type="arc" />
    <link:label id="lab_biib_NetMinimumLeasePaymentsWithInOneYear_12C528624AC4E21DFA270672E5D5C6A3_totalLabel_en-US" xlink:label="lab_biib_NetMinimumLeasePaymentsWithInOneYear_12C528624AC4E21DFA270672E5D5C6A3" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">ASC 840 - Net minimum lease payments 2019</link:label>
    <link:label id="lab_biib_NetMinimumLeasePaymentsWithInOneYear_12C528624AC4E21DFA270672E5D5C6A3_label_en-US" xlink:label="lab_biib_NetMinimumLeasePaymentsWithInOneYear_12C528624AC4E21DFA270672E5D5C6A3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net Minimum Lease Payments With In One Year</link:label>
    <link:label id="lab_biib_NetMinimumLeasePaymentsWithInOneYear_12C528624AC4E21DFA270672E5D5C6A3_documentation_en-US" xlink:label="lab_biib_NetMinimumLeasePaymentsWithInOneYear_12C528624AC4E21DFA270672E5D5C6A3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Net minimum lease payments with in one year.</link:label>
    <link:loc xlink:href="biib-20190630.xsd#biib_NetMinimumLeasePaymentsWithInOneYear" xlink:label="loc_biib_NetMinimumLeasePaymentsWithInOneYear_12C528624AC4E21DFA270672E5D5C6A3" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_biib_NetMinimumLeasePaymentsWithInOneYear_12C528624AC4E21DFA270672E5D5C6A3" xlink:to="lab_biib_NetMinimumLeasePaymentsWithInOneYear_12C528624AC4E21DFA270672E5D5C6A3" xlink:type="arc" />
    <link:label id="lab_biib_NetMinimumLeasePaymentsWithInTwoYear_002FA7C7C920C8AE696E0672E5D51A12_totalLabel_en-US" xlink:label="lab_biib_NetMinimumLeasePaymentsWithInTwoYear_002FA7C7C920C8AE696E0672E5D51A12" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">ASC 840 - Net minimum lease payments, 2020</link:label>
    <link:label id="lab_biib_NetMinimumLeasePaymentsWithInTwoYear_002FA7C7C920C8AE696E0672E5D51A12_label_en-US" xlink:label="lab_biib_NetMinimumLeasePaymentsWithInTwoYear_002FA7C7C920C8AE696E0672E5D51A12" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net Minimum Lease Payments With In Two Year</link:label>
    <link:label id="lab_biib_NetMinimumLeasePaymentsWithInTwoYear_002FA7C7C920C8AE696E0672E5D51A12_documentation_en-US" xlink:label="lab_biib_NetMinimumLeasePaymentsWithInTwoYear_002FA7C7C920C8AE696E0672E5D51A12" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Net minimum lease payments with in two year.</link:label>
    <link:loc xlink:href="biib-20190630.xsd#biib_NetMinimumLeasePaymentsWithInTwoYear" xlink:label="loc_biib_NetMinimumLeasePaymentsWithInTwoYear_002FA7C7C920C8AE696E0672E5D51A12" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_biib_NetMinimumLeasePaymentsWithInTwoYear_002FA7C7C920C8AE696E0672E5D51A12" xlink:to="lab_biib_NetMinimumLeasePaymentsWithInTwoYear_002FA7C7C920C8AE696E0672E5D51A12" xlink:type="arc" />
    <link:label id="lab_biib_NetMinimumLeasePaymentsWithInThreeYear_443BD1F2934C0FC7A7800672E5D62388_totalLabel_en-US" xlink:label="lab_biib_NetMinimumLeasePaymentsWithInThreeYear_443BD1F2934C0FC7A7800672E5D62388" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">ASC 840 - Net minimum lease payments, 2021</link:label>
    <link:label id="lab_biib_NetMinimumLeasePaymentsWithInThreeYear_443BD1F2934C0FC7A7800672E5D62388_label_en-US" xlink:label="lab_biib_NetMinimumLeasePaymentsWithInThreeYear_443BD1F2934C0FC7A7800672E5D62388" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net Minimum Lease Payments With In Three Year</link:label>
    <link:label id="lab_biib_NetMinimumLeasePaymentsWithInThreeYear_443BD1F2934C0FC7A7800672E5D62388_documentation_en-US" xlink:label="lab_biib_NetMinimumLeasePaymentsWithInThreeYear_443BD1F2934C0FC7A7800672E5D62388" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Net minimum lease payments with in three year.</link:label>
    <link:loc xlink:href="biib-20190630.xsd#biib_NetMinimumLeasePaymentsWithInThreeYear" xlink:label="loc_biib_NetMinimumLeasePaymentsWithInThreeYear_443BD1F2934C0FC7A7800672E5D62388" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_biib_NetMinimumLeasePaymentsWithInThreeYear_443BD1F2934C0FC7A7800672E5D62388" xlink:to="lab_biib_NetMinimumLeasePaymentsWithInThreeYear_443BD1F2934C0FC7A7800672E5D62388" xlink:type="arc" />
    <link:label id="lab_biib_NetMinimumLeasePaymentsWithInFourYear_841FEF95004077F680620672E5D642BF_totalLabel_en-US" xlink:label="lab_biib_NetMinimumLeasePaymentsWithInFourYear_841FEF95004077F680620672E5D642BF" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">ASC 840 - Net minimum lease payments, 2022</link:label>
    <link:label id="lab_biib_NetMinimumLeasePaymentsWithInFourYear_841FEF95004077F680620672E5D642BF_label_en-US" xlink:label="lab_biib_NetMinimumLeasePaymentsWithInFourYear_841FEF95004077F680620672E5D642BF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net Minimum Lease Payments With In Four Year</link:label>
    <link:label id="lab_biib_NetMinimumLeasePaymentsWithInFourYear_841FEF95004077F680620672E5D642BF_documentation_en-US" xlink:label="lab_biib_NetMinimumLeasePaymentsWithInFourYear_841FEF95004077F680620672E5D642BF" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Net minimum lease payments with in four year.</link:label>
    <link:loc xlink:href="biib-20190630.xsd#biib_NetMinimumLeasePaymentsWithInFourYear" xlink:label="loc_biib_NetMinimumLeasePaymentsWithInFourYear_841FEF95004077F680620672E5D642BF" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_biib_NetMinimumLeasePaymentsWithInFourYear_841FEF95004077F680620672E5D642BF" xlink:to="lab_biib_NetMinimumLeasePaymentsWithInFourYear_841FEF95004077F680620672E5D642BF" xlink:type="arc" />
    <link:label id="lab_biib_NetMinimumLeasePaymentsWithInFiveYear_E64B4E9227A11A99B94D0672E5D6A39E_totalLabel_en-US" xlink:label="lab_biib_NetMinimumLeasePaymentsWithInFiveYear_E64B4E9227A11A99B94D0672E5D6A39E" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">ASC 840 - Net minimum lease payments, 2023</link:label>
    <link:label id="lab_biib_NetMinimumLeasePaymentsWithInFiveYear_E64B4E9227A11A99B94D0672E5D6A39E_label_en-US" xlink:label="lab_biib_NetMinimumLeasePaymentsWithInFiveYear_E64B4E9227A11A99B94D0672E5D6A39E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net Minimum Lease Payments With In Five Year</link:label>
    <link:label id="lab_biib_NetMinimumLeasePaymentsWithInFiveYear_E64B4E9227A11A99B94D0672E5D6A39E_documentation_en-US" xlink:label="lab_biib_NetMinimumLeasePaymentsWithInFiveYear_E64B4E9227A11A99B94D0672E5D6A39E" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Net minimum lease payments with in five year.</link:label>
    <link:loc xlink:href="biib-20190630.xsd#biib_NetMinimumLeasePaymentsWithInFiveYear" xlink:label="loc_biib_NetMinimumLeasePaymentsWithInFiveYear_E64B4E9227A11A99B94D0672E5D6A39E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_biib_NetMinimumLeasePaymentsWithInFiveYear_E64B4E9227A11A99B94D0672E5D6A39E" xlink:to="lab_biib_NetMinimumLeasePaymentsWithInFiveYear_E64B4E9227A11A99B94D0672E5D6A39E" xlink:type="arc" />
    <link:label id="lab_biib_NetMinimumLeasePaymentsThereafter_DA3186B486F9079810690672E5D6D96D_totalLabel_en-US" xlink:label="lab_biib_NetMinimumLeasePaymentsThereafter_DA3186B486F9079810690672E5D6D96D" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">ASC 840 - Net minimum lease payments, thereafter</link:label>
    <link:label id="lab_biib_NetMinimumLeasePaymentsThereafter_DA3186B486F9079810690672E5D6D96D_label_en-US" xlink:label="lab_biib_NetMinimumLeasePaymentsThereafter_DA3186B486F9079810690672E5D6D96D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net Minimum Lease Payments Thereafter</link:label>
    <link:label id="lab_biib_NetMinimumLeasePaymentsThereafter_DA3186B486F9079810690672E5D6D96D_documentation_en-US" xlink:label="lab_biib_NetMinimumLeasePaymentsThereafter_DA3186B486F9079810690672E5D6D96D" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Net minimum lease payments thereafter.</link:label>
    <link:loc xlink:href="biib-20190630.xsd#biib_NetMinimumLeasePaymentsThereafter" xlink:label="loc_biib_NetMinimumLeasePaymentsThereafter_DA3186B486F9079810690672E5D6D96D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_biib_NetMinimumLeasePaymentsThereafter_DA3186B486F9079810690672E5D6D96D" xlink:to="lab_biib_NetMinimumLeasePaymentsThereafter_DA3186B486F9079810690672E5D6D96D" xlink:type="arc" />
    <link:label id="lab_biib_NetMinimumLeasePayments_A8973C87BF46A6FEFC430672E5D6F7BE_totalLabel_en-US" xlink:label="lab_biib_NetMinimumLeasePayments_A8973C87BF46A6FEFC430672E5D6F7BE" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">ASC 840 - Net minimum lease payments total</link:label>
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