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Union Membership Statistics: Global

  • International Labour Organization:
    • Industrial Relations Data (IRData) - "...includes data on trade union density and collective bargaining coverage." Accessible through ILOSTAT.
    • "The UNIONS database contains statistics on trade union membership for 63 countries. These statistics are taken from official national statistical publications."
  • ILO Bureau of Statistics: Statistics of Trade Union Membership (2010, unpublished)

"Data for 49 countries taken mainly from national statistical publications" - includes contact information for sources‚Äč

Union Membership Statistics: U.S.