- AFL-CIO (American Federation of Labor and Congress of Industrial Organizations), Corporate Governance
- AFL-CIO, Executive PayWatch
- American Federation of State, County and Municipal Employees
- United Brotherhood of Carpenters
- Trades Union Congress (U.K.)
- European Federation of Employee Share Ownership
- European Trade Union Confederation
- ESOP Association
- International Brotherhood of Teamsters
- International Federation of Free Trade Unions
- International Labour Organization
- Kellogg College, University of Oxford, Centre for Mutual and Employee-owned Business
- National Center For Employee Ownership
- Ownership Associates, Inc., Online Resources
- Trade Union Advisory Committee to the OECD
- Vermont Employee Ownership Center
- worker-participation.eu, European Company Law and Corporate Governance
Updated on April 18th, 2014.