- Amalgamated Transit Union (ATU)
- American Federation of Government Employees (AFGE)
- American Federation of Musicians of the United States and Canada (AFM)
- American Federation of State, County and Municipal Employees (AFSCME)
- American Federation of Teachers (AFT)
- American Postal Workers Union (APWU)
- Communications Workers of America (CWA)
- Industrial Union of Electronic Workers (IUE-CWA)
- The Newspaper Guild (TNG-CWA)
- Glass, Molders, Pottery, Plastics & Allied Workers International Union (GMP)
- International Alliance of Theatrical Stage Employes, Moving Picture Technicians, Artists and Allied Crafts of the United States, Its Territories and Canada (IATSE)
- International Association of Bridge, Structural, Ornamental and Reinforcing Iron Workers (Ironworkers)
- International Association of Fire Fighters (IAFF)
- International Association of Heat and Frost Insulators and Allied Workers (HFIAW)
- International Association of Machinists and Aerospace Workers (IAM)
- International Association of Sheet Metal, Air, Rail and Transportation Workers (SMART)
- International Brotherhood of Boilermakers, Iron Ship Builders, Blacksmiths, Forgers and Helpers (IBB)
- International Brotherhood of Electrical Workers (IBEW)
- International Union of Bricklayers and Allied Craftworkers (BAC)
- International Union of Elevator Constructors (IUEC)
- International Union of Operating Engineers (IUOE)
- International Union of Painters and Allied Trades of the United States and Canada (IUPAT)
- International Union of Police Associations (IUPA)
- Laborers' International Union of North America (LIUNA)
- National Air Traffic Controllers Association (NATCA)
- National Association of Letter Carriers (NALC)
- NFL Players Association (NFLPA)
- Office and Professional Employees International Union (OPEIU)
- Operative Plasterers' and Cement Masons' International Association of the United States and Canada (OPCMIA)
- Transport Workers Union of America (TWU)
- UNITE HERE (UNITE HERE)
- United Association of Journeymen and Apprentices of the Plumbing and Pipe Fitting Industry of the United States and Canada (UA)
- United Food and Commercial Workers International Union (UFCW)
- Retail, Wholesale and Department Store Union (RWDSU-UFCW)
- United Mine Workers of America (UMWA)
- United Steel, Paper and Forestry, Rubber, Manufacturing, Energy, Allied Industrial & Service Workers International Union (USW)
- United Union of Roofers, Waterproofers and Allied Workers (Roofers and Waterproofers)