American Federation of Government Workers

American Federation of State, County and Municipal Employees

American Federation of Teachers

Amalgamated Transit Union

International Association of Heat and Frost Insulators and Asbestos Workers

Bakery, Confectionery, Tobacco Workers and Grain Millers International Union

Boilermakers, Iron Ship Builders, Blacksmiths, Forgers and Helpers International Union

International Union of Bricklayers and Allied Craftworkers

Communications Workers of America

International Brotherhood of Electrical Workers

International Union of Electronic, Electrical, Salaried, Machine and Furniture Workers

International Union of Elevator Constructors

International Association of Firefighters

Glass, Molders, Pottery, Plastics and Allied Workers International Union

Graphic Communications International Union

Laborers' International Union of North America

National Association of Letter Carriers

Brotherhood of Locomotive Engineers

International Association of Machinists and Aerospace Workers

Brotherhood of Maintenance of Way Employees

American Federation of Musicians

Office and Professional Employees International Union

International Union of Operating Engineers

International Union of Painters and Allied Trades

Paper, Allied-Industrial, Chemical and Energy Workers

United Association of Journeymen and Apprentices of the Plumbing and Pipe Fitting Industry

International Union of Police Associations

American Postal Workers Association

United Union of Roofers, Waterproofers and Allied Workers

Sheet Metal Workers International Associations

United Steelworkers

International Association of Bridge, Structural and Ornamental Iron Workers

International Brotherhood of Teamsters

International Alliance of Theatrical Stage Employees and Moving Picture Technicians, Artists and Allied Crafts

Transport Workers Union of America

Professional Airways Systems Specialists