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American Federation of Government Employees
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American Federation of Musicians
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American Federation of State County & Municipal Employees
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American Federation of Teachers
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American Postal Workers Union
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Amalgamated Transit Union
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The International Assoc. of Heat & Frost Insulators & Allied Workers
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International Union of Bricklayers and Allied Craftworkers​​
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Brotherhood of Railway Signalmen
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Bakery, Confectionery, Tobacco Workers & Grain Millers International Union
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Communications Workers of America
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Glass, Molders, Pottery, Plastics & Allied Workers International Union
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Iron Workers
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International Assoc. of Fire Fighters
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International Assoc. of Machinists & Aerospace Workers
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International Alliance of Theatrical Stage Employees
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International Brotherhood of Boilermakers
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International Brotherhood of Electrical Workers
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International Federation of Professional & Technical Engineers
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International Organization of Masters, Mates & Pilots
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International Union of Elevator Constructors
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International Union of Operating Engineers
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International Union of Painters & Allied Trades
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Laborers International Union of North America
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National Association of Letter Carriers
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National Air Traffic Controllers Association
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Operative Plasterers & Cement Masons International Assoc.
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Office & Professional Employees International Union
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Oregon Federation of Nurses and Health Professionals
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Oregon Nurses Association
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Oregon School Employees Association
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Professional Aviation Safety Specialists
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Screen Actors Guild & American Federation of Television & Radio Artists
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Sheet Metal, Air, Rail & Transportation
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United Association of Plumbers & Fitters
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United Auto Workers
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United Food & Commercial Workers
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United Farm Workers
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Union of Needletrades, Industrial, and Textile Employees - Hotel Employees and Restaurant Employees
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International Union
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United Steelworkers
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United Union of Roofers, Waterproofers & Allied Workers
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Utility Workers Union of America