American Federation of State, County and Municipal Employees (AFSCME) District Council 32
American Federation of Teachers, Local 212
International Alliance of Theatrical and Stage Employees (IATSE), Local 18 and Local 470
International Brotherhood of Electrical Workers (IBEW), Locals 158, 388, 577
International Union of Operating Engineers (IUOE), Local 420
National Association of Letter Carriers, Pioneer Branch 2
SEIU Wisconsin
United Automobile, Aerospace and Agricultural Implement Workers of America (UAW), Local 833
United Food & Commercial Workers (UFCW), Local 1473
United Steel, Paper and Forestry, Rubber, Manufacturing, Energy, Allied Industrial and Service Workers International Union (USW), Various Locals