Local Unions
- American Federation of State County and Municipal Employees – Local 796
- American Postal Workers Union (APWU) – Local 178
- Brotherhood of Locomotive Engineers and Trainmen – Local 175
- International Association of Fire Fighters (IAFF) – Local 316
- National Association of Letter Carriers (NALC) – Local 173
- United Auto Workers (UAW) – Local 578
- United Brotherhood of Carpenters & Joiners of America – Local 2832
- United Faculty and Staff of Oshkosh (UFSO) – Local 6506
- United Food and Commercial Workers – Local 1473
- United Steelworkers – Local 2-169