- Asbesto's Workers Union 41
- Bricklayers Union
- Carpenter's Local 232
- Graphic Communications Union
- I N Regional Council-Carpentrs
- International Union-Oper Engrs
- International Union-Oper Engrs
- Iron Workers
- Northeast Indiana Central Lab
- PACE International Union
- Painter's Local Union
- Plasterers & Cement Masons
- Teamsters Local Union
- United Steel Workers Local 903
- Worker's Project Inc
