| Business | Phone |
| Amalgamated Local 455 Uaw 110 Florence St, Saginaw 48602 | (989) 799-4341 |
| American Postal Workers Union 3209 Shattuck Rd, Saginaw 48603 | (989) 793-8080 |
| Carpenters 1400 W Genesee Ave, Saginaw 48602 | (989) 753-1487 |
| Communications Workers-America 1614 Mershon St, Saginaw 48602 | (989) 793-4108 |
| Iron Workers 811 Bridgeview S, Saginaw 48604 | (989) 755-9091 |
| Laborers 345 E Morley Dr, Saginaw 48601 | (989) 752-6146 |
| Michigan Education Assn 1800 S River Rd, Saginaw 48609 | (989) 781-2540 |
| Uaw 1911 Bagley St, Saginaw 48601 | (989) 755-0569 |
| Uaw 500 Shattuck Rd, Saginaw 48604 | (989) 753-2475 |
| United Auto Workers 1601 N 6th Ave, Saginaw 48601 | (989) 753-4489 |
| United Automobile Workers 2104 Farmer St, Saginaw 48601 | (989) 777-2630 |
| United Dairy & Bakery Workers 2329 N Michigan Ave, Saginaw 48602 | (989) 752-4713 |
| United Plant Guard Workers 2104 Farmer St, Saginaw 48601 | (989) 746-9991 |
| Utility Workers Union-America 1400 W Genesee Ave, Saginaw 48602 | (989) 754-7984 |
| Teamsters 805 Bridgeview S, Saginaw 48604 | (989) 771-9000 |
| Teamsters Local Union 6165 Bay Rd, Saginaw 48604 | (989) 797-6000 |
| Saginaw Education Assn 1311 Gratiot Ave, Saginaw 48602 | (989) 799-4030 |
| Plumbers & Steamfitters Local 6705 Weiss St, Saginaw 48603 | (989) 799-5261 |
| Pattern Makers Assn 1400 W Genesee Ave, Saginaw 48602 | (989) 752-0039 |