| Business | Phone |
| Iam 490 W Western Ave, Muskegon 49440 | (231) 722-0050 |
| West Michigan Labor Council 490 W Western Ave, Muskegon 49440 | (231) 725-7721 |
| Port City Cio Building Assn 490 W Western Ave, Muskegon 49440 | (231) 725-8290 |
| United Auto Workers 490 W Western Ave, Muskegon 49440 | (231) 722-7778 |
| Teamsters 3120 S Getty St, Muskegon 49444 | (231) 733-1164 |
| Uaw Int'L Region I-D 490 W Western Ave, Muskegon 49440 | (231) 722-2362 |