| Business | Phone |
| Intl Brotherhood-Boilermakers 1239 N Buys Rd, Muskegon 49445 | (231) 744-6668 |
| Muskegon Area Local 800 1st St, Muskegon 49440 | (231) 722-1414 |
| Afl-Cio 3120 S Getty St, Muskegon 49444 | (231) 733-7735 |
| Michigan Corrections 2400 S Sheridan Dr, Muskegon 49442 | (231) 777-3014 |
| United Paper Makers & Workers 2341 Lakeshore Dr, Muskegon 49441 | (231) 755-4255 |
| Service Employees' Intl Union 490 W Western Ave, Muskegon 49440 | (231) 722-6303 |