| Business | Phone |
| Carpenter's Local 2441 W Water St, Port Huron 48060 | (810) 985-7969 |
| Mueller Brass 2212 Lapeer Ave, Port Huron 48060 | (810) 982-4301 |
| Painters 2441 W Water St, Port Huron 48060 | (810) 982-9921 |
| Port Huron Education Assn 511 Fort St 400, Port Huron 48060 | (810) 987-6710 |
| Teamsters Local Union 2441 W Water St, Port Huron 48060 | (810) 985-8127 |
| Uaw Sub Regional Office 3520 Military St, Port Huron 48060 | (810) 982-4891 |
| St Clair County Education Assn 511 Fort St 400, Port Huron 48060 | (810) 987-8668 |