| Business | Phone |
| Laborers International Union 29 Rockland St, Fitchburg 1420 | (978) 342-3161 |
| Laborers International Union 434 Water St, Fitchburg 1420 | (978) 342-9067 |
| Atu Local 690 163 Prichard St # A, Fitchburg 1420 | (978) 342-7799 |
| Fitchburg Teachers Assoc 232 Cleghorn St, Fitchburg 1420 | (978) 342-5641 |