| Business | Phone |
| Afscme 207 Main St, Nashua 3060 | (603) 882-0637 |
| American Postal Workers Union 10 Celina Ave, Nashua 3063 | (603) 881-7786 |
| Local 789 98 Pine Hill Rd, Nashua 3063 | (603) 000-1111 |
| Local 789 Spit Brook Rd, Nashua 3060 | (603) 888-4200 |
| Nashua Fire Fighters Assn 7 Taggart Dr, Nashua 3060 | (603) 888-4200 |
| Nashua Teacher's Union 7 Taggart Dr # C, Nashua 3060 | (603) 888-7544 |
| National Air Traffic Assoc 35 Northeastern Blvd, Nashua 3062 | (603) 595-1978 |