| Business | Phone |
| Amalgamated Transit Union 955 Connecticut Ave # 1227, Bridgeport 6607 | (203) 333-5544 |
| American Federation-State Empl 2320 Main St, Bridgeport 6606 | (203) 368-0378 |
| American Postal Workers Union 50 Ridgefield Ave, Bridgeport 6610 | (203) 333-4685 |
| Teamsters Health Svc 1139 Fairfield Ave, Bridgeport 6605 | (203) 366-5849 |
| Bridgeport Fire Fighters Union 30 Congress St, Bridgeport 6604 | (203) 368-3733 |
| Bridgeport Police Union 1159 300 Congress St, Bridgeport 6604 | (203) 336-3711 |
| Carpenters Union 25 Burr Ct, Bridgeport 6605 | (203) 334-0644 |
| Greater Bridgeport Transit Atu 269 Federal St, Bridgeport 6606 | (203) 333-7663 |
| Ibpo 3510 Main St, Bridgeport 6606 | (203) 371-6170 |
| Ibt Health Svc 192 Fairfield Ave, Bridgeport 6604 | (203) 333-7203 |
| Laborers International Union 269 Federal St, Bridgeport 6606 | (203) 335-7943 |
| International Union-Electrical 269 Federal St, Bridgeport 6606 | (203) 366-4597 |