| Business | Phone |
| Alexandria Firefighters Inc 4600 Duke St, Alexandria 22304 | (703) 823-3473 |
| Construction & Master Laborers 3660 Wheeler Ave, Alexandria 22304 | (703) 504-6166 |
| Federation Of State Boards 509 Wythe St, Alexandria 22314 | (703) 299-3100 |
| Usgoa Local # 43 50 S Pickett St, Alexandria 22304 | (703) 823-5684 |
| Transport Workers Local 510 3145 Mount Vernon Ave, Alexandria 22305 | (703) 683-3131 |
| United Electrical Radio & Mach 1800 Diagonal Rd # 600, Alexandria 22314 | (703) 684-3123 |
| United Electrical Workers 1800 Diagonal Rd, Alexandria 22314 | (703) 299-5120 |
| Plumber's & Pipefitter's Natl 103 Oronoco St, Alexandria 22314 | (703) 739-9020 |
| National Assn-Govt Employees 317 S Patrick St, Alexandria 22314 | (703) 519-0300 |
| National Postal Policy Counsel 600 Cameron St, Alexandria 22314 | (703) 340-1666 |
| United Brotherhood-Carpenters 6060 Franconia Rd, Alexandria 22310 | (703) 922-8755 |
| Working People Alexandria 22309 | (703) 440-1100 |
| Washington Lodge 8023 Imperial St, Alexandria 22309 | (703) 799-8339 |
| Nalc Branch 567 2059 Huntington Ave, Alexandria 22303 | (703) 960-3770 |