| Business | Phone |
| Amalgamated Transit 1593 1703 N Tampa St # 7, Tampa 33602 | (813) 229-6272 |
| Amalgamated Transit Union 1912 N Himes Ave, Tampa 33607 | (813) 877-0402 |
| Amalgamated Transit Union 1464 1703 N Tampa St, Tampa 33602 | (813) 223-7561 |
| American Federation 9280 Bay Plaza Blvd # 702, Tampa 33619 | (813) 626-5554 |
| American Federation Government 13000 Bruce B Downs Blvd, Tampa 33612 | (813) 972-7520 |
| American Postal Workers Union 4409 W Alva St, Tampa 33614 | (813) 876-1697 |
| American Postal Workers Union 8001 N Dale Mabry Hwy # 301, Tampa 33614 | (813) 932-6136 |
| Asbestos Workers 7930 Highway 301 N, Tampa 33637 | (813) 985-3067 |
| Boiler Makers Union 9725 E Us Highway 92, Tampa 33610 | (813) 626-4105 |
| Twu 4013 W Linebaugh Ave, Tampa 33624 | (813) 960-9050 |
| West Central Florida Fdrtn 10108 E Us Highway 92, Tampa 33610 | (813) 740-2233 |
| Teamsters' & Chauffeurs' 79 5818 E Dr Martin Luther Kng Jr, Tampa 33619 | (813) 621-1391 |
| Tampa Firefighters Local 754 3116 N Boulevard, Tampa 33603 | (813) 229-7540 |
| Sheet Metal Workers 5619 N 50th St, Tampa 33610 | (813) 628-0021 |
| Plumbers Pipefitters & Air 4923 W Cypress St, Tampa 33607 | (813) 636-0123 |
| National Assn-Letter Carriers 3003 W Cypress St, Tampa 33609 | (813) 875-0599 |
| National Federation-Employees 8207 Hillsborough Loop Dr, Tampa 33621 | (813) 840-0920 |
| Millwrights & Machinery 9711 E Us Highway 92, Tampa 33610 | (813) 626-1119 |
| Millwrights Local Union 9711 E Us Highway 92, Tampa 33610 | (813) 620-0175 |
| Marine Engineers Beneficial 1509 S 22nd St, Tampa 33605 | (813) 247-7223 |
| Masters Mates & Pilots 202 S 22nd St # 205, Tampa 33605 | (813) 247-2164 |
| Carpenter's Local Union 7930 Highway 301 N, Tampa 33637 | (813) 985-5555 |
| Florida Gulf Coast Building 10201 E Us Highway 92, Tampa 33610 | (813) 623-1512 |
| Hillsborough County Fire Fghtr 104 W Country Club Dr, Tampa 33612 | (813) 935-3275 |
| Hillsborough Schools Employee 11700 N 58th St # C, Tampa 33617 | (813) 985-6989 |
| Ibew 10108 E Us Highway 92, Tampa 33610 | (813) 621-2418 |
| Ibew 5621 Harney Rd, Tampa 33610 | (813) 621-6451 |
| Ibew 6603 E Chelsea St, Tampa 33610 | (813) 626-5136 |
| International Alliance-Thtrcl 7211 N Dale Mabry Hwy # 209, Tampa 33614 | (813) 877-2788 |
| International Chemical Wrkrs 5020 S 50th St, Tampa 33619 | (813) 677-1921 |
| International Longshoremen's 1004 N Nebraska Ave, Tampa 33602 | (813) 228-9140 |
| International Longshoremen's 1232 E Cass St, Tampa 33602 | (813) 223-4729 |
| International Painter Loc 88 3818 W Bay Vista Ave, Tampa 33611 | (813) 835-5888 |
| International Union 12610 Henderson Rd, Tampa 33625 | (813) 265-0410 |
| International Union-Elevator 8406 Highway 301 N, Tampa 33637 | (813) 988-0950 |
| International Union-Oper Engrs 10201 E Us Highway 92, Tampa 33610 | (813) 626-4161 |
| International Union-Oper Engrs 9340 N 56th St # 120, Tampa 33617 | (813) 985-4492 |
| Intl Union-Bricklayers Local 1 4502 W Dr Martin Luther Kng Jr, Tampa 33614 | (813) 876-4738 |
| Iron Workers 10201 E Us Highway 92, Tampa 33610 | (813) 623-1515 |
| Teamsters' & Chauffeurs' 79 5818 E Dr Martin Luther Kng Jr, Tampa 33619 | (813) 621-1391 |
| Carpenter's Local Union 7930 Highway 301 N, Tampa 33637 | (813) 985-5555 |