| Business | Phone |
| Alabama Carpenters Regl Cncl 4924 Messer Airport Hwy, Birmingham 35212 | (205) 592-0708 |
| Amalgamated Transit Union 3820 3rd Ave S # 104, Birmingham 35222 | (205) 591-8999 |
| American Federation-Teachers 1900 20th Ave S # 201, Birmingham 35209 | (205) 933-1124 |
| American Postal Workers Union 2313 4th Ave N, Birmingham 35203 | (205) 322-8080 |
| Birmingham Iron Workers Train 2828 4th Ave S, Birmingham 35233 | (205) 251-3372 |
| Boilermakers Union 501 Huffman Rd, Birmingham 35215 | (205) 836-4277 |
| Bricklayers Local 5373 1st Ave N, Birmingham 35212 | (205) 595-3264 |
| Mail Handlers Union Local 317 216 Oporto Madrid Blvd N, Birmingham 35206 | (205) 836-8941 |
| Communications Workers-America 2700 Highway 280 S # 207, Birmingham 35223 | (205) 871-2036 |
| Ibew 100 Concourse Pkwy # 300, Birmingham 35244 | (205) 444-9977 |
| Ibew 1018 18th St S, Birmingham 35205 | (205) 933-8457 |
| Ibew 845 Gadsden Hwy, Birmingham 35235 | (205) 833-0909 |
| International Union-Elevator 5221 1st Ave N, Birmingham 35212 | (205) 591-4185 |
| Iron Workers 2828 4th Ave S, Birmingham 35233 | (205) 323-4551 |
| Labor Local Union 1229 22nd St N, Birmingham 35234 | (205) 251-8810 |
| Laborers District Counsel 2522 Valleydale Rd # A, Birmingham 35244 | (205) 991-9908 |