| Business | Phone |
| Afl-Cio 5418 S 27th St 1, Omaha 68107 | (402) 734-1300 |
| Aftra Omaha Local 3000 Farnam St, Omaha 68131 | (402) 346-8384 |
| American Postal Workers Union 1124 Pacific St, Omaha 68108 | (402) 345-4877 |
| American Postal Workers Union 1270 S 13th St, Omaha 68108 | (402) 422-0856 |
| Bctgm 3023 1/2 Leavenworth St, Omaha 68105 | (402) 341-1159 |
| Bricklayers Union 4046 Vinton St, Omaha 68105 | (402) 558-5665 |
| Carpenters 9615 Ida St, Omaha 68122 | (402) 345-3558 |
| Communications Workers-America 10730 Pacific St 209, Omaha 68114 | (402) 393-3603 |
| Communications Workers-America 1920 S 44th St, Omaha 68105 | (402) 556-6400 |
| Communications Workers-America 8998 L St, Omaha 68127 | (402) 558-0573 |
| Construction Laborers 11000 N 72nd St, Omaha 68122 | (402) 573-7878 |
| Contractors Laborers Teamsters 10334 Ellison Cir, Omaha 68134 | (402) 491-3751 |
| Teamsters Union 4349 S 90th St, Omaha 68127 | (402) 331-0550 |
| Transport Workers 5418 S 27th St 7, Omaha 68107 | (402) 734-7851 |
| United Food & Commercial Wrkrs 2502 Leavenworth St, Omaha 68105 | (402) 342-5417 |
| Steamfitters Local 13505 B St, Omaha 68144 | (402) 333-5859 |
| Service Employees Local 5418 S 27th St, Omaha 68107 | (402) 733-8775 |
| Sheet Metal Workers 3333 S 24th St, Omaha 68108 | (402) 330-3383 |
| Pro Firefighters Of Omaha 6005 Grover St, Omaha 68106 | (402) 551-5770 |
| Plumbers Local Union 4801 F St, Omaha 68117 | (402) 734-6274 |
| Omaha Education Assn 4202 S 57th St, Omaha 68117 | (402) 346-0400 |
| Septemberfest Office 3000 Farnam St, Omaha 68131 | (402) 346-4800 |
| Omaha Musicians Assn 4535 Leavenworth St 124, Omaha 68106 | (402) 553-5818 |
| Omaha Police Union Local 101 13445 Cryer Ave, Omaha 68144 | (402) 393-6191 |
| Operating Engineers 4660 S 60th Ave, Omaha 68117 | (402) 733-1600 |
| Painters Local Union 4523 Military Ave, Omaha 68104 | (402) 556-9373 |
| Nebraska Public Employees 3000 Farnam St, Omaha 68131 | (402) 346-4011 |
| Nsea Omaha Area 4204 S 57th St, Omaha 68117 | (402) 731-0800 |
| Millwrights & Machinery Erctrs 9615 Ida St, Omaha 68122 | (402) 345-4476 |
| Graphic Communications Omaha 68106 | (402) 551-9100 |
| Ibew 13306 1/2 Stevens St, Omaha 68137 | (402) 895-7120 |
| Ibew 13336 C St, Omaha 68144 | (402) 334-1880 |
| Ibew 4046 Vinton St, Omaha 68105 | (402) 556-2488 |
| Ibew 6004 Pine St, Omaha 68106 | (402) 561-6788 |
| Ibew 8946 L St, Omaha 68127 | (402) 331-8147 |
| Ibew 8960 L St, Omaha 68127 | (402) 592-2872 |
| Nebraska Operating Engineers 11404 N 72nd St, Omaha 68122 | (402) 571-4939 |
| Iron Workers Local 14515 Industrial Rd, Omaha 68144 | (402) 333-0276 |
| Iternational Union Of Op Eng 4660 S 60th Ave, Omaha 68117 | (402) 733-0845 |
| Machinists & Aerospace Workers 14515 Industrial Rd, Omaha 68144 | (402) 330-7870 |
| Mail Handlers 3035 Harney St 302, Omaha 68131 | (402) 345-9564 |