| Business | Phone |
| Pressman Assistants 295 Main St # 828, Buffalo 14203 | (716) 854-8272 |
| Afl-Cio Council-Buffalo 295 Main St # 832, Buffalo 14203 | (716) 852-0375 |
| Afl-Cio Hospital & Nursing 250 Delaware Ave, Buffalo 14202 | (716) 842-0596 |
| Afscme 360 Delaware Ave # 100, Buffalo 14202 | (716) 852-1310 |
| Sheet Metal Workers # 71 24 Liberty Ave, Buffalo 14215 | (716) 835-8836 |
| Amalgamated Clothing Workers 3871 Harlem Rd, Buffalo 14215 | (716) 836-7129 |
| Amalgamated Local No 55 35 George Karl Blvd, Buffalo 14221 | (716) 631-7282 |
| Amalgamated Transit Union 2154 Genesee St, Buffalo 14211 | (716) 893-3551 |
| American Federation Of Grain 625 Delaware Ave # 401, Buffalo 14202 | (716) 881-2293 |
| American Federation-State Empl 257 Elmwood Ave, Buffalo 14222 | (716) 847-0456 |
| American Postal Workers Union 275 Paderewski Dr, Buffalo 14212 | (716) 891-7427 |
| Apprenticeship/Journeymen 585 Aero Dr, Buffalo 14225 | (716) 565-0112 |
| Bookbinder's 295 Main St, Buffalo 14203 | (716) 856-9759 |
| Brotherhood-Locomotive Engrs 1807 Elmwood Ave # 124, Buffalo 14207 | (716) 876-2303 |
| Buffalo Council Of Supervisors 875 Elmwood Ave, Buffalo 14222 | (716) 881-7310 |
| Buffalo Laborers Training Fund 1370 Seneca St, Buffalo 14210 | (716) 825-0883 |
| Buffalo Newspaper Guild 726 Exchange St # 510, Buffalo 14210 | (716) 856-2828 |
| Buffalo Teachers Federation 271 Porter Ave, Buffalo 14201 | (716) 881-5400 |
| Teamsters 656 Englewood Ave, Buffalo 14223 | (716) 836-4900 |
| Civil Service Employees Assn 120 Pineview Dr, Buffalo 14228 | (716) 691-6555 |
| Communications Workers-America 329 Southside Pkwy, Buffalo 14220 | (716) 828-1133 |
| Communications Workers-America 3719 Union Rd # 122, Buffalo 14225 | (716) 685-5015 |
| Communications Workers-America 3775 Genesee St, Buffalo 14225 | (716) 633-2211 |
| Communications Workers-America 505 Delaware Ave, Buffalo 14202 | (716) 816-1168 |
| Csea 120 Pineview Dr, Buffalo 14228 | (716) 886-0391 |
| Csea 400 Forest Ave, Buffalo 14213 | (716) 885-2051 |
| Csea 50 Delaware Ave, Buffalo 14202 | (716) 852-2732 |
| Uaw 3800 Lake Shore Rd, Buffalo 14219 | (716) 823-1782 |
| United Auto Workers 1001 E Delavan Ave, Buffalo 14215 | (716) 897-2464 |
| United Auto Workers 811 Tonawanda St, Buffalo 14207 | (716) 876-1016 |
| United Auto Workers Region 1101 E Delavan Ave, Buffalo 14215 | (716) 891-4135 |
| United Auto Workers Region 9 2939 Niagara St, Buffalo 14207 | (716) 873-4715 |
| United Auto Workers Region 9 892 Main St, Buffalo 14202 | (716) 631-7282 |
| United Auto Workers Union 2360 Wehrle Dr, Buffalo 14221 | (716) 630-1615 |
| United Cerebal Palsy Employee 3475 Genesee St, Buffalo 14225 | (716) 632-6292 |
| United Steelworkers Of America 425 Military Rd, Buffalo 14207 | (716) 873-4361 |
| United University Professions 102 Fargo, Buffalo 14261 | (716) 645-2013 |
| District Council #4 585 Aero Dr, Buffalo 14225 | (716) 565-0303 |
| Federation-Nurses & Health Pro 270 Essjay Rd, Buffalo 14221 | (716) 634-7137 |
| William Smith Iuoe Local 409 73 Pawnee Pkwy, Buffalo 14210 | (716) 822-4725 |
| Graphic Communications Intl 2185 Clinton St, Buffalo 14206 | (716) 822-0734 |
| International Union-Elevator 3527 Harlem Rd # 10a, Buffalo 14225 | (716) 833-5528 |
| Iron Workers Shopmen 1560 Harlem Rd # 11, Buffalo 14206 | (716) 895-5052 |
| Iuoe Local 409 600 Highgate Ave, Buffalo 14215 | (716) 834-2191 |
| Local 4 Insurance & Pension 3871 Harlem Rd # 13, Buffalo 14215 | (716) 836-7810 |
| Mail Handlers 3254 Genesee St, Buffalo 14225 | (716) 895-0300 |
| National Assn-Letter Carriers 4845 Union Rd, Buffalo 14225 | (716) 631-3940 |
| National Education Assn Of Ny 1321 Millersport Hwy, Buffalo 14221 | (716) 635-9298 |
| New York State Afl Cio 3000 Genesee St # 215, Buffalo 14225 | (716) 896-0600 |
| Office & Professional Employee 2175 William St, Buffalo 14206 | (716) 893-0100 |