| Business | Phone |
| American Federation Government 5337 Huberville Ave, Dayton 45431 | (937) 254-2343 |
| Communications Workers-America 5030 Linden Ave, Dayton 45432 | (937) 256-4322 |
| International Union-Electrical 1675 Woodman Dr, Dayton 45432 | (937) 253-4269 |
| Iue Cwa Local 755 1675 Woodman Dr, Dayton 45432 | (937) 253-3565 |
| Local 141 1645 Seabrook Rd, Dayton 45432 | (937) 254-4499 |
| National Assn-Letter Carriers 1860 Radio Rd, Dayton 45431 | (937) 252-0891 |
| American Postal Workers Union 21 N Beckel St, Dayton 45403 | (937) 224-7912 |
| American Postal Workers Union 7211 N Main St # 4, Dayton 45415 | (937) 277-2798 |
| Bennington Piergies & Spalla 150 Heid Ave, Dayton 45404 | (937) 233-8572 |
| Bricklayers 3366 Successful Way, Dayton 45414 | (937) 237-5178 |
| Carpenters Local 6550 Poe Ave, Dayton 45414 | (937) 264-2048 |
| Dayton Firefighters Union 145 Warren St, Dayton 45402 | (937) 333-1715 |
| Dayton Newspaper Guild Local 40 S Main St, Dayton 45402 | (937) 222-2985 |
| Uaw 1543 Alwildy Ave, Dayton 45408 | (937) 228-2142 |
| Uaw 22 Jasper St, Dayton 45409 | (937) 223-7657 |
| Uaw 762 W Stewart St, Dayton 45408 | (937) 461-6051 |
| United Auto Workers 1155 Lyons Rd, Dayton 45458 | (937) 433-1524 |
| United Food & Commercial Wrkrs 4127 E 2nd St, Dayton 45403 | (937) 254-3394 |
| United Steelworkers Of America 504 N Findlay St, Dayton 45404 | (937) 228-6500 |
| Electricians Employee Benefits 6550 Poe Ave, Dayton 45414 | (937) 264-2058 |
| Teamsters Local Union 2719 Armstrong Ln, Dayton 45414 | (937) 278-5781 |
| Sheet Metal Workers Union 4949 Northcutt Pl, Dayton 45414 | (937) 274-5881 |
| Heat & Frost Insulators 2002 Richard St, Dayton 45403 | (937) 256-6811 |
| Roofer's Union 1200 E 2nd St, Dayton 45403 | (937) 228-2464 |
| Iatse 125 E 1st St, Dayton 45402 | (937) 223-2642 |
| Ibew 1250 W Dorothy Ln, Dayton 45409 | (937) 294-0243 |
| Ibew 313 S Jefferson St, Dayton 45402 | (937) 224-5085 |
| Ibew 6550 Poe Ave, Dayton 45414 | (937) 898-4239 |
| International Association-Mach 60 Commerce Park Dr, Dayton 45404 | (937) 233-9007 |
| International Union Electronic 3461 Office Park Dr, Dayton 45439 | (937) 294-1491 |
| International Union-Oper Engrs 6051 N Dixie Dr, Dayton 45414 | (937) 890-5914 |
| Intl Union Of Elec Local 801 313 S Jefferson St, Dayton 45402 | (937) 224-7658 |
| Iron Workers Union 606 Hillrose Ave, Dayton 45404 | (937) 222-1622 |
| Iue 313 S Jefferson St, Dayton 45402 | (937) 222-8403 |
| Iue-Cwa Automotive Conf Board 2360 W Dorothy Ln # 201, Dayton 45439 | (937) 294-7813 |
| Opcmia 2951 Bluefield Ave, Dayton 45414 | (937) 279-0262 |
| Painters Local Union 2621 E 3rd St, Dayton 45403 | (937) 254-2251 |
| Plumbers & Pipe Fitters 1200 E 2nd St, Dayton 45403 | (937) 461-5652 |
| Laborers International Union 2228 E 3rd St, Dayton 45403 | (937) 254-6172 |
| Millwright Local Union 830 E 5th St, Dayton 45402 | (937) 223-3472 |