| Business | Phone |
| American Federation-State Empl 6 W High St, Springfield 45502 | (937) 325-6998 |
| Carpenter's Local 240 Ludlow Ave, Springfield 45505 | (937) 322-3510 |
| Communications Workers-America 240 Ludlow Ave, Springfield 45505 | (937) 322-2227 |
| Iaff 31 E High St, Springfield 45502 | (937) 322-6200 |
| Teamsters 832 Warder St, Springfield 45503 | (937) 325-2419 |
| Uaw 1601 W Main St, Springfield 45504 | (937) 324-1070 |
| Uaw 2170 W 1st St, Springfield 45504 | (937) 323-7923 |
| Uaw 3671 Urbana Rd, Springfield 45502 | (937) 390-3327 |
| Uaw Local 658 200 Eagle City Rd, Springfield 45502 | (937) 399-3082 |
| Uawcio 2170 W 1st St, Springfield 45504 | (937) 323-4818 |