| Business | Phone |
| Ibew 106 Freeport Rd, Butler 16002 | (724) 287-2104 |
| Ibew 184 New Castle Rd, Butler 16001 | (724) 450-0520 |
| Ibew 197 New Castle Rd, Butler 16001 | (724) 284-1417 |
| Laborers International Union 306 E Brady St, Butler 16001 | (724) 287-4476 |
| Plumbing & Steam Fitters Local 405 Hansen Ave, Butler 16001 | (724) 287-1794 |
| Uaw 602 Evans City Rd, Butler 16001 | (724) 482-2124 |
| United Steelworkers Of America 121 W Jefferson St, Butler 16001 | (724) 285-4466 |