| Business | Phone |
| International Union-Oper Engrs 44250 Division St # A, Lancaster 93535 | (661) 942-1175 |
| Seiu Health Care Office 528 W Milling St, Lancaster 93534 | (661) 948-2616 |
| Teamsters Local Union 45122 Yucca Ave, Lancaster 93534 | (661) 942-9501 |
| United Aerospace Workers 315 W Pondera St, Lancaster 93534 | (661) 951-7874 |
| Uaw Labor Employment 1420 W Avenue I, Lancaster 93534 | (661) 951-9004 |