| Business | Phone |
| Adecco 5300 Westview Dr # 304, Frederick 21703 | (301) 631-9000 |
| Aerotek 92 Thomas Johnson Dr, Frederick 21702 | (301) 631-0606 |
| Compu Job Locators 5808 Stoney Creek Dr, Frederick 21703 | (301) 663-0198 |
| Donna Kaye Personnel 1425 W Patrick St # C, Frederick 21702 | (301) 694-7700 |
| Evantes Inc 103 S Carroll St # 2e, Frederick 21701 | (301) 668-2065 |
| Expert Employment Svc Inc Frederick 21701 | (301) 620-1800 |
| I Hire Llc 38 S Market St # 200, Frederick 21701 | (301) 668-4424 |
| Job Service 67 Thomas Johnson Dr, Frederick 21702 | (301) 694-2180 |
| Snelling & Snelling Inc 258 W Patrick St, Frederick 21701 | (301) 695-6696 |
| Telesec Corestaff 10 N Jefferson St # 310a, Frederick 21701 | (301) 662-0392 |