| Business | Phone |
| Central Management Personnel 100 W Randolph St, Chicago 60601 | (312) 793-2565 |
| Central Management Svc 1129 S Hermitage Ave, Chicago 60612 | (312) 633-1818 |
| Central Management Svc 160 N La Salle St # N500, Chicago 60601 | (312) 814-1160 |
| Central Management Svc 7075 W Forest Preserve Ave, Chicago 60634 | (773) 736-5290 |
| Elections Board 100 W Randolph St, Chicago 60601 | (312) 814-6440 |
| Civil Service Commission 160 N La Salle St 901, Chicago 60601 | (312) 814-4738 |
| Staff Development 100 E Randolph St 10-3, Chicago 60601 | (312) 793-3100 |