| Chicago Transit Authority ORANGE LINE SCHEDULED TRANSIT OPERATIONS IL | Transportation & Warehousing | 0 | — | F |
| Chicago Transit Authority OVERHAUL MODIFICATION IL | Transportation & Warehousing | 0 | — | D |
| Chicago Transit Authority POWER MAINTENANCE IL | Transportation & Warehousing | 0 | — | F |
| Chicago Transit Authority PURCHASING, GM IL | Transportation & Warehousing | 0 | — | A |
| Chicago Transit Authority RAIL INSTRUCTION IL | Transportation & Warehousing | 0 | — | F |
| Chicago Transit Authority RAIL STATION MGT SUPPORT B P IL | Transportation & Warehousing | 0 | — | B |
| Chicago Transit Authority RAIL STATION MGT SUPPORT ELEVATED IL | Transportation & Warehousing | 0 | — | D |
| Chicago Transit Authority RAIL STATION MGT SUPPORT RYP IL | Transportation & Warehousing | 0 | — | D |
| Chicago Transit Authority RAIL STOCKROOMS IL | Transportation & Warehousing | 0 | — | A |
| Chicago Transit Authority RCA 98TH RED LINE IL | Transportation & Warehousing | 0 | — | F |
| Chicago Transit Authority RCA DESPLAINES BLUE LINE IL | Transportation & Warehousing | 0 | — | F |
| Chicago Transit Authority RCA HOWARD RED LINE IL | Transportation & Warehousing | 0 | — | F |
| Chicago Transit Authority RCA KIMBALL BROWN LINE IL | Transportation & Warehousing | 0 | — | A |
| Chicago Transit Authority RCA MIDWAY ORANGE LINE IL | Transportation & Warehousing | 0 | — | A |
| Chicago Transit Authority RCA ROSEMONT BLUE LINE IL | Transportation & Warehousing | 0 | — | A |
| Chicago Transit Authority RED LINE N SCHEDULED TRANSIT OPERATIONS IL | Transportation & Warehousing | 0 | — | F |
| Chicago Transit Authority RED LINE S SCHEDULED TRANSIT OPERATIONS IL | Transportation & Warehousing | 0 | — | F |
| Chicago Transit Authority RED PURPLE MODERNIZATION IL | Transportation & Warehousing | 0 | — | F |
| Chicago Transit Authority RED YELLOW PURPLE LINE SUPPORT IL | Transportation & Warehousing | 0 | — | C |
| Chicago Transit Authority ROSEMONT MAINTENANCE IL | Transportation & Warehousing | 0 | — | C |
| Chicago Transit Authority SHEET METAL MAINTENANCE IL | Transportation & Warehousing | 0 | — | F |
| Chicago Transit Authority SIGNAL MAINTENANCE IL | Transportation & Warehousing | 0 | — | D |
| Chicago Transit Authority SUBSTATION MAINTENANCE IL | Transportation & Warehousing | 0 | — | D |
| Chicago Transit Authority SUPPLY CHAIN OPERATIONS, GM IL | Transportation & Warehousing | 0 | — | A |
| Chicago Transit Authority TEMPORARY MEDICAL DISABILITY IL | Transportation & Warehousing | 0 | — | F |
| Chicago Transit Authority TORTS IL | Transportation & Warehousing | 0 | — | A |
| Chicago Transit Authority TRACK MAINTENANCE IL | Transportation & Warehousing | 0 | — | F |
| Chicago Transit Authority UTILITY SERVICE IL | Transportation & Warehousing | 0 | — | D |
| Chicago Tribune - Production Facility IL | — | 0 | — | — |
| Chicago Vegan Foods IL | Manufacturing | 0 | — | A |
| CHICAGO WHITE METAL CASTING INC IL | Manufacturing | 0 | — | F |
| Chicago White Sox AL | Arts & Entertainment | 0 | — | F |
| Chicago White Sox AZ | Arts & Entertainment | 0 | — | A |
| Chicago White Sox NC | Arts & Entertainment | 0 | — | D |
| CHICAGO WHITE SOX, LTD. IL | Arts & Entertainment | 2 | $75,250 | B |
| Chicago Yatch Club IL | — | 0 | — | — |
| Chicago's Taste Authority MN | — | 0 | — | — |
| Chicagoland Chamber of Commerce IL | Other Services | 1 | $49,800 | — |
| CHICAGOLAND EYE CONSULTANTS, SC IL | Healthcare & Social Assistance | 0 | — | A |
| Chicagoland Infectious Disease, PC IL | Healthcare & Social Assistance | 1 | $90,000 | — |
| CHICAGOLAND PAVING IL | Construction | 0 | — | F |
| Chicagoland Quad Cities Express IL | Transportation & Warehousing | 0 | — | A |
| Chick Machine Company, LLC PA | Manufacturing | 0 | — | A |
| Chick Master Incubator Company OH | — | 0 | — | — |
| Chick Workholding Solutions, Inc. PA | Manufacturing | 0 | — | A |
| Chick-fil-A CA | — | 0 | — | — |
| Chick-fil-A IA | Accommodation & Food Services | 0 | — | F |
| Chick-fil-A MD | — | 0 | — | — |
| Chick-fil-A PA | — | 0 | — | — |
| Chick-Fil-A (N. Collins St. Plant) TX | — | 0 | — | — |