| Large Companies Category | |
| Rank | Company Name |
| 1 | Edward Jones |
| 2 | Ernst & Young LLP |
| 3 | CEFCU |
| 4 | Delnor-Community Health System |
| 5 | Crowe Chizek and Company LLC |
| 6 | Deloitte and Touche USA LLP |
| 7 | Quest Diagnostics |
| 8 | Erickson Retirement Communities, LLC |
| 9 | Methodist Medical Center of Illinois |
| 10 | Grant Thornton LLP |
| Small/Medium Companies Category | |
| Rank | Company Name |
| 1 | DiGiovine Hnilo Jordan + Johnson Ltd. |
| 2 | Tasty Catering |
| 3 | iCyt |
| 4 | Laurus Strategies |
| 5 | Wine Sergi & Co., LLC |
| 6 | Duke Realty Corporation |
| 7 | Impact Networking, L.L.C. |
| 8 | ChapterHouse, LLC |
| 9 | Comprehensive Therapeutics, Ltd. |
| 10 | Levenfeld Pearlstein, LLC |
| 11 | Paramount Staffing |
| 12 | M. A. Mortenson Company |
| 13 | Rust-Oleum Corporation |
| 14 | National Futures Association |
| 15 | FCL Builders, Inc. |
| 16 | Engineering Enterprises, Inc. |
| 17 | Paylocity |
| 18 | The Mueller Companies |
| 19 | Rippinger Financial Group of Companies |
| 20 | Ocean Tomo, LLC |
2007 "Best Places to Work in Illinois"
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