Aon Corp. (ticker symbol AON) calls itself the leading global provider of risk management services, insurance and reinsurance brokerage and human resources consulting and outsourcing. The Chicago-based company's presence in Central Florida expanded greatly in 2010 when it acquired human resources outsourcing and consulting firm Hewitt Associates.
2011 rank: 49
2010 rank: 42
Full-time employees in 2011: 1,515
Part-time employees in 2011: 16
Total employees in 2011: 1,531
Total employees in 2010: 2,012Copyright © 2015, Los Angeles Times