Aon Hewitt , based in Lincolnshire, Illinois, United States is a global human resources outsourcing and consulting firm. Hewitt was founded in 1940 and ceased to exist as an independent entity at the completion of its purchase by the Aon Corporation in October 2010. Hewitt's operations were merged at that time with some elements of Aon's consulting arm to become a new subsidiary of the Aon Group called Aon Hewitt. Edwin "Ted" Hewitt founded Edwin Shields Hewitt and Associates on October 1, 1940, as a brokerage house focusing on insurance and personal financial services. During and after the...