LINCOLNSHIRE, Ill., February 10, 2011 - Aon Hewitt, the global human resource consulting and outsourcing solutions business of Aon Corporation (NYSE: AON), announced today it successfully went live with eight new Benefits Administration clients on January 3, 2011. Reflecting its continued leadership position in the industry, over the course of a week, Aon Hewitt added more than 325,000 participants and retirees to its existing base of 22 million participants served.

Across these new clients, Aon Hewitt implemented 12 services, including defined benefit, defined contribution, and health and welfare administration. Organizations served range in size from 5,000 employees to well in excess of 100,000 and cover a variety of industries, including technology, defense, retail, health care, and education.

"We are pleased with how Aon Hewitt has helped us transition our savings plan at United Technologies Corporation," said Natalie Morris, director of employee benefits and HR systems. "Our employees experienced a smooth transition and this has been a great opportunity for participants to evaluate their particular situation by taking advantage of Aon Hewitt's technology and tools to help them plan and execute their retirement."

"We are honored to be chosen to serve these organizations, and we take great pride in delivering outstanding service to their employees and retirees," said Kristi Savacool, chief executive officer, benefits administration, Aon Hewitt. "We take care to deliver a personal customer experience for our clients and their employees, backed by cutting-edge technology, robust infrastructure, and quality processes to ensure seamless service delivery."

About Aon
Aon Corporation (NYSE:AON) is the leading global provider of risk management services, insurance and reinsurance brokerage, and human capital solutions and outsourcing. Through its more than 59,000 colleagues worldwide, Aon unites to deliver distinctive client value via innovative and effective risk management and workforce productivity solutions. Aon's industry-leading global resources and technical expertise are delivered locally in over 120 countries. Named the world's best broker by Euromoney magazine's 2008, 2009 and 2010 Insurance Survey, Aon also ranked highest on Business Insurance's listing of the world's insurance brokers based on commercial retail, wholesale, reinsurance and personal lines brokerage revenues in 2008 and 2009. A.M. Best deemed Aon the number one insurance broker based on revenues in 2007, 2008 and 2009, and Aon was voted best insurance intermediary 2007-2010, best reinsurance intermediary 2006-2010, best captives manager 2009-2010, and best employee benefits consulting firm 2007-2009 by the readers of Business Insurance. Visit http://www.aon.com for more information on Aon and http://www.aon.com/manchesterunited to learn about Aon's global partnership and shirt sponsorship with Manchester United.
 

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Media Contacts:
Joe Micucci
312-381-4786
joe.micucci@aonhewitt.com

Amy Wulfestieg
847-442-4982
amy.wulfestieg@aonhewitt.com