Sixth Edition of the European HR Barometer to be Released on 9 March

LONDON, March 2, 2011 - The results of the sixth edition of the European HR Barometer will be
released on 9 March at a seminar hosted by the Representation of the European
Commission in Brussels and organised by the European Club for HR and Aon
Hewitt, the global human resource consulting and outsourcing business of Aon
Corporation (NYSE:AON).

The new trends emerging from the HR leaders survey will be presented by
Leonardo Sforza, the author of the study. Luc Luyten, member of the board of
Bel Fromageries, and Peter van Spaandong, HR director for Ardagh Group will
comment on this year's results from both a board and an HR operations
perspective. Participants will have the opportunity to interact with speakers
and share their views on the evolving HR landscape in Europe.
Pre-Registration is required.

About the Research

The study, carried out by Aon Hewitt on behalf of the European Club for
human resources (EChr), highlights the new perspectives of HR leaders on
their policy priorities, practices and concerns.

This year's edition involved the participation of 52 leading
organisations employing more than 2.2 million people in total and generating
annual revenues in excess of 400 billion euros. The respondents encompassed
13 nationalities and in the majority of cases are VPs of HR or board members
with HR responsibility.

About Aon Hewitt

Aon Hewitt is the global leader in human resource consulting and
outsourcing solutions. The company partners with organisations to solve their
most complex benefits, talent and related financial challenges, and improve
business performance. Aon Hewitt designs, implements, communicates and
administers a wide range of human capital, retirement, investment management,
health care, compensation and talent management strategies. With more than
29,000 professionals in 90 countries, Aon Hewitt makes the world a better
place to work for clients and their employees. For more information on Aon
Hewitt, please visit www.aonhewitt.com.

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 www.aon.com for more information
on Aon and www.aon.com/manchesterunited to learn about Aon's global
partnership and shirt sponsorship with Manchester United.

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Media Contact: Colin Mayes, Aon Hewitt, +44(0)1372-733689, colin.mayes at aonhewitt.com ; Quintin Keanie, Capital MSL, +44(0)20-7255-5154, quintin.keanie at capitalmsl.com