LINCOLNSHIRE, Ill. - April 15, 2015 - , the global talent, retirement and health solutions business of Aon plc (NYSE: AON), today announced it has been named to the ®list by the International Association of Outsourcing Professionals (IAOP ®).

The IAOP 2015 Global Outsourcing 100 list recognizes the world's best outsourcing service providers across all industries, including information technology, sales, and research and development. Companies are judged by an independent panel of experienced outsourcing buyers based on four key criteria: size and growth, delivery excellence, programs for innovation and corporate social responsibility (CSR).

"Our clients rank us as a top provider for our breadth of solutions, integrated approach to advice, design and deliver across solutions, and ability to quickly adapt to market changes and new technology," said Maureen Scholl, CEO, Outsourcing, Aon Hewitt. "Being named to the Global Outsourcing 100listprovides an important validation for companies seeking a strong outsourcing partner that we are highly regarded as one of the world's best outsourcing service providers."

Aon Hewitt also received sub-list honors for Best Leaders in Overall Revenue, Best Leaders in Number of Employees and Best Leaders in Number of Countries Worldwide. Aon also is among those achieving the highest ratings for size and growth, programs for innovation and corporate social responsibility.

Aon Hewitt is a leading global and North American benefits provider, administering benefits for nearly 22 million people and operating more than 15 global delivery centers. Colleagues handle more than 24 million calls annually across nearly 20 customer service centers and process over 130 million transactions on behalf of clients' employees and retirees.

The complete 2015 lists will be published in the June 15 Global 500 issue of Fortune magazine in a special advertising feature sponsored by IAOP.

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About Aon Hewitt
Aon Hewitt empowers organizations and individuals to secure a better future through innovative talent, retirement and health solutions. We advise, design and execute a wide range of solutions that enable clients to cultivate talent to drive organizational and personal performance and growth, navigate retirement risk while providing new levels of financial security, and redefine health solutions for greater choice, affordability and wellness. Aon Hewitt is the global leader in human resource solutions, with over 30,000 professionals in 90 countries serving more than 20,000 clients worldwide. For more information on Aon Hewitt, please visit www.aonhewitt.com.

About Aon
Aon plc(NYSE:AON) is a leading global provider of risk management, insurance and reinsurancebrokerage, and human resourcessolutions and outsourcingservices. Through its more than 66,000 colleagues worldwide, Aonunites to empower results for clients in over 120 countries via innovativeand effective riskand peoplesolutions and through industry-leading global resources and technical expertise. Aon has been named repeatedly as the world's best broker, best insurance intermediary, best reinsurance intermediary, best captives manager, and best employee benefitsconsulting firm by multiple industry sources. Visit aon.comfor more information on Aon and aon.com/manchesterunitedto learn about Aon's global partnership with Manchester United.

About IAOP
IAOP is the go-to association leading the way to improve outsourcing outcomes by bringing together customers, providers and advisors in a collaborative, knowledge-based environment that promotes professional development, recognition, certification and excellence. With over 120,000 members and affiliates worldwide, IAOP is not only on top of the latest trends but in front of them. Through its expansive global chapter network, premier training and certification programs, knowledge center, member community and more, IAOP helps members learn, grow and succeed.www.IAOP.org.


Media Contacts:
Roxanne Pipitone, 847-442-1317, roxanne.pipitone@aonhewitt.com
Maurissa Kanter, 847-442-0952, maurissa.kanter@aonhewitt.com

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