Jul 7, 2015

LONDON - Aon plc (NYSE:AON), the leading global provider of risk management and human resource consulting and outsourcing, plans to announce second quarter 2015 results on Friday, July 31st, 2015 in a news release to be issued before the market opens. Greg Case, president and CEO, will host a conference call at 7:30 am Central Time on Friday, July 31st, 2015. The conference call will be broadcast live through Aon's website at www.aon.com. Adobe Flash is required to listen to this webcast. A replay will be available shortly after the live webcast. The earnings release and supplemental slide presentation will be available on Aon's web site at www.aon.com.

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About Aon
Aon plc(NYSE:AON) is a leading global provider of risk management, insurance brokerage and reinsurancebrokerage, and human resourcessolutions and outsourcingservices. Through its more than 69,000 colleagues worldwide, Aonunites to empower results for clients in over 120 countries via innovativeriskand peoplesolutions. For further information on our capabilities and to learn how we empower results for clients, please visit: http://aon.mediaroom.com.

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Investor Contact:
Scott Malchow
Senior Vice President, Investor Relations
+44-207-086-0100

Media Contact:
Cybil Rose
Aon Media Relations
312-755-3537

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