Aon is trying to over throw their rival Marsh & McLennan Co(MMC).
Both are in insurance business, but MMC had made a early entry into HR consulting business in 1959.
Aon has not been able to over come MMC in the consulting business. By this merger Aon has leaped ahead of MMC in terms of HR consulting.
This move of Aon is very strategic, because with merger of HA with Aon, Aon gets ready clients of HA. And in all possibility they may try and vow the clients of HA with their insurance business.
This merger may cause some HA employees at junior and mid level to loss their jobs, but the top and the senior management will not loss jobs because Aon would require the HA employee at top and senior level for effectively running their business especially when Aon has not been able to create any ripples in HR consulting zone on their own in their earlier attempts.
Earlier also this kind of merger has happened
Crisil with S&P
Thomson with Reuters
HLL (now UNILEVER) with Kwality.
13th July 2010 From India, Mumbai