John T. Sinnott has rejoined Marsh & McLennan Companies, Inc., after retiring from the embattled professional services firm two years ago as the head of its Marsh brokerage unit.

New York-based MMC announced today that Mr. Sinnott was named a vice chairman of MMC, office of the CEO, effective July 1.

He joins MMC International chairman Mathis Cabiallavetta as a vice chairman of MMC. Mr. Sinnott will also become a member of the MMC executive committee.

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