Marsh & McLennan Companies (MMC) has appointed Daniel Glaser as new group president and chief operating officer, a newly created position. It has also named new CEOs for member companies, Marsh and Guy Carpenter.

Glaser has previously served as chairman and CEO of Marsh, a position he assumed in December 2007.

In his new role, Glaser will have operational and strategic oversight of Marsh & McLennan Companies’ risk & insurance and consulting segments.

In addition, Glaser will have responsibility for the company’s technology, business services, and international and client development functions.

Glaser will continue to report to Brian Duperreault, president and CEO Marsh & McLennan Companies.

Similarly, MMC also appointed Peter Zaffino as new president and CEO of Marsh, succeeding Dan Glaser. Zaffino had been president and CEO of Guy Carpenter, a position he assumed in early 2008.

Zaffino’s, previous role of as CEO of Guy Carpenter will be replaced by Alexander Moczarski.

Moczarski had been president of the international division of Marsh, responsible for operations in all areas of the world outside the US and Canada. He has more than 30 years of experience in the insurance industry, joined Marsh in 1993 from AIG.