Marsh Chief Client Officer David Duffield has announced his retirement after 45 years with the broker.

He leaves at the end of this month, a spokesman told insuranceNEWS.com.au.

CEO Pacific Scott Leney says many of the initiatives introduced by Mr Duffield “form the bedrock of the Marsh business as it exists today,” Mr Leney said. “It is impossible to overstate David’s impact at Marsh, both as a respected leader and generous mentor.”