Warner Music Group chief executive Edgar Bronfman is suing his former employer Vivendi S.A. for cutting his pension payments by about 65%, according to a complaint filed in a U.S. District Court in Manhattan on Tuesday.

Bronfman resigned from Vivendi in March 2002. He was executive vice chairman of the French telecom and media conglomerate following its acquisition of Seagram -- his family business -- in 2000.

In the complaint filed with the U.S. district court for the southern district of New York, Bronfman said Vivendi informed him in 2006 that it had made a mistake in its calculation and had erroneously credited him for 15 years of "additional service."

Bronfman's lawsuit counters that he was promised compensation in three separate contracts through a Benefit Equalization Plan, which promised credit for additional service beyond an employee's actual tenure in the form of pension payments.

The lawsuit further states that, had Bronfman known before leaving the company that the size of his pension would be reduced, he would have attempted to negotiate a higher rate of compensation.

A spokesman from Vivendi S.A. was not immediately available for comment.