A lawsuit filed in U.S. District court this week by a former CEO with Waste Management Inc. tries to spell out how the giant waste hauling company he founded nearly three decades ago is now denying him up to $15 million in retirement and pension benefits, allegedly for no good reason.

Dean L. Buntrock also contends in the 74-page complaint filed Tuesday that actions by two men brought in to help the company after it merged with Houston-based USA Waste Services Inc. in 1998 actually led to a $27 million personal loss in stock.