The Milwaukee County Retirement System has hired Buck Consultants to help it run its retirement benefits program.

The Milwaukee system covers about 6,500 active employees and 7,000 retirees.

Buck, New York, a unit of Affiliated Computer Services Inc., Dallas, has a 5-year contract to provide annual actuarial valuations for the system, determine recommended contribution amounts and funded status, and perform a 5-year review of plan experience, the firm says.