NIAGARA FALLS – A contract bargaining session was held Thursday between Niagara Falls Memorial Medical Center and the union representing 650 of its employees.

The existing contract, which was to have expired Dec. 8, has been extended several times, with the latest extension lasting until March 31, said Bruce Popper of Local 1199, Service Employees International Union, United Healthcare Workers East. Hospital spokesman Patrick J. Bradley confirmed that a bargaining session was held and no agreement was completed.

The workers covered by the contract include registered and licensed practical nurses, technicians, therapists, social workers, and dietary, housekeeping and maintenance employees.