Washington State

Office of the Attorney General

Attorney General

Bob Ferguson

AGO 1974 NO. 19 >

An initial collective bargaining agreement executed under chapter 41.56 RCW between a county, municipality or political subdivision and the bargaining representative of its employees may contain a provision whereby the salary or wage rates therein agreed upon will be payable for services previously rendered, from and after a designated date prior to its execution, but only if there was in existence during that previous period some kind of agreement that the wages received for their work performed between the date of such agreement and the execution of the collective bargaining agreement are not to be considered to be their full compensation; and no such agreement or understanding can be found from the mere act of certification or recognition of a bargaining agent under RCW 41.56.080.