RCW 41.76.075

Whenever a collective bargaining agreement between an employer and an exclusive bargaining representative is concluded after the termination date of the previous collective bargaining agreement between the same parties, the effective date of the collective bargaining agreement may be the day after the termination date of the previous collective bargaining agreement, and all benefits included in the new collective bargaining agreement, including wage or salary increases, may accrue beginning with the effective date as established by this section.