2023 Washington Code 41.56.950 – Retroactive date in collective bargaining agreements allowable, when

2022 Washington Code 41.56.950 – Retroactive date in collective bargaining agreements allowable, when

2020 Washington Code 41.56.950 – Retroactive date in collective bargaining agreements allowable, when

2019 Washington Code 41.56.950 – Retroactive date in collective bargaining agreements allowable, when

2018 Washington Code 41.56.950 – Retroactive date in collective bargaining agreements allowable, when

2016 Washington Code 41.56.950 – Retroactive date in collective bargaining agreements allowable, when

2015 Washington Code 41.56.950 – Retroactive date in collective bargaining agreements allowable, when

2014 Washington Code 41.56.950 – Retroactive date in collective bargaining agreements allowable, when

2013 Washington Code 41.56.950 – Retroactive date in collective bargaining agreements allowable, when

2009 Washington Code 41.56.950 – Retroactive date in collective bargaining agreements allowable, when