2023 Washington Code 41.59.140 – Unfair labor practices for employer, employee organization, enumerated

2022 Washington Code 41.59.140 – Unfair labor practices for employer, employee organization, enumerated

2020 Washington Code 41.59.140 – Unfair labor practices for employer, employee organization, enumerated

2019 Washington Code 41.59.140 – Unfair labor practices for employer, employee organization, enumerated

2018 Washington Code 41.59.140 – Unfair labor practices for employer, employee organization, enumerated

2016 Washington Code 41.59.140 – Unfair labor practices for employer, employee organization, enumerated

2015 Washington Code 41.59.140 – Unfair labor practices for employer, employee organization, enumerated

2014 Washington Code 41.59.140 – Unfair labor practices for employer, employee organization, enumerated

2013 Washington Code 41.59.140 – Unfair labor practices for employer, employee organization, enumerated

2009 Washington Code 41.59.140 – Unfair labor practices for employer, employee organization, enumerated