2023 Washington Code 48.150.040 – Prohibited and authorized practices

2022 Washington Code 48.150.040 – Prohibited and authorized practices

2020 Washington Code 48.150.040 – Prohibited and authorized practices

2019 Washington Code 48.150.040

2018 Washington Code 48.150.040 – Prohibited and authorized practices

2016 Washington Code 48.150.040 – Prohibited and authorized practices

2015 Washington Code 48.150.040 – Prohibited and authorized practices

2014 Washington Code 48.150.040 – Prohibited and authorized practices

2013 Washington Code 48.150.040 – Prohibited and authorized practices

2009 Washington Code 48.150.040 – Prohibited and authorized practices