Tthese Union friendly laws were passed by the legislature this year and effective June 2018.
http://apps2.leg.wa.gov/billsummary?BillNumber=6229&Year=2017&BillNumber=6229&Year=2017 (this bill is effective June 2018). Re Union Orientation
http://apps2.leg.wa.gov/billsummary?BillNumber=2751&Year=2017 (this bill also passed with an effective date of June 2018). Re Union dues
Also a good article to read re; Supreme Court and Janus (when you get time).