A provision in a noncompetition covenant signed by an employee or independent contractor who is Washington-based is void and unenforceable:

(1) If the covenant requires the employee or independent contractor to adjudicate a noncompetition covenant outside of this state; and

(2) To the extent it deprives the employee or independent contractor of the protections or benefits of this chapter.

See https://app.leg.wa.gov/RCW/default.aspx?cite=49.62