Title 49 Labor Regulations 49.62.020. When void and unenforceable., Rev. Code Wash. (ARCW) § 49.62.020
Summary
(1) A noncompetition covenant is void and unenforceable against an employee:
(a)
(i) Unless the employer discloses the terms of the covenant in writing to the prospective employee no later than the time of the acceptance of the offer of employment and, if the agreement becomes enforceable only at a later date due to changes in the employee’s compensation, the employer specifically discloses that the agreement may be enforceable against the employee in the future; or