Washington Revised Code Title 49. Labor Regulations § 49.12.187. Collective bargaining rights not affected--Applicability

(1) This chapter shall not be construed to interfere with, impede, or in any way diminish the right of employees to bargain collectively with their employers through representatives of their own choosing concerning wages or standards or conditions of employment. However, rules adopted under this chapter regarding appropriate rest and meal periods as applied to employees in the construction trades may be superseded by a collective bargaining agreement negotiated under the national labor relations act, 29 U.S.C. Sec. 151 et seq., if the terms of the collective bargaining agreement covering such employees specifically require rest and meal periods and prescribe requirements concerning those rest and meal periods.

(2) Employees of public employers may enter into collective bargaining contracts, labor/management agreements, or other mutually agreed to employment agreements that specifically vary from or supersede, in part or in total, rules adopted under this chapter regarding appropriate rest and meal periods.

(3) Rules adopted under this chapter regarding appropriate rest and meal periods as applied to employees who have entered into a contract to play baseball at the minor league level may be superseded by a collective bargaining agreement negotiated under the national labor relations act, 29 U.S.C. Sec. 151 et seq., if the terms of the collective bargaining agreement covering such employees expressly provides for wages and working conditions.