Washington Revised Code Title 49. Labor Regulations § 49.44.100. Bringing in out-of-state persons to replace employees involved in labor dispute--Penalty

(1) It shall be unlawful for any person, firm or corporation not directly involved in a labor strike or lockout to recruit and bring into this state from outside this state any person or persons for employment, or to secure or offer to secure for such person or persons any employment, when the purpose of such recruiting, securing or offering to secure employment is to have such persons take the place in employment of employees in a business owned by a person, firm or corporation involved in a labor strike or lockout, or to have such persons act as pickets of a business owned by a person, firm or corporation where a labor strike or lockout exists: PROVIDED, That this section shall not apply to activities and services offered by or through the Washington employment security department.

(2) Any person violating this section is guilty of a gross misdemeanor.