Wash. Rev. Code § 49.17.110
Each employee shall comply with the provisions of this chapter and all rules, regulations, and orders issued pursuant to the authority of this chapter which are applicable to his or her own actions and conduct in the course of his or her employment. Any employee or representative of employees who in good faith believes that a violation of a safety or health standard, promulgated by rule under the authority of this chapter exists that threatens physical harm to employees, or that an imminent danger to such employees exists, may request an inspection of the workplace by giving notice to the director or his or her authorized representative of such violation or danger. Any such notice shall be reduced to writing, shall set forth with reasonable particularity the grounds for the notice, and shall be signed by the employee or representative of employees. A copy of the notice shall be provided the employer or his or her agent no later than at the time of inspection, except that, upon the request of the person giving such notice, his or her name and the names of individual employees referred to therein shall not appear in such copy or on any record published, released, or made available pursuant to any provision of this chapter. If upon receipt of such notification the director determines that there are reasonable grounds to believe that such violation or danger exists, he or she shall make a special inspection as soon as practicable, to determine if such violation or danger exists. If the director determines there are no reasonable grounds to believe that a violation or danger exists, he or she shall notify the employer and the employee or representative of the employees in writing of such determination.
Prior to or during any inspection of a workplace, any employee or representative of employees employed in such workplace may notify the director or any representative of the director responsible for conducting the inspection, in writing, of any violation of this chapter which he or she has reason to believe exists in such workplace. The director shall, by rule, establish procedures for informal review of any refusal by a representative of the director to issue a citation with respect to any such alleged violation, and shall furnish the employee or representative of employees requesting such review a written statement of the reasons for the director's final disposition of the case.
RCW 49.17.110