(1) It is an unfair labor practice for the employer or its representatives:
(a) To interfere with, restrain, or coerce employees in the exercise of the rights guaranteed by this chapter;
(b) To dominate or interfere with the formation or administration of any employee organization or contribute financial or other support to it. However, subject to rules made by the public employment relations commission pursuant to RCW
41.58.050, an employer shall not be prohibited from permitting employees to confer with it or its representatives or agents during working hours without loss of time or pay;
(c) To encourage or discourage membership in any employee organization by discrimination in regard to hiring, tenure of employment, or any term or condition of employment, but nothing contained in this subsection prevents an employer from requiring, as a condition of continued employment, payment of periodic dues and fees uniformly required to an exclusive bargaining representative pursuant to RCW
47.64.160. However, nothing prohibits the employer from agreeing to obtain employees by referral from a lawful hiring hall operated by or participated in by a labor organization;
(d) To discharge or otherwise discriminate against an employee because he or she has filed charges or given testimony under this chapter;
(e) To refuse to bargain collectively with the representatives of its employees.
(2) It is an unfair labor practice for an employee organization:
(a) To restrain or coerce (i) employees in the exercise of the rights guaranteed by this chapter. However, this subsection does not impair the right of an employee organization to prescribe its own rules with respect to the acquisition or retention of membership therein, or (ii) an employer in the selection of his or her representatives for the purposes of collective bargaining or the adjustment of grievances;
(b) To cause or attempt to cause an employer to discriminate against an employee in violation of subsection (1)(c) of this section;
(c) To refuse to bargain collectively with an employer.
(3) The expression of any view, argument, or opinion, or the dissemination thereof to the public, whether in written, printed, graphic, or visual form, shall not constitute or be evidence of an unfair labor practice under any of the provisions of this chapter, if the expression contains no threat of reprisal or force or promise of benefit.