Kan. Stat. § 44-615
It shall be unlawful for any person, firm or corporation to discharge any employee or to discriminate in any way against any employee because of the fact that any such employee may testify as a witness before the secretary of labor, or shall sign any complaint or shall be in any way instrumental in bringing to the attention of the secretary of labor any matter of controversy between employers and employees as provided herein.
It shall also be unlawful for any two or more persons, by conspiring or confederating together, to injure in any manner any other person or persons, or any corporation, in their, or its business, labor, enterprise, or peace and security, by boycott, by discrimination, by picketing, by advertising, by propaganda, or other means, because of any action taken by any such person or persons, or any corporation, under any order of the secretary of labor, or because of any action or proceeding instituted before the secretary, or because any such person or persons, or corporation, shall have invoked the jurisdiction of the secretary in any matter provided for herein.
K.S.A. 44-615