Wisconsin Statutes Employment Relations (Ch. 111) § 111.89. Strike prohibited

(1) Upon establishing that a strike is in progress, the employer may either seek an injunction or file an unfair labor practice charge with the commission under s. 111.84(2)(e) or both. It is the responsibility of the division to decide whether to seek an injunction or file an unfair labor practice charge. The existence of an administrative remedy does not constitute grounds for denial of injunctive relief.

(2) The occurrence of a strike and the participation therein by an employee do not affect the rights of the employer, in law or in equity, to deal with the strike, including: