Wisconsin Statutes Employment, Compensation and Mining (Ch. 101 to 109) § 103.505. Collective bargaining; definitions

(1) A case shall be held to involve or to grow out of a labor dispute when the case involves persons who are engaged in a single industry, trade, craft, or occupation; or who are employees of one employer; or who are members of the same or an affiliated organization of employers or employees; whether such dispute is any of the following:

(2) A person or association shall be held to be a person participating or interested in a labor dispute if relief is sought against the person or association and if the person or association is engaged in the industry, trade, craft, or occupation in which the labor dispute occurs, or is a member, officer, or agent of any association of employers or employees engaged in that industry, trade, craft, or occupation.

(3) “Labor dispute” means any controversy between an employer and the majority of the employer's employees in a collective bargaining unit concerning the right or process or details of collective bargaining or the designation of representatives. Any organization with which either the employer or the majority of the employer's employees is affiliated may be considered a party to the labor dispute.