Wis. Stat. § 196.675: Unlawful for carriers and public utilities to employ assistant district attorneys or judicial officers.

(1) No common carrier operating within this state and no public utility, except a municipal public utility, may retain or employ an assistant district attorney or any person holding a judicial office.

(2) If any assistant district attorney or any person holding a judicial office violates this section, the assistant district attorney’s or judge’s office shall be deemed vacant.

(3) This section does not apply to circuit or supplemental court commissioners.