Wis. Stat. § 134.57
Any employer and any person employed to detect dishonesty on the part of employees, or fiduciary agents, on a commission basis or under a contract for a percentage of the amount recovered through or by reason of the detective work done by such person, shall submit the facts of the case and the settlement made with such employee or fiduciary agent to the circuit judge of the county wherein the dishonest act was committed, for approval or further proceedings, and the employee shall be notified of such hearing and shall have a right to be heard. Any such person or employer who shall not so submit the facts and settlement as made to such circuit judge for approval or further proceedings, shall be deemed guilty of a misdemeanor, and upon conviction shall be fined not less than $100 nor more than $500, or imprisoned in the county jail not less than 3 months nor more than one year.
Wis. Stat. § 134.57