Wis. Stat. § 105.14
The department may fix reasonable rules for the conduct of the business of any employment agent or employment agency as are necessary to carry out this chapter. The department may fix reasonable classifications of employments or positions and fix a reasonable scale of fees to be charged by employment agents to applicants for employment for each classification within the restrictions contained in this chapter, and may fix reasonable classifications of the business of employment agents, and make its rules and orders conform to these classifications. It may prescribe the form of books, registers or records to be kept by the employment agent, the receipts or copies of contracts to be handed to persons referred to employment, the reports to be made to the department, the refunds to be made to applicants who failed to secure employment; and it may order any other measures reasonably necessary to protect the public and persons seeking employment against fraud, misrepresentation or any other unauthorized act of any employment agent.
Wis. Stat. § 105.14