Wisconsin Statutes Trade Regulations (Ch. 125 to 139) § 125.10. Municipal regulation

(1) Authorization. Any municipality may enact regulations incorporating any part of this chapter and may prescribe additional regulations for the sale of alcohol beverages, not in conflict with this chapter. The municipality may prescribe forfeitures or license suspension or revocation for violations of any such regulations. Regulations providing forfeitures or license suspension or revocation must be adopted by ordinance. Any municipality may, by ordinance, regulate contests, competitions, or other events for the exhibition, demonstration, judging, tasting, or sampling of homemade wine or fermented malt beverages.

(2) Regulation of underage persons. A municipality or a county may enact an ordinance regulating conduct regulated by s. 125.07(1) or (4)(a), (b) or (bm), 125.085(3)(b) or 125.09(2) only if it strictly conforms to the statutory subsection. A county ordinance enacted under this subsection does not apply within any municipality that has enacted or enacts an ordinance under this subsection.

(3) Zoning. Except as provided in s. 125.68, this chapter does not affect the power of municipalities to enact or enforce zoning regulations.

(4) Regulation of closed retail premises. A municipality may not prohibit the permittee, licensee, employees, salespersons, employees of wholesalers issued a permit under s. 125.28(1) or 125.54(1); employees of permittees under s. 125.295 with respect to the permittee's own retail premises; or service personnel from being present on premises operated under a Class “A”, “Class A” or “Class C” license or under a Class “B” or “Class B” license or permit during hours when the premises are not open for business if those persons are performing job-related activities.