Wis. Stat. § 66.0416: Certain businesses operated by minors.

(1) In this section:

(a) “Political subdivision” means a city, village, town, or county.

(b) “Stand operated by a minor” means a stand or other location at which goods other than potentially hazardous food, as defined in s. 97.30 (1) (bm), are sold in occasional sales, as defined in s. 77.51 (9), directly to consumers; that operates on a temporary, occasional basis; and that is operated solely by a person or persons under the age of 18 on private property with the permission of the property owner.

(2) No political subdivision may do any of the following:

(a) Enact an ordinance or adopt a resolution that prohibits a stand operated by a minor.

(b) Require a license or permit for, or impose a fee, charge, or surcharge on, any stand operated by a minor.

(c) Require a license or permit for a business that is operated by a person under the age of 18 and that is operated only occasionally. This paragraph does not apply to a business at which potentially hazardous food, as defined in s. 97.30 (1) (bm), is sold.

(3) If a political subdivision has enacted an ordinance or adopted a resolution before November 27, 2019, that is inconsistent with sub. (2) (a), the ordinance or resolution does not apply and may not be enforced.