Wisconsin Statutes Employment, Compensation and Mining (Ch. 101 to 109) § 103.75. Certificates of age

(1) The department or persons designated by the department may issue certificates of age for individuals under rules the department deems necessary. In issuing a certificate of age, the department or person designated by the department shall accept as evidence of the individual's age the evidence specified in s. 103.73(1)(a) in the manner specified in s. 103.73(1)(a). The certificate is conclusive evidence of the age of the individual to whom issued in any proceeding under any of the labor laws and under ch. 102 as to any act or thing occurring subsequent to the date the certificate was issued.

(2) Any person who knowingly offers or assists in offering false evidence of age for the purpose of obtaining an age certificate or who alters, forges, fraudulently obtains, uses, or refuses to surrender upon demand of the department a certificate of age may be fined not more than $100 or imprisoned not to exceed 3 months.