Wisconsin Statutes Employment, Compensation and Mining (Ch. 101 to 109) § 103.85. One day of rest in seven

(1) Every employer of labor, whether a person, partnership or corporation, who owns or operates any factory or mercantile establishment in this state, shall allow every person, except those specified in sub. (2), employed in such factory or mercantile establishment, at least 24 consecutive hours of rest in every 7 consecutive days and shall not permit any such person to work for such employer during such 24 consecutive hour period, except in case of breakdown of machinery or equipment, or other emergency, requiring the immediate services of experienced and competent labor to prevent serious injury to person, damage to property, or suspension of necessary operations, when such experienced and competent labor is not otherwise immediately available. This shall not authorize any work on Sunday not now authorized by law.

(2) This section does not apply to:

(3) Every employer shall keep a time book showing the names and addresses of all employees and the hours worked by each of them in each day, and such time book shall be open to inspection by the department.

(4) If upon investigation, the department shall ascertain and determine that there be practical difficulties or unnecessary hardships in carrying out the provisions of this section, or upon a joint request of labor and management, the department may by general or special order make reasonable exceptions therefrom or modifications thereof provided that the life, health, safety and welfare of employees shall not be sacrificed or endangered thereby. Such investigation and orders shall be made as provided under s. 103.005. Such orders shall be subject to review under ch. 227.

(5) Every employer who violates this section shall be punished as provided in s. 103.005(11) and (12).