Wis. Stat. § 601.11: Personnel.

(1) Deputy commissioner.

(a) Appointment. The deputy commissioner shall be appointed subject to ss. 15.04 (2) and (3) and 15.73.

(b) Acting commissioner. When the office of commissioner is vacant, or when the commissioner is unable to perform his or her duties because of mental or physical disability, the deputy commissioner shall be acting commissioner. The deputy commissioner shall have such other duties and powers as the commissioner delegates and assigns.

(2) Other personnel. Except for those employed under s. 601.14 (2) or otherwise specifically exempted, all personnel including staff attorneys shall be appointed under the classified service.