Wis. Admin. Code Department of Workforce Development DWD 140.02
Any party may appear on the party's own behalf at any hearing under this chapter or appear with or by a representative. The representative shall be presumed to have full authority to act on behalf of the party, including the authority to file or withdraw an appeal. The representative shall have authority to act on behalf of the party until the party or the representative terminates the representative's authorization and notifies the department that such representation has ended. No attorney whose license is suspended or who has been otherwise disbarred and prohibited from practicing law by the courts or bar association of any state may be allowed to act as a representative at any hearing under this chapter.
Wis. Admin. Code Department of Workforce Development DWD 140.02