Reappointment under this chapter may be either permissive at the discretion of the appointing authority or mandatory as required by the law or rule of the director. In those instances where an employee or former employee has "eligibility" for reinstatement, the action is permissive. In those instances where an employee or former employee has the "right" of restoration, the action is mandatory.
Wis. Admin. Code Department of Administration-Division of Personnel Management; Merit Recruitment § ER-MRS 16.01
See s. ER-MRS 1.02(29) and (30) for definitions of reinstatement and restoration.