(1)    General powers of the commission. The commission may appoint or employ professional or technical advisers and experts and other personnel the commission requires for the proper execution of its duties under this subchapter, fix their compensations and remove or discharge the employees at pleasure.

   (2)   Fixed period appointments. The commission may appoint or employ highly trained, experienced or skilled employees for fixed periods.

   (3)   Indemnity bonds. The commission may require any employee to provide an indemnity bond in an amount the commission finds appropriate for the proper performance of the employee’s duties. No law respecting civil service applies to the commission or to the commission’s employees.

   (4)   Retirement benefits. Any employee of the district hired on or after April 26, 1982, is eligible to participate in any compensation or benefit program in which employees of a sewerage commission of a 1st class city under ss. 62.60 to 62.27, 1979 stats., participated, and such program shall treat the employee as eligible to participate in such program. If an employee of the district is receiving retirement benefits from such a program at the time of employment by the district, such employee is not eligible to participate in the program unless the employee elects to suspend his or her retirement benefit payments during his or her employment by the district.