The council shall have the power to enforce the attendance of witnesses, the production of books and papers and power to administer oaths in the same manner and with like effect and under the same penalties as in the case of associate circuit judges exercising criminal or civil jurisdiction under the statutes of Missouri. Said commissioners shall make annual report to the council and it may require a special report from said commission at any time; and said council may prescribe such rules and regulations for the proper conduct of the business of the said commission as shall be found expedient and advisable, including restrictions on appointments, promotions, removals for cause, roster of employees, certification of records to the auditor, and restrictions on payment to persons improperly employed.