K.S.A. 13-14,103

All elective or appointive city officers or employees under the provisions of this act shall pay to the city three percent of their salary to be used by the city in connection with amounts levied by the city under the provisions of K.S.A. 13-14,100 in the payment of the pensions herein provided for. The amounts to be paid by the elective or appointive officers or employees shall be deducted from the elective or appointive officer's or employee's salary semimonthly and shall be held by the city treasurer and shall be designated as "employees' pension fund." A record of all money deducted from elective or appointive officers' or employees' salaries as aforesaid shall be kept by a deputy in the city auditor's office designated by the governing body.