Section 40 ILCS 5/15-181 - Duties of employers(a) Each employer, in preparing payroll vouchers for participating employees, shall indicate, in addition to other information: (1) the amount of employee contributions and survivors insurance contributions required under Section 15-157, (2) the gross earnings payable to each employee, and (3) the total of all contributions required under Section 15-157.(b) Each employer, in drawing warrants or checks against trust or federal funds for items of salary on payroll vouchers certified by employers, shall draw such warrants or checks to participating employees for the amount of cash salary or wages specified for the period, and shall draw a warrant or check to this system for the total of the contributions required under Section 15-157. The warrant or check drawn to this system, together with the additional copy of the payroll supplied by the employer, shall be transmitted immediately to the board.(c) The City of Champaign and the City of Urbana, as employers of persons who participate in this System pursuant to subsection (h) of Section 15-107, shall each collect and transmit to the System from each payroll the employee contributions required under Section 15-157, together with such payroll documentation as the Board may require, at the time that the payroll is paid. P.A. 90-576, eff. 3/31/1998; 91-887, eff. 7/6/2000.