40 ILCS 5/9-128.2: Stipends.

Any elected county officer who was entitled to receive a stipend from the State on or after July 1, 2009 and on or before June 30, 2010 may establish earnings credit for the amount of stipend not received, if the elected county official applies in writing to the fund within 6 months after the effective date of this amendatory Act of the 96th General Assembly and pays to the fund an amount equal to (i) employee contributions on the amount of stipend not received, (ii) employer contributions determined by the Board equal to the employer's normal cost of the benefit on the amount of stipend not received, plus (iii) interest on items (i) and (ii) at the actuarially assumed rate.