Illinois Statutes Chapter 40. Pensions § 5/16-158.3. Individual employer accounts

(a) The System shall create and maintain an individual account for each employer for the purposes of determining employer contributions under subsection (b-4) of Section 16-158. Each employer's account shall be notionally charged with the liabilities attributable to that employer and credited with the assets attributable to that employer.

(b) Beginning with fiscal year 2018, the System shall assign notional liabilities to each employer's account, equal to the amount of the employer contributions required to be made by the employer pursuant to items (i) and (ii) of subsection (b-4) of Section 16-158, plus any unfunded actuarial accrued liability associated with the defined benefits attributable to the employer's employees who first became members on or after the implementation date and the employer's employees who made the election under subsection (c-5) of Section 1-161.

(c) Beginning with fiscal year 2018, the System shall assign notional assets to each employer's account equal to the amounts of employer contributions made pursuant to items (i) and (ii) of subsection (b-4) of Section 16-158.