For purposes of determining the 30 day period to dispute the amount of a bill for an employer contribution for salary increases in excess of 6% and the 90 day interest grace period provided in 40 ILCS 5/16-158(f), an employer shall be deemed to have received a bill for employer contributions on the first day of the month following the bill date indicated on the bill.

(Source: Amended at 50 Ill. Reg. 4774, effective March 13, 2026)