(735 ILCS 5/2-1709) (from Ch. 110, par. 2-1709)
    Sec. 2-1709. Payment of periodic installment obligations. (a) Except in those cases specified in this Part concerning the death of the person receiving periodic payments, the amount of periodic payments may not be adjusted or otherwise modified following final judgment.
    (b) Unless the court directs otherwise or the parties otherwise agree, payments must be scheduled at one-month intervals. Payments for damages accruing during the scheduled intervals are due at the beginning of the intervals.
    (c) If the trier of fact has found that different elements of future damages will accrue over different periods of time the court shall direct that amounts to be periodically paid in the future be proportionately divided into the same periods of time.
(Source: P.A. 84-7.)