(40 ILCS 5/15-153) (from Ch. 108 1/2, par. 15-153)
    Sec. 15-153. Disability benefits - Amount. The disability benefit shall be the greater of (1) 50% of the basic compensation which would have been paid had the participant continued in service for the entire period during which disability benefits are payable, excluding wage or salary increases subsequent to the date of disability or extra prospective earnings on a summer teaching contract or other extra service not yet entered upon or (2) 50% of the participant's average earnings during the 24 months immediately preceding the month in which disability occurs. In determining the disability benefit, the basic compensation of a participating employee on leave of absence or on lay-off status shall be assumed to be equal to his or her basic compensation on the date the leave of absence or lay-off begins.
    If the disability benefit is 50% of basic compensation, payments during the academic year shall accrue over the period that the basic compensation would have been paid had the participant continued in service. If the disability benefit is 50% of the average earnings of the participant during the 24 months immediately preceding the month in which disability occurs, payments during the year shall accrue over a period of 12 months. Disability benefits shall be paid as of the end of each calendar month during which payments accrue. Payments for fractional parts of a month shall be determined by prorating the total amount payable for the full month on the basis of days elapsing during the month. Any disability benefit accrued but unpaid on the death of a participant shall be paid to the participant's beneficiary.
(Source: P.A. 93-347, eff. 7-24-03.)