Section 40 ILCS 5/7-151 - Total and permanent disability benefits - Commencement and durationPermanent disability benefits shall be payable:
(a) As of the date temporary disability benefits are exhausted;(b) Once a month as of the end of each month;(c) For less than a month in a fraction equal to that created by making the number of days of disability in the month the numerator and the number of the days in the month the denominator;(d) To the beneficiary of a deceased employee for the unpaid amount accrued to the date of death;(e) While total and permanent disability continues;(f) For the period ending on the last day of the month which is the later of the following: 1.the month that the participating employee attains the age for a full Social Security old-age insurance benefit ;2.the month which is 5 years after the month the participating employee became disabled as provided in Section 7-146.P.A. 86-272; 92-424, eff. 8/17/2001.