Sec. 2. (a) The trustee shall maintain a separate supplemental allowance reserve account for both the state police pre-1987 benefit system under IC 10-12-3 and the state police 1987 benefit system under IC 10-12-4 for the purpose of paying postretirement benefit adjustments, including:
(1) postretirement benefit increases; and
(2) thirteenth checks;
granted by the general assembly to employee beneficiaries after June 30, 2025.
(b) For purposes of subsection (a), "postretirement benefit adjustments" does not include a supplemental pension benefit under IC 10-12-5.