Illinois Statutes Chapter 40. Pensions § 5/6-165.2. Funding Obligation

(a) Beginning January 1, 2016, the city shall be obligated to contribute to the Fund in each fiscal year an amount not less than the amount determined annually under subsection (a) of Section 6-165 of this Code. Notwithstanding any other provision of law, if the city fails to pay the amount guaranteed under this Section on or before December 31 of the year in which such amount is due, the Fund may bring a mandamus action in the Circuit Court of Cook County to compel the city to make the required payment, irrespective of other remedies that may be available to the Fund. The obligations and causes of action created under this Section shall be in addition to any other right or remedy otherwise accorded by common law or State or federal law, and nothing in this Section shall be construed to deny, abrogate, impair, or waive any such common law or statutory right or remedy.

(b) In ordering the city to make the required payment, the court may order a reasonable payment schedule to enable the city to make the required payment without significantly imperilling the public health, safety, or welfare. Any payments required to be made by the city pursuant to this Section are expressly subordinated to the payment of the principal, interest, premium, if any, and other payments on or related to any bonded debt obligation of the city, either currently outstanding or to be issued, for which the source of repayment or security thereon is derived directly or indirectly from any funds collected or received by the city or collected or received on behalf of the city. Payments on such bonded obligations include any statutory fund transfers or other prefunding mechanisms or formulas set forth, now or hereafter, in State law, city ordinance, or bond indentures, into debt service funds or accounts of the city related to such bonded obligations, consistent with the payment schedules associated with such obligations.