"Affected pension plan" means a defined-benefit pension plan supported in whole or in part by employer contributions and maintained by the Regional Transportation Authority, the Suburban Bus Division, or the Commuter Rail Division, or any combination thereof, under the general authority of the Regional Transportation Authority Act, including but not limited to any such plan that has been established under or is subject to a collective bargaining agreement or is limited to employees covered by a collective bargaining agreement. "Affected pension plan" does not include any pension fund or retirement system subject to Section 22-101 of this Section.
"Authority" means the Regional Transportation Authority created under the Regional Transportation Authority Act.
"Contributing employer" means an employer that is required to make contributions to an affected pension plan under the terms of that plan.
"Funding ratio" means the ratio of an affected pension plan's assets to the present value of its actuarial liabilities, as determined at its latest actuarial valuation in accordance with applicable actuarial assumptions and recommendations.
"Under-funded pension plan" or "under-funded" means an affected pension plan that, at the time of its last actuarial valuation, has a funding ratio of less than 90%.
In the case of an affected pension plan that has more than one contributing employer, each contributing employer's share of the total additional employer contributions required under this subsection shall be determined: (i) in proportion to the amounts, if any, by which the respective contributing employers have failed to meet their contribution obligations under the terms of the affected pension plan; or (ii) if all of the contributing employers have met their contribution obligations under the terms of the affected pension plan, then in the same proportion as they are required to contribute under the terms of that plan. In the case of an affected pension plan that has only one contributing employer, that contributing employer is responsible for all of the additional employer contributions required under this subsection.
If an under-funded pension plan is determined to have achieved a funding ratio of at least 90% during the period when an amortization schedule is in force under this Section, the contributing employers and the trustee of the affected pension plan, acting jointly, may cancel the amortization schedule and the contributing employers may cease making additional contributions under this subsection for as long as the affected pension plan retains a funding ratio of at least 90%.
This subsection shall not operate to impair any contract or vested right acquired before August 19, 2011 (the effective date of Public Act 97-442) under any law or laws continued in this Code, and it shall not preclude the right to refund.
40 ILCS 5/22-103