(40 ILCS 5/11-215) (from Ch. 108 1/2, par. 11-215)
    Sec. 11-215. Computation of service.
    (a) In computing the term of service of an employee prior to the effective date, the entire period beginning on the date he was first appointed and ending on the day before the effective date, except any intervening period during which he was separated by withdrawal from service, shall be counted for all purposes of this Article. Only the first year of each period of lay-off or leave of absence without pay, continuing or extending for a period in excess of one year, shall be counted as such service.
    (b) For a person employed by an employer for whom this Article was in effect prior to August 1, 1949, from whose salary deductions are first made under this Article after July 31, 1949, any period of service rendered prior to the effective date, unless he was in service on the day before the effective date, shall not be counted as service.
    (c) In computing the term of service of an employee subsequent to the day before the effective date, the following periods of time shall be counted as periods of service for annuity purposes:
        (1) the time during which he performed the duties of
    
his position;
        (2) leaves of absence with whole or part pay, and
    
leaves of absence without pay not longer than 90 days;
        (3) leaves of absence without pay that begin before
    
the effective date of this amendatory Act of the 97th General Assembly and during which a participant is employed full-time by a local labor organization that represents municipal employees, provided that:
            (A) the participant continues to make employee
        
contributions to the Fund as though he were an active employee, based on the regular salary rate received by the participant for his municipal employment immediately prior to such leave of absence (and in the case of such employment prior to December 9, 1987, pays to the Fund an amount equal to the employee contributions for such employment plus regular interest thereon as calculated by the board), and based on his current salary with such labor organization after the effective date of this amendatory Act of 1991;
            (B) the participant, or the labor organization
        
on the participant's behalf, makes contributions to the Fund as though it were the employer, as follows:
                (i) after January 1, 1989 and prior to levy
            
year 2017, in the same amount and same manner as specified under this Article, based on the regular salary rate received by the participant for his municipal employment immediately prior to such leave of absence, and based on his current salary with such labor organization after the effective date of this amendatory Act of 1991;
                (ii) beginning in levy year 2017 and until
            
the effective date of this amendatory Act of the 102nd General Assembly, in an amount equal to the contribution by the participant under subparagraph (A) of this paragraph; and
                (iii) on and after the effective date of
            
this amendatory Act of the 102nd General Assembly, in an amount equal to the difference between the contribution by the participant under subparagraph (A) of this paragraph and the normal cost, which shall be calculated by the Fund's actuary on an aggregate basis specific to the participant's Tier based on the Fund's most recent actuarial valuation and shall be effective on each July 1 after the Board certifies the amount of the contribution to the participant; and
            (C) the participant does not receive credit in
        
any pension plan established by the local labor organization based on his employment by the organization;
        (4) any period of disability for which he received
    
(i) a disability benefit under this Article, or (ii) a temporary total disability benefit under the Workers' Compensation Act if the disability results from a condition commonly termed heart attack or stroke or any other condition falling within the broad field of coronary involvement or heart disease, or (iii) whole or part pay.
    (d) For a person employed by an employer, or the retirement board, in which "The 1935 Act" was in effect prior to August 1, 1949, from whose salary deductions are first made under "The 1935 Act" or this Article after July 31, 1949, any period of service rendered subsequent to the effective date and prior to August 1, 1949, shall not be counted as a period of service under this Article, except such period for which he made payment, as provided in Section 11-221 of this Article, in which case such period shall be counted as a period of service for all annuity purposes hereunder.
    (e) In computing the term of service of an employee subsequent to the day before the effective date for ordinary disability benefit purposes, the following periods of time shall be counted as periods of service:
        (1) any period during which he performed the duties
    
of his position;
        (2) leaves of absence with whole or part pay;
        (3) any period of disability for which he received
    
(i) a duty disability benefit under this Article, or (ii) a temporary total disability benefit under the Workers' Compensation Act if the disability results from a condition commonly termed heart attack or stroke or any other condition falling within the broad field of coronary involvement or heart disease, or (iii) whole or part pay.
    However, any period of service rendered by an employee contributor prior to the date he became a contributor to the fund shall not be counted as a period of service for ordinary disability purposes, unless the person made payment for the period as provided in Section 11-221 of this Article, in which case the period shall be counted as a period of service for ordinary disability purposes for periods of disability on or after the effective date of this amendatory Act of 1997.
    Overtime or extra service shall not be included in computing any term of service. Not more than 1 year of service shall be allowed for service rendered during any calendar year.
    For the purposes of this Section, the phrase "any pension plan established by the local labor organization" means any pension plan in which a participant may receive credit as a result of his or her membership in the local labor organization, including, but not limited to, the local labor organization itself and its affiliates at the local, intrastate, State, multi-state, national, or international level. The definition of this phrase is a declaration of existing law and shall not be construed as a new enactment.
(Source: P.A. 102-742, eff. 5-6-22.)