Section 40 ILCS 5/8-126 - Persons to whom article does not apply(A) This Article does not apply to any of the following persons: (a) Any person employed in a position the duties of which will not ordinarily permit the following periods of service during a calendar year: - (1) 4 months in any case where the salary or wage is on a monthly basis; (2) 17 weeks in any case where the salary or wage is on a weekly basis; (3) 100 days in any case where the salary or wage is on a daily basis; or (4) 700 hours in any case where the salary or wage is on an hourly basis;(b) Any person employed in a position classified by the civil service commission of the city, or by the personnel office in a city with a personnel ordinance, as in the labor service unless he is a participant in a Municipal Pension Fund in operation in the city on the effective date, or unless he was employed in such position, if he was in the service of the employer on the effective date, and is not a participant in any such pension fund, if within 6 months thereafter he applies in writing to the board to be included under this Article;(c) Any person who enters service at age 65 or more prior to January 1, 1979, or who enters the service at age 70 or more subsequent to January 1, 1979, or who has not become a contributor prior to such ages;(d) Any person employed by an employer or the board while a contributor or eligible to contribute to any annuity and benefit fund, annuity and retirement fund or any pension fund now or hereafter in operation in such city for the benefit of employees of the employer, except the annuity and benefit fund herein provided for or a Municipal Pension Fund, or while receiving a pension or annuity, other than widow's or child's annuity, from any of such aforesaid funds; or(e) Any person transferred to the employment of an employer by virtue of the "Exchange of Functions Act of 1957".(B) The board of trustees may, by resolution, exclude persons who become employees after June 30, 1979 as public service employment program participants under the Federal Comprehensive Employment and Training Act and whose wages or fringe benefits are paid in whole or in part by funds provided under such Act.