Section 40 ILCS 5/9-110 - "Future entrant"(a) Any person not described in subdivisions (b), (c), (d), or (e) of this definition of "Future Entrant" who becomes an employee on or after the effective date, except a county officer elected prior to July 1, 1947; and any person elected by vote of the people to a county office after July 1, 1947, who elects to become a contributor;(b) Any person who (1) was an employee on August 31, 1935, (2) was not a contributor prior to September 1, 1935, and (3) did not make application on or before September 1, 1935, to be covered by "The 1925 Act" for his periods of service prior to September 1, 1935;(c) Any person becoming an employee for the first time on or after the effective date, who (1) was an employee on August 31, 1935, (2) became a contributor prior to September 1, 1935, (3) rendered service to the county or board before he became a contributor, and (4) did not make application to the board on or before September 1, 1935, to be covered by "The 1925 Act" for his former periods of service;(d) Any person becoming an employee for the first time on or after the effective date who (1) was an employee on August 31, 1935, (2) became a contributor prior to September 1, 1935, (3) was employed by the county prior to becoming a contributor, and (4) made application on or before September 1, 1935, to the board to be covered by "The 1925 Act" for such former periods of service;(e) Any person becoming an employee for the first time on or after the effective date who (1) was in the employ of the county or the board on August 31, 1935, (2) did not become a contributor prior to September 1, 1935 and (3) made application on or before September 1, 1935, to be covered by "The 1925 Act" for his former periods of service.