Any city, county, or city and county charter provision to the contrary notwithstanding, each person employed by an agency on July 1, 1955, and each person employed by an agency on September 11, 1957, who was theretofore excluded, solely by reason of the provisions of the predecessor of Section 8366 in effect prior to July 1, 1955, or who was therefore excluded solely by reason of the provisions of the predecessor of this section prior to September 11, 1957, from membership in any retirement system in which the agency participates or to which it contributes for the purpose of providing retirement rights and benefits for employees of the agency not employed in a status requisite for membership in the State Teachers’ Retirement System, shall become a member of the retirement system from which he was excluded, on July 1, 1955, or on September 11, 1957, if theretofore excluded solely by reason of the provisions of the predecessor of this section in effect prior to that date. Every such member shall be entitled to credit for service in child development programs rendered prior to July 1, 1955, or prior to September 11, 1957, if theretofore excluded, and before he became a member of the system, in the same manner as if he had not theretofore been excluded from membership in the retirement system, except that he shall not be required to make any contributions to the retirement system in respect to such service rendered prior to his membership, and all contributions necessary to provide benefits on account of such service shall be paid to the retirement system by the agency by which the member is employed. For the purpose of computing benefits for services rendered prior to July 1, 1955, as provided in this section, the average monthly salary earned by such employee in the fiscal year 1954–55 shall be used and for the purpose of computing benefits for service rendered between July 1, 1955, and September 11, 1957, for members receiving credit for service between those dates under the provisions of the predecessor of this section as amended by Chapter 1238 of the Statutes of 1957, the average monthly salary earned by such employees in the fiscal year 1956–57 shall be used.
Notwithstanding any other provisions of this section, for the purpose of computing benefits for any person retired on and after January 1, 1958, for services rendered prior to July 1, 1955, as provided in this section, and for the purpose of computing benefits for services rendered between July 1, 1955, and September 11, 1957, for members receiving credit for service between those dates under the provisions of this section, the “final compensation” of such person shall be computed in the same manner as for other employees who are included in the same retirement system and in the same class of retirement system members and who are not affected by this section. The amendment to this section enacted at the 1963 session shall be applied to increase the allowances, payable subsequent to October 1, 1963, in respect to those members who retired on or after July 1, 1955.
Notwithstanding any other provisions of this section no increased allowance shall be paid, as authorized by this section, to any person who has retired between July 1, 1955, and October 1, 1963, unless the person to whom the increase would otherwise be payable mails written application for the increase to the appropriate retirement system prior to April 1, 1964.