(a) Each public defender incumbent on July 1, 1978, may elect to be included in the provisions of this section and § 51-49, and in each such case, the Comptroller shall deduct five per cent of the salary of each such public defender as contributions for the purposes of this section and § 51-49, provided any such public defender who has so elected may thereafter elect to be included under the provisions of chapters 65 and 66 and upon such election his past contributions under this section shall be transferred to the State Employees Retirement Fund and he shall be credited with all prior service. The Chief Public Defender and the Deputy Chief Public Defender may elect to be included in the provisions of this section and § 51-49, and in each such case, the Comptroller shall deduct five per cent of the salary of such person as contributions for the purposes of this section and § 51-49.

(b) Each person who elected to be included in the provisions of this section and § 51-49 and who has attained the age of sixty-five or who attains the age of sixty-five while serving in office, and each such person who has attained the age of sixty and so elects, or who attains the age of sixty while serving in office and so elects, shall receive annually as retirement salary, for each year he has served in such office, one-tenth of two-thirds of the salary of such office, as such salary may be changed from time to time, but in no event more than two-thirds of such salary.

(c) Each such person shall, for retirement purposes, be entitled to credit for any or all the prior years of service accrued by him on the date of his appointment as Chief Public Defender, Deputy Chief Public Defender or public defender, while serving in the office of (1) Chief Public Defender, (2) Deputy Chief Public Defender, (3) public defender, assistant public defender or deputy assistant public defender in the Superior Court, Court of Common Pleas or Circuit Court, (4) state’s attorney, assistant state’s attorney or deputy assistant state’s attorney in the Superior Court, or (5) prosecuting attorney or assistant prosecuting attorney in the Court of Common Pleas or the Circuit Court, provided such person shall pay to the Comptroller five per cent of the salary of his office for each prior year of service he claims for retirement credit. Each such person shall be entitled to have his retirement contributions to the state employees retirement system under chapter 66 credited toward the payment due for the prior years of service he claims for retirement credit.

(d) If any such person resigns or is removed from office before his retirement under this section, he shall be entitled to the return of all contributions made by him under this section, without interest, except that if such person has completed at least ten years of credited service under this section, he may, at his option, elect instead to receive a retirement income on a reduced actuarial basis, as determined by the Comptroller.

(e) Each spouse of a person who elected to be included in the provisions of this section and § 51-49, if such person died while holding the office of Chief Public Defender, Deputy Chief Public Defender or public defender or after his retirement under this section or § 51-49, shall receive a monthly allowance equal to one-twelfth of thirty-three and one-third per cent of the salary of the office which such person held at the time of his death or retirement, as such salary may be changed from time to time. If such person leaves no surviving spouse, or if the surviving spouse dies before the youngest child of such person reaches the age of eighteen, such monthly allowance shall be payable, until such child reaches the age of eighteen, to his guardian, for the support of such child and any other children of such person under the age of eighteen.

(f) For purposes of determining the retirement salary of each Chief Public Defender, Deputy Chief Public Defender or public defender under subsection (b) of this section and the allowance payable to their surviving spouses under subsection (e) of this section, “salary of the office” shall be composed of the total of the following amounts: The annual salary of the office which he held at the time of his retirement, as such salary may be changed from time to time and for each Chief Public Defender, Deputy Chief Public Defender and public defender to whom a longevity payment has been made or is due and payable, in each instance under § 51-295b or § 5-213, (1) one and one-half per cent of annual salary, as such salary may change from time to time, for those who have completed ten or more but less than fifteen years of service as a Chief Public Defender, Deputy Chief Public Defender or public defender, (2) three per cent of annual salary, as such salary may change from time to time, for those who have completed fifteen or more but less than twenty years of service as Chief Public Defender, Deputy Chief Public Defender or public defender, (3) four and one-half per cent of annual salary, as such salary may change from time to time, for those who have completed twenty or more but less than twenty-five years of service as a Chief Public Defender, Deputy Chief Public Defender or public defender, and (4) six per cent of annual salary, as such salary may change from time to time, for those who have completed twenty-five or more years of service as a Chief Public Defender, Deputy Chief Public Defender or public defender.

(g) The Comptroller shall deduct from the longevity payable under § 51-295b or § 5-213 to each Chief Public Defender, Deputy Chief Public Defender or public defender who is included in the provisions of this section and § 51-49, five per cent of the longevity payment as contributions for the purposes of this section and § 51-49.