GOV §31641.20: Any member of the retirement system who elects pursuant to Section 31641.

Any member of the retirement system who elects pursuant to Section 31641.1 to make contributions and receive credit as service for time for which he or she claims credit because of public service shall contribute to the retirement fund, prior to the effective date of his or her retirement, by lump-sum payment or by installment payments over a period not to exceed five years, an amount equal to the sum of: (a) Twice the contributions he or she would have made to the retirement fund if he or she had been a member during the same length of time as that for which he or she has elected to receive credit as service, computed by applying the rate of contribution at the time of the election to the monthly compensation earnable by him or her at the time of the election pursuant to Section 31641.1, multiplied by the number of months for which he or she has elected to receive credit for county service, including time, if any, prior to the establishment of the system, and which will constitute current service under this system. (b) The “regular interest” which would have accrued to the member contributions if they had been made on the date used to determine on what earnable compensation contributions pursuant to this section shall be based, from that date until the completion of payment of those contributions, computed at the current interest rate. (c) The governing body by a four-fifths vote may provide that it shall make on behalf of officers and employees eligible to receive credit for prior service under this chapter, and who so elect prior to filing an application for retirement, part of the contributions specified in paragraphs (a) and (b) of this section. The contributions made by a governmental agency pursuant to this section shall be available only for purposes of retirement for service or for disability and a member resigning from county service shall be entitled to withdraw only that portion of his or her accumulated contributions made by him or her. (d) This section shall only apply in counties of the third class, as established by Sections 28020 and 28024, as amended by Chapter 1204 of the Statutes of 1971, but it shall not apply in those counties unless and until it is adopted by a majority vote of the board of supervisors.