Section 3. Section 7(d) of the act, amended December 20, 1983 (P.L.282, No.75), is amended and the section is amended by adding subsections to read:
Section 7. County Employes' Retirement Fund; Transfers Between Classes.--* * *
(d) Each member may elect to contribute an additional amount not exceeding ten per cent more than the percentage herein required. The contributions shall be paid into the fund through payroll deductions in such manner as the board may require.
(e) The board may at any time, by rule, authorize members of the retirement system, whether original or new members, to individually elect to reduce the contribution to any of the percentages required herein for any class lower than the class otherwise designated by the board as applicable to the retirement system to which the member belongs. Any such election shall in no way affect the calculation of the county annuity portion of the member's retirement allowance as provided in section 14, which county annuity portion shall be calculated as though the member had not made that election.
(f) All contributions including optional additional payments by members shall be credited to the members' annuity reserve account.
(g) The board may at any time, by rule, authorize members of the retirement system, whether original or new members, to transfer from the one-one hundred twentieth class, or from the one-one hundredth class, to the one-eightieth class, to the one-seventieth class, or to the one-sixtieth class. Whenever such transfers are authorized, salary deductions or pickup contributions applicable to the transferred members shall be based upon the per cent of salary deduction applicable while in each class, notwithstanding the provisions of subsection (e).