Service credit for leave of absence--Contributions to cover period of absence

A member taking a leave of absence authorized by the member's employer may receive credited service during the leave if employee and employer contributions are made to the system during the leave by or on behalf of the employee. The contributions shall be at the rates in effect during the leave and shall be based on the member's rate of compensation immediately prior to the leave. If a member's rate of compensation causes the member's compensation for the calendar year to exceed the maximum taxable amount for social security, the contributions shall include the additional contribution pursuant to §