Any deferred compensation agreement made pursuant to this chapter shall be in addition to any retirement, pension or benefit programs otherwise available to employees of the public agency entering into the agreement. Furthermore, the current compensation of any employee agreeing to a current reduction under subsection 651(a) of this title shall be deemed to include the amount of any such reduction for the purpose of determining the employee's benefits under any retirement, pension or benefit programs otherwise available to the employee. (Added 1973, No. 175 (Adj. Sess.), eff. July 1, 1973.)