Anything in this chapter to the contrary notwithstanding, the Governor is empowered to authorize a referendum in accordance with the requirements of Section 218(d)(3) of the Social Security Act on the question of whether services in positions covered by the District Attorneys Retirement Fund of Georgia, Chapter 12 of this title, shall be excluded from or included under an agreement under this chapter with an effective date of July 1, 1956. If the referendum results in an affirmative vote, employee contributions required for social security coverage shall be deducted by the commissioner of administrative services from the compensation or other funds due the employee and shall be remitted to the state agency, together with the required employer contributions. Such employee deductions shall be based on an affidavit from each individual as to the total wages received by him each calendar quarter as district attorney. Such affidavit shall be forwarded to the commissioner of administrative services before the fifth day of the month following the end of each calendar quarter. If any district attorney fails to submit the required affidavit to the commissioner of administrative services within the required time, any and all funds due such individual shall be withheld by the commissioner of administrative services until an appropriate affidavit has been received. The commissioner of administrative services is authorized and directed to pay the required employer contribution from the funds appropriated for the operation of the superior courts of the state.