83. A senior administrator who, at 31 December 1973, had a sick-leave fund acquired with 1 or more employments, may use the fund for the purposes of redeeming years of prior service for which no contributions were made to the Government and Public Employees Retirement Plan (RREGOP) for the purposes of pre-retirement, in the case of departure or death or for the purposes of making up the difference between the salary insurance benefit and the net salary.