A continuing contributor who, on:
(a) the date on which the first contract of employment entered into by him with the Government of Papua New Guinea is terminated; or
(b) 30 June 1978;
whichever first occurs, is not entitled to a pension under these Regulations is entitled, in addition to any other amount to which he is entitled under these Regulations, to be refunded an amount equal to the sum of the contributions paid by him since he entered into that contract, plus interest at the rate determined by the Commissioner.