; or

c

require the payment of contributions by a person (other than a person who became engaged in compulsory national service as defined in the Reserve and Auxiliary Forces (Protection of Civil Interests) Act, 1951) in respect of any period of national service if his national service pay in respect of that period, together with any sum which the authority or body by whom he was formerly employed may resolve to pay to or in respect of him in supplementation of that national service pay, is less than the remuneration to which he would have been entitled in respect of that period if he had continued in his former employment, after the deduction therefrom of an amount equivalent to the contributions which he would in that event have been liable to make thereon; or

d

in the case of any person (other than a person who became engaged in such compulsory national service as aforesaid) whose national service pay in respect of any period of national service, together with any such sum as aforesaid in respect of that period, is less than such remuneration as aforesaid but is greater than such remuneration as aforesaid after such deduction as aforesaid, require contributions to be made by that person in respect of that period exceeding the difference in respect of that period between his national service pay, together with any such sum as aforesaid, and the amount of such remuneration as aforesaid, after such deduction as aforesaid.