(1) The contributions of a contributor to the Provident Account:
(a) shall be at the rate of 10 cents for each $2 or part of $2 of each fortnightly payment of his salary; and
(b) shall be deducted from his salary at each payment of salary.
(2) A contributor to the Provident Account shall contribute to that Account as from the date from which he would have been required, under section 19, to contribute to the Superannuation Fund if he had become a contributor to that Fund.
(3) Where the salary of a contributor to the Provident Account is increased, contributions payable by him shall be payable as from the date from which the increased salary is payable.
(4) Where a contributor to the Provident Account is on leave of absence on the ground of illness, either without pay or at less than full pay, he is liable to pay the contributions which he would have been liable to pay if he had not been absent, but the Board may, upon his application, permit him to pay those contributions in such smaller sums and during such periods as the Board approves.
(5) Where a contributor to the Provident Account is on leave of absence without pay otherwise than on the ground of illness:
(a) if the leave is not required, under the conditions of his employment, to be treated as not forming part of the period of his service--he is liable to pay the contributions that he would have been liable to pay if he had not been absent; and
(b) in any other case--he is not liable or entitled to pay contributions during the period of leave.
(6) The fortnightly salary of a contributor to the Provident Account who is paid salary in respect of periods other than a fortnight shall, for the purposes of this section, be ascertained as prescribed.