Contributions in respect of earnings not paid at weekly intervals

(1) Where earnings are paid to an employed person for a period longer than a contribution week, the number of weeks of contribution in each of which such person is employed shall be equal to the number of Mondays in that period: Provided that the amount of earnings for such period shall be converted to weekly basis in such manner as the Board shall direct. (2) In cases to which paragraph (1) applies, if the contribution is required or authorised to be made by direct payment the amount of weekly contribution payable shall be computed as directed by the Board.