§ From every workman employed in an insured trade for every week he is so employed, 2½d.
§ From every employer by whom one or more workmen are employed in an insured trade, in respect of each workman, for every week he is so employed, 2½d.
§ Every such period of employment of less than a week shall for the purposes of this Part of this Schedule be treated as if it were employment for a whole week.