1. Subject to paragraph 3 below, where a safety representative is permitted to take time off in accordance with Regulation 4(2) of these Regulations, his employer shall pay him—
(a)where the safety representative's remuneration for the work he would ordinarily have been doing during that time does not vary with the amount of work done, as if he had worked at that work for the whole of that time;
(b)where the safety representative's remuneration for that work varies with the amount of work done, an amount calculated by reference to the average hourly earnings for that work (ascertained in accordance with paragraph 2 below).