3.—(1) For the purposes of Parts II to V of the Contributions and Benefits Act (other than those of Schedule 8) and of any regulations made thereunder which relate to benefit under those Parts of that Act or regulations, the earnings of a claimant shall be calculated by determining in accordance with these Regulations the weekly amount of his earnings.
(2) The amount of a claimant’s earnings for any period shall be the whole of his earnings (including any earnings which he is treated as possessing under regulation 4 (notional earnings)) except in so far as regulations 10 and 13 provide that certain sums shall be disregarded or deducted as appropriate.