29.—(1) Where a claimant’s income consists of earnings from employment as an employed earner his average weekly earnings shall be estimated by reference to his earnings from that employment—
(a)over a period immediately preceding the benefit week in which the claim is made or treated as made and being a period of—
(i)5 weeks, if he is paid weekly; or
(ii)2 months, if he is paid monthly; or
(b)whether or not sub-paragraph (a)(i) or (ii) applies, where a claimant’s earnings fluctuate, over such other period preceding the benefit week in which the claim is made or treated as made as may, in any particular case, enable his average weekly earnings to be estimated more accurately.
(2) Where the claimant has been in his employment for less than the period specified in paragraph (1)(a)(i) or (ii)—
(a)if he has received any earnings for the period that he has been in that employment and those earnings are likely to represent his average weekly earnings from that employment his average weekly earnings shall be estimated by reference to those earnings;
(b)in any other case, the relevant authority shall require the claimant’s employer to furnish an estimate of the claimant’s likely weekly earnings over such period as the relevant authority may require and the claimant’s average weekly earnings shall be estimated by reference to that estimate.
(3) Where the amount of a claimant’s earnings changes during an award the relevant authority shall estimate his average weekly earnings by reference to his likely earnings from the employment over such period as is appropriate in order that his average weekly earnings may be estimated accurately but the length of the period shall not in any case exceed 52 weeks.
(4) For the purposes of this regulation the claimant’s earnings shall be calculated in accordance with Section 3 of this Part.