"1(1) An employer shall not make any deduction from any wages of any worker employed by him unless the deduction satisfies one of the following conditions, namely - (a) it is required or authorised to be made by virtue of any statutory provision or any relevant provision of the worker's contract; or (b) the worker has previously signified in writing his agreement or consent to the making of it."
"(1) In this Part 'wages', in relation to a worker, means any sums payable to the worker by his employer in connection with his employment, including - (a) any fee, bonus, commission, holiday pay or other emolument referable to his employment, whether payable under his contract or otherwise;
"5(4)(b) ... the Tribunal shall order the employer to pay ... to the worker any amount" [of any deduction]."
"Where ... a Tribunal finds that, although neither of the conditions set out in s.1(1)(a) and (b) was satisfied with respect to the whole amount of a deduction ..., one of those conditions was satisfied with respect to any lesser amount, the amount of the deduction ... shall for the purposes of subsection (4)(a) be treated as reduced by the amount with respect to which that condition was satisfied."