“337(1) A deduction from earnings is allowed for travel expenses if— (a) the employee is obliged to incur and pay them as holder of the employment, and (b) the expenses are necessarily incurred on travelling in the performance of the duties of the employment. (2) This section needs to be read with section 359 (disallowance of travel expenses: mileage allowances and reliefs). 338(1) A deduction from earnings is allowed for travel expenses if— (a) the employee is obliged to incur and pay them as holder of the employment, and (b) the expenses are attributable to the employee’s necessary attendance at any place in the performance of the duties of the employment. (2) Subsection (1) does not apply to the expenses of ordinary commuting or travel between any two places that is for practical purposes substantially ordinary commuting. (3) In this section “ordinary commuting” means travel between— (a) the employee’s home and a permanent workplace, or (b) a place that is not a workplace and a permanent workplace.”
“ (1) In this Part “workplace”, in relation to an employment, means a place at which the employee’s attendance is necessary in the performance of the duties of the employment. (2) In this Part “permanent workplace”, in relation to an employment, means a place which— (a) the employee regularly attends in the performance of the duties of the employment, and (b) is not a temporary workplace. This is subject to subsections (4) and (8). (3) In subsection (2) “temporary workplace”, in relation to an employment, means a place which the employee attends in the performance of the duties of the employment— (a) for the purpose of performing a task of limited duration, or (b) for some other temporary purpose. This is subject to subsections (4) and (5). (4) A place which the employee regularly attends in the performance of the duties of the employment is treated as a permanent workplace and not a temporary workplace if— (a) it forms the base from which those duties are performed, or (b) the tasks to be carried out in the performance of those duties are allocated there. (5) A place is not regarded as a temporary workplace if the employee’s attendance is— (a) in the course of a period of continuous work at that place— (i) lasting more than 24 months, or (ii) comprising all or almost all of the period for which the employee is likely to hold the employment, or (b) at a time when it is reasonable to assume that it will be in the course of such a period. (6) For the purposes of subsection (5), a period is a period of continuous work at a place if over the period the duties of the employment are performed to a significant extent at the place.”