EIM32415 | Other expenses: assistant's wages: when a deduction may be given
From HM Revenue & Customs · Employment Income Manual
As a general rule no deduction can be given under Section 336 ITEPA 2003 for the payment of wages to an assistant, see EIM32410. There are a number of exceptions to this rule.
A deduction can be given in the following circumstances:
where the employee is paid solely by results so that, in taking on assistance, the employee can maximise his or her earnings from the employment. Examples include examiners who pay others to carry out arithmetical checks of marks, see EIM62910.
For the amount of the deduction to be given see EIM32420.