"336 Deduction for expenses: the general rule (1) The general rule is that a deduction from earnings is allowed for an amount if – (a) the employee is obliged to incur and pay it as holder of the employment, and (b) the amount is incurred wholly, exclusively and necessarily in the performance of the duties of the employment."
"moneys expended in the performance of his official duties. He did not incur these expenses in conducting professional inquiries or get the journals to read them to patients … He incurs the expenses in qualifying himself for continuing to hold the office …"
"In the performance of the said duties means in the course of their performance … in doing the work of the office … It does not include qualifying initially to perform the duties of the office or even keeping qualified to perform them … It does not mean adding to [his] usefulness in performing his duties."
"the question the Commissioners had to ask themselves was whether the reading of [the newspapers] should be regarded as a means of maintaining the general qualifications and fitness of the taxpayers to carry out the employments they held, or whether it formed part of the daily duties of those employments."
"All the authorities distinguish between expenditure incurred in the performance of duties (which is deductible) from expenditure incurred to put the taxpayer in a position to perform the duties (which is not)."
"The principle to be derived from the authorities is that there is a distinction between the nature of the job requiring the incurring of the expenditure, and the expenditure enabling the person to do the job better …"
"First, it has to be shown that the expense has been incurred in order to discharge a duty of the employment. Whether or not a particular operation is a duty of the employment has to be determined objectively by answering the question "
"The journalists in the present case chose to spend several hours a day reading a formidable mass of newsprint dealing with the events of yesterday. In my opinion, they were not, in the course of that reading, engaged in the performance of the duties for which they were paid."