(1) A person who attends to give evidence before a Commissioner is, in respect of that attendance, to be paid such fees and travelling expenses as the Commissioner allows in accordance with the scale in Part 4 of the Public Works Committee Regulation 2016 .
(2) The fees and travelling expenses are payable:
(a) in the case of a witness summoned at the request of the person to whom the investigation relates--by that person; and
(b) in any other case--by the Commonwealth.