Commonwealth Consolidated Regulations(subregulation 12 (1))
1 A person attending before the Commissioner because of his or her professional, scientific or other special skill or knowledge must be paid:
(a) if the person is remunerated in his or her occupation by wages, salary or fees -- an amount equal to the amount of wages, salary or fees not paid to the person because of his or her attendance; and
(b) in any other case -- an amount of $100 for each day on which he or she attends.
2 A person attending before the Commissioner, other than a person to whom clause 1 applies, must be paid:
(a) if the person is remunerated in his or her occupation by wages, salary or fees -- an amount equal to the amount of wage, salary or fees not paid to the person because of his or her attendance; and
(b) in any other case -- an amount of $60 for each day on which he or she so attends.
3 A person attending before the Commissioner must be paid a reasonable amount for allowances for:
(a) transport between the usual place of residence of the person and the place that he or she attends for that purpose; and
(b) if he or she is required to be absent overnight from his or her usual place of residence -- meals and accommodation;
up to a daily maximum of $400.