79. (1) Subject to this Part, an investigation shall be conducted in such manner as the Commissioner thinks fit.
(2) An investigation shall be conducted with as little formality and technicality, and with as much expedition, as the requirements of this Act and any other relevant enactment and a proper consideration of the matters before the Commissioner permit.
(3) In conducting an investigation, the Commissioner—
(a) shall make a thorough examination of all matters relevant to the investigation;
(b) shall, subject to this Part, ensure that each party to the investigation is given a reasonable opportunity to present his or her case; and
(c) is not bound by the rules of evidence.
(4) The Commissioner may give such directions as to the procedure to be followed in an investigation and do such things as the Commissioner considers are necessary or expedient for the expeditious and just completion of the investigation.
(5) The Commissioner may at any time vary or revoke a direction given under subsection (4).
(6) Subject to subsection (7), it is not necessary for a complainant or respondent to be afforded an opportunity to appear before the Commissioner in connection with an investigation.
(7) The Commissioner shall not give a direction under section 89 or 90 that is adverse to a complainant or respondent unless the Commissioner has afforded that person an opportunity to appear before the Commissioner and to make submissions, orally or in writing, or both, in relation to the relevant matter.