(1) For the purposes of the Trade Practices Act 1974 of the Commonwealth and the Competition Code, the following things are authorised by this Act—
(a) the making of a code of practice;
(b) anything done by a person in order to comply with this Act, the regulations or a code of practice;
(c) anything done by a contractor or group of contractors preparatory to entering into, or in anticipation of, joint negotiations with a single business, including the appointment of a negotiating agent to conduct those joint negotiations;
(d) anything done by a negotiating agent, as authorised by this Act and in accordance with the agent's terms of appointment, in conducting joint negotiations with a single business;
(e) any dealings by a contractor or group of contractors with their negotiating agent for the purposes of conducting joint negotiations with a single business.
(2) For the purposes of this section—
(a) a "single business" is a business, project or undertaking that is carried on by one hirer;
(b) if 2 or more hirers carry on a business, project or undertaking as a joint venture or common enterprise, the hirers are taken to be one hirer;
(c) if 2 or more corporations that are related to each other for the purposes of the Corporations Act each carry on a single business—
(i) the corporations are to be treated as one hirer; and
(ii) the single businesses are to be treated as one single business.