26 Section 152 of the Workplace Relations Act, a Commonwealth law, provided:
[s 152] Awards to prevail over State Laws and State awards
152(1) [Awards to prevail] Subject to this section if a State law or a State award is inconsistent with, or deals with a matter dealt with in, an award, the latter prevails and the former, to the extent of the inconsistency or in relation to the matter dealt with, is invalid.
(1A) [State laws making provision in respect of termination] If a State law provides protection for an employee against harsh, unjust or unreasonable termination of employment (however described in the law), subsection (1) is not intended to affect the provisions of that law that provide that protection, so far as those provisions are able to operate concurrently with the award.
(2) [State employment agreement previously in force] If:
(a) but for this subsection, an award would become binding on an employer in respect of an employee at a particular time; and
(b) immediately before that time, the wages and conditions of employment of the employee were regulated by a State employment agreement;
then the award is not binding on any person in respect of the employee, while the wages and conditions of employment of the employee continue to be regulated by the agreement
(3) [State employment agreement made after commencement of subsection (3)]. If, at a particular time, a State employment agreement that is made after the commencement of this subsection would regulate wages and conditions of employment of an employee but for the fact that an award is binding on an employer in respect of the employee, then:
(a) the award does not prevent the agreement from coming into force and regulating the wages and conditions of employment of the employee; and
(b) while the agreement continues to regulate those wages and conditions, the award is not binding on any person in respect of the employee.
(4) ["award"] In subsection (3), "award" does not include an award made under subsection 170MX(3)
(5) [Requirements for application of subsections (2) and (3)]. Subsection (2) and (3) do not apply to a State employment agreement unless the agreement is one that was approved by a State industrial authority under a State Act that required the authority, before approving the agreement, to be satisfied:
(a) that the employees covered by the agreement are not disadvantaged in comparison to their entitlement under the relevant award; and
(b) that the agreement was genuinely made, or that the agreement was not made under duress or that the agreement was made without coercion; and
(c) that the agreement covers all the employees whom it would be reasonable for the agreement to cover, having regard to matters (if any) specified in the State Act (such as the nature of the work performed under the agreement and the relationship between the employees in the part of the business covered by the agreement and the remainder of the employees in the business).
27 By reference to the judgment of Kirby P in Majik Markets Pty Ltd v Brake and Service Centre Drummoyne Pty Ltd (1992) 28 NSWLR 443 it was submitted that an inconsistency exists where there is a "textural collision" between the provisions of a Commonwealth and State Act. Even if there was no such collision an inconsistency would arise where the intention of a paramount legislature was, by its enactment, to completely exhaustively or exclusively express the law governing a particular conduct or matter (Clyde Engineering Co Pty Ltd v Cowburn (1926) 37 CLR 466; Ex parte McLean (1940) 43 CLR 472 at 403). An inconsistency arose where a law purports to confer a legal right, privilege or entitlement which the other law purports to take away or diminish (Colvin v Bradley Bros Pty Ltd (1943) 68 CLR 151).