New South Wales v Commonwealth

The parties to this case were the Commonwealth of Australia (defendant) and the States of New South Wales, Western Australia, South Australia, and Queensland, along with the Australian Workers' Union and Unions NSW (plaintiffs). The dispute concerned the constitutional validity of the *Workplace Relations Amendment (Work Choices) Act 2005* (Cth), which significantly altered the *Workplace Relations Act 1996* (Cth). The plaintiffs challenged the Act, arguing it exceeded the Commonwealth Parliament's legislative powers. The High Court of Australia was required to determine the constitutional validity of the Amending Act.

The central legal issues before the Court were whether the Commonwealth Parliament possessed the power to regulate employment relationships under section 51(xx) of the Constitution, which grants power over "foreign corporations, and trading or financial corporations formed within the limits of the Commonwealth," and whether this power was limited or confined by section 51(xxxv), which deals with conciliation and arbitration for the prevention and settlement of industrial disputes extending beyond one State. The Court also considered the validity of specific provisions of the Amending Act in relation to other constitutional heads of power, including section 122 (Territories), and whether certain sections impermissibly encroached upon State legislative power and the capacity of States to function as governments. The Court was asked to determine if the Amending Act was a comprehensive and integrated measure, and if its substance and character were primarily related to industrial affairs, as defined by section 51(xxxv).

The Court reasoned that the *Workplace Relations Amendment (Work Choices) Act 2005* was invalid. It held that the Constitution should be construed as a whole and that the Amending Act was presented as a comprehensive and integrated measure. The Court found that the substance and character of the Act related to industrial affairs, and that the Commonwealth's power in this area was primarily derived from section 51(xxxv) of the Constitution, which concerns conciliation and arbitration for industrial disputes. The Court concluded that the corporations power under section 51(xx) did not extend to the regulation of industrial relations in the manner attempted by the Amending Act, and that any apparent power under section 51(xx) must be subject to the implied restriction imposed by section 51(xxxv). Furthermore, the Court found that the Amending Act trespassed upon essential functions of the States and would constitute an unacceptable distortion of the federal balance.

The Court allowed the defendant's demurrer to the statement of claim and entered judgment for the defendant with costs.