3 Part 4 of the Civil Liability Act 2002 (the Act) inserted by the Civil Liability Amendment (Personal Responsibility) Act No 92 of 2002 (the Amending Act) by s 35(1) amended the common law rule that a concurrent tortfeasor who was only partially to blame for an accident was liable for the whole of the plaintiff's damages and the concurrent fault of others was only relevant to his claims for contribution: Caledonian Collieries Limited v Speirs 57 SR NSW 483. Pt 4 of the act came into force on 1 December 2004 before Bestcare commenced proceedings against Origin. Schedule 1 of the Act as amended contains savings and transitional provisions. The provisions consequent on the enactment of the Amending Act are included in Pt 3. Cl 6(1) provides
The amendments to this Act made by the 2002 amending Act extend to civil liability arising before the commencement of the amendments, but do not apply to or in respect of proceedings commenced in a court before that commencement.
4 Thus prima facie Pt 4 inserted by the Amending Act applies to any liability that Origin may have for the explosion at Bestcare because its proceedings were not commenced until after the commencement of Pt 4 on 1 December 2004. However, s 3B(3) of the Act, also inserted by the Amending Act, relevantly provides
The regulations may exclude a specified class or classes of civil liability (and awards of damages in those proceedings) from the operation of all or any specified provisions of this Act. Any such regulation may make transitional provision with respect to claims for acts or omissions before the commencement of the regulation.
5 Cl 3 of the Civil Liability Regulation 2003 inserted by the Civil Liability Amendment (Proportionate Liability) Regulation 2004 also came into force on 1 December 2004 and provides
Any civil liability to which Part 4 of the Act would have applied but for this clause is excluded from the operation of that Part, and from the operation of clauses 6 and 13 of Schedule 1 to the Act in their application to that Part, if the liability arose before 26 July 2004.
6 This clause, if valid, would displace the operation of cl 6(1) of Pt 3 of Schedule 1 and cl 13 of Pt 4 of that Schedule and preserve the common law liability of Origin if it is a concurrent tortfeasor liable for that damage. Origin contends that cl 3 of the Regulation is invalid.