8 This passage summarises the purpose and broad effect of s151AC of the WC Act, which was introduced by Act No 130 of 1998, and with which this application is concerned.
9 Section 151AC is a long and complex provision and it is unnecessary to set it out in full. Subsection (1) states that the section applies in relation to an employer who is liable independently of the WC Act for damages for a dust disease contracted by a worker, where there is a dispute as to which of two or more insurers in a category of insurers is liable to indemnify the employer under any of the provisions of s151AB. In light of the obvious purpose of the section and the express provisions to which we refer later, the words "who is liable" should be read as including employers who are claimed to be liable.
10 Subsection (2) states that, for the purposes of s151AB, and pending resolution of the dispute (emphasis added), the insurer who is the "designated insurer" in the relevant category under the section is to be treated as being the insurer who is so liable to indemnify the employer. Subject to this stipulation, the subsection indicates that s151AB has effect, and is to be construed, accordingly.
11 Subsection (3) describes in detail how the designated insurer is to be identified in different circumstances. Nevertheless, subs (4) provides that the insurers in a category may agree as to which of them is to be the designated insurer. Absent agreement, the Dust Diseases Tribunal is also empowered by that subsection to order that any one of them is to be the designated insurer. Any such agreement or order overrides subs (3).
12 Subsection (5)(a) provides, by way of addition to the provisions of s151AB, that the designated insurer who is the insurer liable under s151AB(1) is to act for all the insurers in the relevant category "in the carriage of the insurance aspects of the claim". (Subs 5(b) makes a corresponding provision with respect to the designated insurer who is the insurer primarily responsible under s151AB(2).) The expression "carriage of the insurance aspects of the claim" is not defined.
13 Subsection (6) gives the other insurers in dispute the right, with the leave of the Tribunal, to make submissions to the Tribunal relating to the amount of damages payable to or in respect of the worker.
14 Several provisions make it plain that, when appointed, the designated insurer will, as insurer, exercise the rights and duties of the employer with reference to the litigation. Thus, the designated insurer is "pending resolution of the dispute …is to be treated as being the insurer who is … liable to indemnify the employer" (subs (2)). That insurer is "to act for all the insurers in the relevant category … in the carriage of the insurance aspects of the claim" (subs 5(a)). The task may not be easy and problems and conflicts may arise for which litigants and courts will need to devise appropriate procedures. However, it is difficult to envisage a clearer legislative statement that, as a general rule, the interests of the plaintiff in the speedy determination of the main claim are not to be prejudiced or impeded by disputes among the insurers.
15 The dispute as between the various insurers in the relevant category or categories is intended by s151AC to be resolved separately from the plaintiff's dispute with the employer. Subsection (7) provides expansively that the dispute may be resolved "by such processes as the parties to the dispute agree or as are otherwise available". Subsection (8) provides, as a final resort, that the dispute is to be resolved by arbitration under s38 of the Dust Diseases Tribunal Act 1989, unless the Dust Diseases Tribunal otherwise orders. Section 38 was also inserted by Act No 130 of 1998. It contemplates the making of rules dealing with every conceivable aspect of that type of dispute resolution. Specifically s38(2)(d) contemplates that the rules may require the plaintiff and other persons to give evidence at an arbitration. (The possibility that evidence might be taken on commission for the purpose of such arbitration if circumstances required was touched upon in argument, but this was not a matter considered in the context of the present case.)
16 So much for the general thrust of s151AC. Its obvious policy is properly to be given effect in the exercise of any judicial discretion touching the proceedings. Parliament has spoken clearly about the priority of the plaintiff's procedural interests, in the first instance. But the provision is not a straitjacket. Flexibility and innovation are clearly contemplated (see, eg subs (4) and (7)).
17 In this category of intended flexibility, reference should be made to s33(4)(n) of the Dust Diseases Tribunal Act 1989, a provision also inserted by Act No 130 of 1998. It is referred to in the last sentence of the passage from the Minister's second reading speech which is quoted in par 7 above. That power has been exercised in r12 of the Dust Diseases Tribunal Rules, which commenced from 18 December 1998. The rule provides that the Tribunal:
may if it thinks fit order that all or any of the provisions of section 151AC of the Workers Compensation Act 1987 do not apply in or in relation to a particular case or in relation to a particular insurer:
(a) on its own motion, or
(b) on application by a party or by an insurer who is not a party.