45 Section 151Z is not restricted to claims based upon tortious liability. The concept of "proceedings independent of this Act" extends to actions for breach of statutory duty (Grljak at 88) and is clearly capable of application to the rights against the appellant vindicated in the present case.
46 The trial judge declined to apportion damages, on the basis that the Council was not shown to have breached its duty of care not to expose the respondent to unnecessary risk of injury.
47 The respondent said that she had never seen the warning label. The tin of undiluted liquid contained no label or warning as to the use or dilution of the product. Mr Ling the cleaning supervisor told her to use gloves. He agreed in cross-examination that it would have been a better practice to have diluted the pure Power Kleen because of the risk. It was only after the accident that the respondent was given a document setting out the precautions to be employed when using the product.
48 The trial judge referred to Mr Ling's evidence about having seen the demonstration of the product when the demonstrator wore no gloves. He also recited Mr Ling's evidence that he directed the cleaners "according to the directions supplied by the first defendant from the information contained on the label" (judgment par 10.6, see also 10.3). It is unclear whether this represents a finding accepting that evidence. If it does, we have difficulty with this aspect of the judgment. Not only does it lie most uneasily with the respondent's unchallenged evidence which is summarised in the preceding paragraph. More significantly, it remains an inherently ambiguous finding. Mr Ling's evidence was that he thought he had told the cleaners that what was in the tin was undiluted, but he could not be sure that he had told the respondent. The evidence that comes closest to asserting that he directed the cleaners "according" to the label was his testimony that, having read the label, he told the respondent that she should apply Power Kleen by spraying or brushing or wiping the surface leaving it for a couple of minutes to penetrate and then rinsing it with water.
49 The ambiguities and variations in Mr Ling's evidence reflect his actual conduct. The cleaners were issued with undiluted liquid with no access to the limited warning on the appellant's drum. After the respondent reported problems she was supplied with gloves and she used them as directed. Even on Mr Ling's version taken at its highest, she was not told to ensure that the undiluted product not come in contact with her skin. She was then directed to perform a specific task that involved prolonged rubbing which, we would infer, broke the protection of the gloves. This caused the injury because the undiluted product rubbed onto her skin. Mr Ling's failure to bring home the risks involved in this was careless, even by the standards of the warning on the label. By providing the undiluted product without any or any sufficient warning about its capacity to injure he contributed to the respondent's injury.
50 In these circumstances the primary judge erred in concluding that there should be no reduction in the respondent's damages due to any apportionment against her employer.
51 Having found against the appellant on s52 of the Trade Practices Act the trial judge did not need to determine its liability in negligence. It will, we think, be apparent from our analysis of the South Australian case of Anderson that we would have no difficulty in translating our conclusions on the facts into a finding of negligence as well as a finding of breach of s 52 and its New South Wales counterpart. The right of contribution required to be taken into account by s 151Z(2)(a) is based upon entitlement "to recover from an employer as a joint tortfeasor or otherwise".
52 It was submitted that the appellant's putative right of contribution against the Council lay under general law principles and under s 5(1)(c) of the Law Reform (Miscellaneous Provisions) Act 1946.
53 The basic principle stemming from Dering v Earl of Winchelsea (1787) 1 Cox 318, 29 ER 1184 was described by Willes J in Moule v Garrett (1872) LR 7 Ex 101 at 103 as follows:
Where two persons are under an obligation to the same performance, though by different instruments, if both share the benefit which forms the consideration they must divide the burden; if one only gets the benefit he must bear the whole.
54 The inequality of burden stemming from the enforcement or satisfaction of a creditor's or plaintiff's rights against one person when recourse against another or both would have been more equitable is the basis of the obligation (cf Mahoney v McManus (1981) 180 CLR 370 at 388). The principles are not confined to obligations that derive from a single document or transaction and they extend to statutory obligations (see Armstrong v Commissioner of Stamp Duties (1967) 69 SR (NSW) 38; Albion Insurance Co Ltd v Government Insurance Office (NSW) (1969) 121 CLR 342. For a fuller discussion see Mason and Carter, Restitution Law in Australia, Ch 6, (Contribution and Recoupment)).
55 There must be a co-ordinate liability in the sense of the parties being under a common burden. For example, contributing sureties must be sureties in the same degree (Street v Retravision (NSW) Pty Ltd (1995) 56 FCR 588). However, a common or coordinate liability is not destroyed by the fact that the plaintiff may have framed a cause of action in one way or another (Jones v Mortgage Acceptance Nominees Ltd (1996) 63 FCR 418).
56 The principles relating to coordinate liability have permitted contribution between directors subjected to statutory obligations imposed by the Corporations Law (Spika Trading Pty Ltd v Harrison (1990) 19 NSWLR 211). In other cases, where total recoupment is appropriate, orders can be made directed to that end (eg Armstrong). In our view these principles are capable of application in determining rights of contribution as between the appellant and the Council.
57 But can equity do anything but apportion equally?
58 In Jones (at 422) Davies J said that he could see no reason why equity "should not aid … the ascertainment of what would be a just contribution". Equity has always looked to the substance and sought to apportion rateably and fairly (Spence, Equitable Jurisdiction (1846) vol 1, pp 662-3). At least in the area of insurance, equity's search for "reason, justice and law" (Albion at 351 per Kitto J, citing Marsack v Webber (1860) 6 H&N 1 at 6, 158 ER 1 at 3) has not invariably confined itself to strict equality (American Surety Co of New York v Wrightson (1910) 103 LT 663, Government Insurance Office of New South Wales v Crowley [1975] 2 NSWLR 78, Commercial Union Assurance Co Ltd v Hayden [1977] 1 QB 804).
59 However, in Bialkower v Acohs Pty Ltd (1998) 83 FCR 1 at 12-13 the Full Court of the Federal Court doubted whether, apart from statute, a court could order anything but proportional contribution or full indemnity. The Court observed that equity gave effect to its maxim that "equality is equity" and, until statutory intervention, took no intermediate position between the two extremes. The Full Court noted the point but did not resolve it.
60 At this stage we turn to the alternative basis of contribution, s5(1)(c) of the 1946 Act.
61 The application of s 5(1)(c) to claims lying solely within the scope of s52 and s82 of the Trade Practices Act is problematic (see Bialkower at 11). The better view is that s 52 is not to be seen as creating a liability in tort. (Bialkower. See also Marks v GIO Australia Holdings Ltd (1998) 158 ALR 333 at [17]).
62 However, the capacity to use s 5(1)(c) in cases where liability could have been established in tort but was not has been discussed in several cases (see Bialkower at 7-11). It has been held that it is open to a defendant (ie the appellant in the present case) to seek statutory contribution if the facts would establish such entitlement even though the cause of action upon which the party is seeking contribution is not itself an action in tort (see Employers Corporate Investments Pty Ltd v Cameron (1977) CLC ¶40-365, Rap Industries Ltd v Royal Insurance Australia Ltd (1988) 5 ANZ Ins Cas ¶60-876 at 75,519-75,520, AWA Ltd v Daniels (1992) 7 ACSR 759 at 856-857).
63 In the present case the appellant was sued in tort in the alternative, and the facts established liability in tort. Accordingly, resort to the statutory power is open in the apportionment exercise. It is unnecessary to resolve the question whether the general law would permit apportionment otherwise than on a 50/50 basis.
64 The principles governing statutory apportionment amongst tortfeasors have been stated recently (Wynbergen v Hoyts Corporation Pty Ltd (1997) 149 ALR 25 at 29, Bitupave Ltd v McMahon [1999] NSWCA 330, James Hardie & Co Pty Ltd v Roberts [1999] NSWCA 314). Applying those principles, we would apportion 60% of responsibility to the appellant and 40% to the employer. The negligence of each contributed to the respondent's injury, but the negligence of the former was more potent in its causative impact and in its departure from a reasonable standard of care. It was a factor in Mr Ling's own neglect for the care of his fellow employee.
65 Accordingly, we would make the following orders:
1. Appeal allowed in part.