(See also Butler v Egg and Egg Pulp Marketing Board (1966) 114 CLR 185 at 191 per Taylor and Owen JJ; Johnson v Perez (1988) 166 CLR 351 at 355 per Mason CJ, 367 per Wilson, Toohey and Gaudron JJ, 386 per Dawson J; Haines v Bendall (1991) 172 CLR 60 at 63 per Mason CJ, Dawson, Toohey and Gaudron JJ; Manser v Spry at 434 per Mason CJ, Brennan, Dawson, Toohey and McHugh JJ.)
81 Frequently, a person who has been injured either actually receives, or will receive, from someone other than the tortfeasor who has caused the injury, payments or services that compensate for or ameliorate to some extent the consequences of the injury. Those payments or services might be provided pursuant to a contract that the injured person had entered, such as a contract of insurance. They might be provided pursuant to a statutory scheme for the provision of social security benefits to the population at large, such as an invalid pension for blindness (The National Insurance Co of New Zealand Ltd v Espagne (1961) 105 CLR 569), or unemployment benefits (Redding v Lee (1983) 151 CLR 117). It might be that the benefits or services that are paid or provided under a statutory scheme that is designed to assist some particular section of the public concerning the consequences of personal injury, like workers' compensation legislation (Manser v Spry [1994] HCA 50; (1994) 181 CLR 428) or the Dust Act itself (CSR Ltd v D'arcy (1996) 40 NSWLR 721; James Hardie & Co Pty Ltd v Newton (1997) 42 NSWLR 729). The benefit or service might be provided as a matter of affection or family loyalty. It might be provided as a matter of charity.
82 There is a fairly obvious unfairness about benefits provided as a matter of charity, affection or family loyalty being deducted from damages, and the existence of a right of subrogation concerning benefits under at least some contracts of insurance provides one reason (though not necessarily the fundamental reason) why it is inappropriate to take such benefits into account as reducing the damages payable by a tortfeasor. However, as Dixon CJ said in Espagne at 572, "intuitive feelings for justice seem a poor substitute for a rule antecedently known …".
83 The problem of whether the value of a benefit or service that an injured person has received or will receive is to be deducted from the damages that the tortfeasor must pay, has been held to be one of whether such a benefit "is to be regarded as mitigating" the harm that the tortfeasor has caused: Espagne at 597 per Windeyer J, with whom Fullagar J agreed (at 576) and Dixon CJ also agreed generally (at 574). When Windeyer J says that the question is whether the benefit "is to be regarded as mitigating" the harm, he is not talking about whether the benefit as a matter of fact causes the harm suffered by the inured person to be less. Before Espagne, one way in which the law had sought to distinguish those benefits that went in reduction of a tortfeasor's damage from those that did not, was by using (expressed in different ways) the concept that if the tortious conduct was "not really the cause" of the injured person receiving the benefit, then it need not be taken into account. Sometimes this was expressed by saying that the tortious conduct was merely "the occasion" for providing the benefit and that its true cause lay in, for example, the terms of employment of the worker (eg, Payne v Railway Executive [1952] 1 KB 26). Other cases sought to make the distinction by an imprecisely expressed allusion to the nature of the connection between the receipt of the benefit and the tortious conduct, such as by saying that the advantage was "collateral", or was "res inter alios acta". Attempts to find the relevant source of difference in such notions of causation or type of connection were firmly rejected in Espagne (Dixon CJ at 572, Windeyer J at 589-597). The question of whether the advantage "is to be regarded as mitigating" the harm, is one of whether the law ought to allow the fact that that advantage has been received to reduce the wrongdoer's damages. In other words, it is another way of posing the question of how one differentiates those benefits that are to be deducted from damages from those that are not.
84 The answer that Windeyer J gave, at 598-9, was:
"The most satisfying of the reasons that have been given for refusing to diminish damages because of voluntary gifts is that they are given for the benefit of the sufferer and not for the benefit of the wrongdoer. That, it may be said, cuts across the principle that damages for negligence are compensatory and not punitive. It may be that, at all events since Bradburn's Case (1874) LR 10 Ex 1, there are some limits to strictly logical applications of that principle. But I do not think the two propositions necessarily come into collision. A donor can say who is to benefit by his generosity. If, out of sympathy for a man unfortunately responsible for a motor accident, someone gives money to the victim, stating that he does so in the interest of the tortfeasor and to diminish the damages he must pay, effect must be given to his intention. If, on the other hand, the donor's expressed intention is that the injured man shall enjoy his bounty in addition to whatever rights he may have to recover damages from the tortfeasor, effect must in my opinion, be given to that intention. And if nothing be said, the intention of the giver may be inferred from the circumstances."
85 He concluded, at 599-600:
"In assessing damages for personal injuries, benefits that a plaintiff has received or is to receive from any source other than the defendant are not to be regarded as mitigating his loss, if: (a) they were received or are to be received by him as a result of a contract he had made before the loss occurred and by the express or implied terms of that contract they were to be provided notwithstanding any rights of action he might have; or (b) they were given or promised to him by way of bounty, to the intent that he should enjoy them in addition to and not in diminution of any claim for damages. The first description covers accident insurances and also many forms of pensions and similar benefits provided by employers: in those cases it is immaterial that, by subrogation or otherwise, the contract may require a refund of moneys paid, or an adjustment of future benefits, to be made after the recovery of damages. The second description covers a variety of public charitable aid and some forms of relief given by the State as well as the produce of private benevolence. In both cases the decisive consideration is, not whether the benefit was received in consequence of, or as a result of the injury, but what was its character: and that is determined, in the one case by what under his contract the plaintiff had paid for, and in the other by the intent of the person conferring the benefit. The test is by purpose rather than by cause.
Nevertheless it is not, I think possible, to enunciate an exhaustive rule for all parts of this vexed topic. And the questions that arise can never be determined in the abstract. Each must depend on the terms of the particular contract, pension scheme, charitable benefaction or statute governing the benefit conferred."
86 Dixon CJ said, at 573:
"There are certain special services, aids, benefits, subventions and the like which in most communities are available to injured people. Simple examples are hospital and pharmaceutical benefits which lighten the monetary burden of illness. If the injured plaintiff has availed himself of these, he cannot establish or calculate his damages on the footing that he did not do so. On the other hand there may be advantages which accrue to the injured plaintiff, whether as a result of legislation or of contract or of benevolence, which have an additional characteristic. It may be true that they are conferred because he is intended to enjoy them in the events which have happened. Yet they have this distinguishing characteristic, namely they are conferred on him not only independently of the existence in him of a right of redress against others but so that they may be enjoyed by him although he may enforce that right: they are the product of a disposition in his favour intended for his enjoyment and not provided in relief of any liability in others fully to compensate him. This is readily seen in the case of benevolence. If a fund is raised by subscription for the benefit of a badly injured neighbour obviously this cannot operate in relief of the liability of a man who negligently caused the injury. So in a contract of accident insurance; where in the absence of special stipulation the insurer will not succeed by subrogation or otherwise to the insured's right of recourse against others in the case of injury by their negligence. But for the reason given it does not follow that the negligent parties can treat the insurance as operating in relief of their liability. It was effected by the money of the plaintiff for his own benefit in the event of an accident, a benefit both independent of and cumulative upon whatever right of redress against others might arise out of the circumstances of the accident."
87 In Adams v Ascot Iron Foundry Pty Ltd (1968) 72 SR (NSW) 120 this Court considered an employer's appeal against a jury verdict in favour of a worker who had contracted a dust disease in the course of his employment. The worker had received benefits under the then version of the Dust Act, but the judge had excluded from the jury evidence relating to the receipt and quantum of those benefits. While each of Sugerman, Walsh and Asprey JJA agreed in an order that there be a new trial limited to damages, and that the trial judge had been wrong to exclude evidence of the benefits received, they differed about the manner in which the right to benefits should be taken into account in assessing the damages. Sugerman J, at 129, noted that under the Act, provided the preconditions in section 8(1) were met "the award or rate of compensation is no mere matter of administrative discretion". He held (applying Windeyer J's test in Espagne) that the benefits "cannot … be held to be given by way of bounty to the intent that they should be enjoyed in addition to any claim for damages." He rejected the view that (applying Dixon CJ's test in Espagne at 573) "… they are conferred on him not only independently of the existence in him of a right of redress against others but so that they may be enjoyed by him although he may enforce that right". He held, at 129-30, that:
"… the correct method of preventing a double recovery here is by taking into account the payment received or to be received under the Act as a factor in assessing damages … [a]nd I am of opinion that the whole of such payments must be taken into account. They are made as compensation for the worker's disablement by the disease of silicosis under stated conditions, and it appears to me to be impossible to apportion them as between different periods of deterioration or aggravation of the worker's condition." (emphasis added)
88 I adopt the précis that Handley JA gave in Commercial Minerals Pty Ltd v Hollins [1993] NSWCA 74 (unreported, but accessible in Caselaw in the 1993 archive of Court of Appeal decisions) at 6 of the Caselaw version, that in Ascot this Court:
"… held that both past and future benefits under the Act should be taken into account in assessing a worker's damages. See per Sugerman JA at 127G and 129G, per Walsh JA at 137D and 138D-E, and per Asprey JA at 141A."
89 Asprey JA, at 140-1 of Ascot, said:
"In my opinion, payments received by a worker by way of compensation in pursuance of an award made under the Act are not a bounty. If a worker is able to demonstrate that he is qualified in accordance with the provisions of the Act for an award, he is entitled to receive compensation at the prescribed rates. The fact that the worker requires the certification of the medical authority that his disablement was due to the disease defined in s 3 as well as the finding of the committee that he was a worker engaged in the occupation which the Act covers is no ground for arguing that the Act does not create an enforceable right to the benefits which it provides; nor does the fact that the nature of the disease makes it difficult to define with precision the date of its onset provide a satisfactory ground for such an argument."
90 It is important that in Ascot the worker was already receiving benefits under the Dust Act at the time of his trial. Thus he had already gone through the assessment process, and hence one could conclude that he would in fact receive benefits under the Act in the future. What the court held in Ascot was that the benefits that he would in fact receive in future were deductible from his damages. The references that the judges there made to the benefits being receivable as of right, not as a matter of discretion, were directed to the question posed in Espagne, of whether there was a legislative intention that benefits that in fact lessened a worker's loss from an injury should be kept in addition to the damages.
91 In Manser v Spry, at 436, the joint judgment, after citation from Espagne, said:
"To ascertain whether a statutory benefit possesses the 'distinguishing characteristic' that it is to be enjoyed independently of, and cumulatively upon, the right to damages, the court must endeavour to discover the intention of the legislature."
92 Their Honours then identified:
"…three possible indicia of a relevant legislative intention: the financial source of the benefit, the presence of a provision which requires a repayment of a statutory benefit out of the damages awarded or paid and the nature of the benefit."
93 There is no provision in the Dust Act or any connected legislation that provides for benefits to cease, or for the worker to repay any of the benefits received in the past, if the worker receives an award of damages. Thus, the second of those "possible indicia" was not present in this case.
94 Their Honours explained what they meant by the first of the indicia at 436, saying:
"If a scheme for provision of a benefit be funded by contributions made by employers and employee-beneficiaries as a kind of insurance against misfortune, the principle in Bradburn v Great Western Railway Co (1874) LR 10 Ex 1 indicates that the benefit is to be enjoyed by a beneficiary who encounters the misfortune without reduction of the damages to which he or she is otherwise entitled. That view has been taken of benefits paid under contributory pension schemes created under statute: Parry v Cleaver [1970] AC 1; Smoker v London Fire and Civil Defence Authority [1991] 2 AC 502; and see Redding v Lee (1983) 151 CLR at p 138."
95 Their Honours explained what they meant by the third of the indicia at 436-7 by saying:
"Whether an implication of such a legislative intention should be drawn depends largely on the nature of the benefit. Gibbs CJ said in Redding v Lee (1983) 151 CLR at p 125
'If the statute expressly provides (as some statutes relating to workers' compensation have done) that a plaintiff who has recovered damages shall repay the amount of the benefit it will be clear that the receipt of the benefit must be disregarded in the assessment. In many cases, however, the statute under which the benefit is provided will give no assistance of this kind. Then it will be necessary to consider closely the nature of the benefit itself. The conclusion that the benefit is intended for the plaintiff personally and not in reduction of the damages may more readily be drawn when it is seen that the receipt of the benefit is not dependent on the loss of wages or earning capacity ... for which the plaintiff claims damages (cf Parry v Cleaver [1970] AC at p 42, per Lord Wilberforce) and is not intended to replace the lost wages or remedy the loss of earning capacity."
96 The nature of the benefit had also been regarded as important in Espagne. The "hospital and pharmaceutical benefits which lighten the monetary burden of illness", that Dixon CJ at 573 regarded as deductible, are benefits that pay for goods and services that the plaintiff needs because he has been injured, and that the plaintiff would otherwise have to pay for. By contrast, an invalid pension for blindness is granted in the exercise of an administrative discretion, and cannot be obtained as of strict right (McTiernan J at 574-585). Unlike all other invalid pensions, the pension was not liable to be reduced if the pensioner's income exceeded a particular sum (Windeyer J at 585).
97 In Manser, the majority, at 437, approved a statement of Walsh JA from Adams, at 135, that if one has construed an Act, and if:
"… one cannot find any real indications pointing one way or the other, or if one finds indications both ways which are evenly balanced, it may be that the question must then be resolved by taking the view that the dominant rule [for assessment of compensatory damages] should operate."
98 Harris v Commercial Minerals Ltd (1996) 186 CLR 1 concerned proceedings brought by a worker against his successive employers. All of those employers had exposed him to dust in the course of his employment. The High Court held that the present value of the future benefits payable to the worker under the Dust Act should have been deducted from the worker's damages. The Court reached that conclusion by applying the three criteria that Manser had identified for ascertaining the legislative intention in establishing a regime for payment of benefits to an injured person. The Court held that both the first and the third of those criteria supported the deductibility of the future benefits.
99 Concerning the source of the benefit, the Fund was one to which employees made no contribution. The principle contributor to the Fund was employers, through their payment of insurance premiums. The Court said:
"It is difficult to conclude that Parliament intended that the employers should fund benefits paid for injuries suffered in the course of employment and at the same time have to make a payment by way of damages for those injuries." (at 17)
100 Their Honours also held that the nature of the benefit supported the conclusion that the benefit should be deductible. Their reasoning to that conclusion, at 18, was:
"The nature of benefits conferred by the Dust Diseases Act is that of compensation for economic loss suffered as the result of work injuries falling within the scope of that Act. The benefits are a form of workers' compensation payments. Section 8 prescribes as the rates of compensation payable to a person 'totally or partially disabled for work from a dust disease' (s 8(1) of the Dust Diseases Act ) the weekly payments set out in Div 2 of Pt 3 of, and Sch 6 to, the Workers Compensation Act 1987 (NSW) (see s 1 of the Dust Diseases Act ) in respect of workers employed 'in or about a mine to which the Coal Mines Regulation Act 1982 applies' (s 8(2) of the Dust Diseases Act ). Section 8(3) specifically applies certain provisions of the Workers Compensation Act to awards under the Dust Diseases Act . Section 8(6) of the Dust Diseases Act also provides that a person who receives benefits under that Act cannot claim workers' compensation. The purpose of the payments, therefore, is 'to remedy the loss of earning capacity' of the injured worker ( Redding (1983) 151 CLR 117 at 125). That being so, the nature of the benefit enjoyed under the Dust Diseases Act does not point to a legislative intention that the benefits should not be deductible from awards of damages in respect of injuries giving rise to those benefits.
Consequently, the common law courts should regard benefits under the Dust Diseases Act as compensation for injury and as a substitute or partial substitute for wages lost."
101 It appears from this passage that the High Court was dealing with only the benefits that were payable under section 8(2)(a) of the Dust Act, as it is under section 8(2)(a), in the form the Dust Act then had, that was payable "the weekly compensation payments prescribed by Division 2 of Part 3 of, and Schedule 6 to, the Principal Act in respect of workers employed in or about a mine to which the Coal Mines Regulation Act 1982 applies". The benefits payable under Division 2 of Part 3 of that Act were weekly payments, the computation of which was dependent upon the "current weekly wage rate" of the worker. Schedule 6, so far as relevant, extended that benefit to apply concerning disabilities that arose before the commencement of the Act. That explains their Honours' reference to benefits under the Dust Act being "a substitute or partial substitute for wages lost". The Dust Act at the time included section 8(2)(d), in the same terms as I have quoted at para [73] above, save only that the words "or occupation or rehabilitation service" did not appear in it. Thus the High Court's decision in Harris v Commercial Minerals may not be directly applicable to whether the cost of past medical treatment and the present value of future expenses and domestic assistance should be deductible. Even so, the nature of the benefits payable under the Dust Act under those heads is that they either reimburse the worker for expenses of that type already incurred, or save him from having to incur expenses of that type in the future. They are closely analogous to the "hospital and pharmaceutical benefits which lighten the monetary burden of illness" that Dixon CJ in Espagne held were deductible. The nature of the benefits supports them being deductible from damages.
102 In Harris v Commercial Minerals, the worker had already been medically assessed as 100% disabled (at 6). Thus he would in fact receive benefits under the Act in the future. The question that the Court was asking was, in effect, whether the legislative regime under which benefits would be paid showed an intention that the worker be able to keep the benefits in addition to his damages.
103 CSR Ltd v D'Arcy (1996) 40 NSWLR 721 related directly to whether benefits payable under the Dust Act for future medical expenses should be deducted from damages. The claim was brought by the worker not against his employer, but against a company that had supplied asbestos to his employer. It was already clear from Harris v Commercial Minerals that if the benefits had been ones that the worker had already received, or that it was clear the worker would receive in the future, the nature of the benefits, as amounts that saved the worker from spending money to make good some of the consequences of his dust disease, would be such that there was no legislative intention that they be received in addition to the amount of any damages. Thus, to give effect to the compensatory principle of damages, past benefits received, and the present value of any benefits that would be received in future, would be deductible from any damages.
104 The problem that arose in CSR v D'Arcy was different to whether the legislative intention was that benefits already received or to be received in the future, and that in fact lessened the loss that the injured worker suffered as a result of his injury, were to be kept by him in addition to damages. It arose from the fact that the worker had not sought benefits from the Board, and had indicated a firm intention that he would not seek them. As Giles AJA recorded at 738:
"… had Mr D'Arcy made an application under the Act it is all but inevitable that an award would have been made for his medical and hospital expenses. The likelihood is so strong that I consider it can be treated as a certainty."
105 The first instance judge had held (as recorded at 730):
"The essence of Harris is that payments under the Act had been made, were being made, and would be made in the future. No such circumstances exist in this case. There is therefore, in my view, no basis to make a deduction in respect of any payments or benefits in the past or likely to be made in the future."
106 That amounts to a finding that, notwithstanding the practical certainty of Mr D'Arcy's receiving the benefits if he were to apply, he would not in fact apply. The question that thus posed itself was whether, even so, the value of the future benefits should be deducted from the damages. It was a question about whether benefits that the worker had not received, and would not receive, should be deducted from his damages.
107 One can readily understand how a benefit that has actually been received, or that will actually be received, and that lessens part of the loss that an injured worker suffers, is deductible simply because, to the extent that the worker has received or will receive the benefit, his damage is that much less. But to reduce the damages because of a benefit that the worker has never received, and never will receive, is quite a different thing.
108 One argument considered was that there was a legislative intention that benefits that were provided for under the Act should be deducted from damages, even in the situation where those benefits had not been received, and it could not be decided that the benefits would be received in the future. A legislative intention of this kind is vastly different to the type of legislative intention that has been considered, in the line of cases that have followed Espagne. The kind of legislative intention that is relevant in Espagne and cases that have followed it concerns a situation where the benefits have been received or will be received in future, and the question is whether there is a legislative intention that benefits so received should be ones that the recipient can keep in addition to damages. If the benefit in fact lessens the harmful impact on a worker of an injury he has sustained, it is necessary to make a positive finding that there is such a legislative intention before the worker can keep the statutory benefit in addition to the damages.
109 The other argument considered was that any plaintiff has an obligation to the defendant to take reasonable steps to mitigate his damage, and Mr D'Arcy had failed to take the reasonable step of applying to the Board for the benefit that he would have received if he had only asked. When a plaintiff fails to take reasonable steps to mitigate his damage, the amount by which he would have lessened his damages, had he taken those reasonable steps, is properly deductible from his damages, despite the fact that the plaintiff has not received, and will not receive, that amount. Giles AJA observed at 732:
"Finding a legislative intention that unawarded but available benefits are to be deducted from the plaintiff's damages is quite a step from finding a legislative intention that benefits received and receivable under an existing award are to be deducted. And the ultimate touchstone that a plaintiff cannot recover an amount more than he has lost suggests that what matters is benefits received or receivable, and that available benefits are not to be taken into account simply because they are available."
110 Ultimately, Giles AJA could not find such a legislative intention. He said, at 737:
"But, unless more clearly expressed in the Act, it is not easy to find a legislative intention that benefits under the Act are to be a necessary and, to the extent of the compensation provided, sole source of compensation to workers suffering from dust diseases, and with the greatest of respect to Cole JA, whose reasons I have read in draft, I am unable to arrive at a statutory intention that the benefits must be availed of by workers to the extent to which they provide compensation for work related injuries. Workers have not been deprived of their common law rights, and they are not obliged to prosecute both a claim under the Act and, if they seek additional compensation, at common law. Of course, benefits received and receivable (that is, when an award has been made) must be deducted, and in most cases workers will apply for an award from the Board. Where a worker does not apply, the mitigation of loss approach will provide a suitable balance between the interests of workers and the interests of employers, since if the worker unreasonably declines to apply he will be found to have failed to mitigate his loss: so employers will be spared the kind of double payment and workers will not be over-compensated. If it is reasonable for a worker to decline to apply to the Board, it can hardly be said that there is injustice to the employer."
111 Abadee AJA agreed with Giles AJA, at 738 and 739, in preferring the mitigation of loss approach to the legislative intention approach.
112 Section 8E was added to the Dust Act by the Workers' Compensation Legislation Amendment (Dust Diseases and Other Matters) Act 1998, Schedule 6(13). The amendment made by section 8E does not, in my view, incorporate into the Dust Act an intention that unawarded but available benefits are to be deducted from a plaintiff's damages. Section 8E makes provision for what is to happen if a worker recovers damages from someone other than his employer and a deduction is made from the damages for the value of future benefits payable to the worker under the Dust Act. What it does not do is to cast any light, beyond that which was available at the time of the decision of CSR v D'Arcy, on whether such a deduction from damages should be made.
113 There was no application in the present case to reargue the correctness of CSR v D'Arcy. In that situation, I do not see that the enactment of section 8E enables me to reach a different conclusion to that which was arrived at in CSR v D'Arcy about whether there is a legislative intention that benefits that would be available if asked for are to be deducted from the damages.
114 If one were designing a scheme for the provision of benefits to workers affected by a dust disease that was fair to them, and that properly allocated the burden of paying benefits amongst the people responsible for the dust disease, there may well be a lot to be said for a scheme that gave the worker an assured source of payment for whatever medical expenses might arise from the disease for the rest of his life, provided for that to be the only source from which the worker could obtain those benefits, and then allocated the costs of providing those benefits between any tortfeasor who had caused the dust disease, and, as to any shortfall, to the operators of the sector of industry in which dusty occupations occur. However, CSR v D'Arcy held that the statutory scheme established by the Dust Act did not operate in that way in 1996. I do not see section 8E as effecting any change in the statutory scheme in that respect.
115 At the time of the High Court's decisions in Harris v Commercial Minerals, and of this Court's decision in CSR v D'Arcy the Dust Diseases Tribunal Act did not contain section 12D. That provision was inserted into the legislation by the Workers' Compensation Legislation Amendment (Dust Diseases and Other Matters) Act 1998. The Explanatory Memorandum said that that new section "deals with the decision in James Hardie & Co Pty Ltd v Newton (1997) 42 NSWLR 729." Newton held that a weekly pension that the plaintiff had received and would continue to receive under the Dust Act was deductible from common law damages in a situation where the worker made no claim for loss of past earnings or future earning capacity. In my view the introduction of section 12D does not alter the effect of CSR v D'Arcy concerning the circumstances in which benefits may be deducted from damages that are not for non-economic loss (the relevant type of damages in the present case).
116 In my view, it remains the law that if a worker has a legal right to apply for a benefit under the Dust Act, but has not applied for that benefit, the present value of that benefit can be deducted from damages only if either: