(d) the proposed cross-appeal
37There is a further difficulty which militates against a grant of leave to the applicant. Although the respondent submitted that the matter was to be remitted because the arbitrator did not make a specific finding as to the deemed date of injury for the purposes of s 16, arguably that was not the basis upon which the Deputy President was minded to uphold the appeal. Rather, he upheld the appeal on the ground that there could be no finding of incapacity as the claimant had made no claim for weekly compensation and had suffered no economic loss when he left his employment with the applicant. However, the respondent proposed to challenge this conclusion by way of cross-appeal. It is therefore appropriate to consider the support for the Deputy President's conclusion, which was said to flow from the decisions of this Court referred to at [19] above.
38The first decision, GIO Workers, involved a claim by a worker's widow with respect to his death resulting from a melanoma caused by exposure to sunlight in the course of his employment. The worker was treated, suffering a brief period of incapacity in 1983; but the melanoma later metastasised, resulting in his death in 1993. The insurer argued that the injury was deemed to have happened at the time of his incapacity in 1983. The Court (Sheller JA, Priestley and Clarke JJA agreeing) held at 196:
"In the case of the worker's claim, the injury, being a disease of such a nature as to be contracted by a gradual process, is deemed to have happened at the time of incapacity.
...
[However,] for the purpose of the widow's claim, the worker's injury is deemed to have happened at the time of his death."
39As the Deputy President recognised, this case was authority for the proposition that a reference to incapacity, in s 16, is to the incapacity for which compensation is claimed. That is supported by the provision that the compensation is payable "by the employer who last employed the worker in employment that was a substantial contributing factor to the aggravation ...": s 16(1)(b).
40The decision in Alto Ford was to similar effect. In that case the worker had claimed both weekly and lump sum compensation in respect of an injury to his eye, which had originally occurred in 1976. He obtained compensation for that injury, but, in later employment, had further surgery to his eye and was incapacitated for a period before returning to work, in 1992. He ceased fulltime work in April 1996 because of his loss of vision. He claimed both weekly and lump sum compensation in July 1996. The trial judge had found that incapacity for the purposes of the weekly compensation payments had arisen in 1992 and for the purposes of a lump sum payment under s 66, in 1996. This reasoning was accepted by the Court at [18] (Sheller JA, Meagher JA and Cole AJA agreeing).
41The Deputy President distinguished Alto Ford on the basis that the incapacity identified in 1992 had resulted in an economic loss for which compensation was available. The Deputy President contrasted that position with that of the claimant who, while he "has an incapacity in the [Arnotts] sense, he has no economic loss from his incapacity and has not claimed weekly compensation": at [55]. (It will be necessary to refer shortly to the decision of the High Court in Arnotts Snack Products Pty Ltd v Yacob [1985] HCA 2; 155 CLR 171 ("Arnotts").)
42The third case relied upon by the Deputy President was Berkeley Challenge. Again, the case involved separate periods of incapacity and separate claims for compensation against different employers. The Deputy President relied upon the statement of Priestley JA (Clarke AJA agreeing) at [19], in dealing with the calculation of payments of weekly compensation during and after the "first 26 weeks of incapacity", that the provision (s 34) "makes it plain that incapacity, for the purposes of Division 2 [of Pt 3 of the Workers Compensation Act] is incapacity falling within the period during which a worker has become entitled to weekly payments of compensation for incapacity." Priestley JA further stated that incapacity had the same meaning in ss 15 and 16: at [29]. The Deputy President then stated (at [64]) that the relevant date of injury "was therefore not the date of the first incapacity but was the date of the incapacity for which compensation was claimed or entitled to be claimed." That proposition, he suggested, was inconsistent with reasoning of Fitzgerald JA in Berkeley Challenge at [50] that s 16(1)(a)(i) is "capable of operation when an injury results in an incapacity for which no compensation is claimed." It was, however, unclear whether the reference by Priestley JA to an entitlement to claim compensation added an element to which Fitzgerald JA did not refer, without any element of inconsistency.
43Consistently with the last point, the Deputy President referred to a fourth case, Stone, in which the Court had held that where there was "no claim or entitlement to claim" weekly compensation, s 16(1)(a)(i) did not fix a date on which the impairment injury happened. Rather, that date arose when the worker claimed lump sum compensation. In Stone, the appellant had suffered no loss when his incapacity first developed because he was already totally incapacitated for work as a result of an earlier and different injury. It was in that context that Handley JA stated at [5]:
"Incapacity referred to in s 16(1)(a) does not mean physical incapacity for work in the sense explained in [Arnotts] but means the incapacity for which weekly compensation is claimed."
44That conclusion was derived from GIO Workers and Berkeley Challenge. The Deputy President also referred to the reasoning of Hodgson JA in Stone at [37]:
"Berkeley Challenge shows that, if the claim under consideration is for weekly compensation based on incapacity, the relevant incapacity for the purposes of s 16(1)(a)(i) is incapacity giving rise to entitlement to weekly compensation. Thus, in such a case, incapacity first occurs when the physical incapacity results in some loss of wages, even if there had previously been incapacity in the Arnotts sense, not resulting in any loss of wages."
45In Arnotts, the claim for compensation arose not merely from an injury, but from the injury combined with the failure of the employer to provide suitable employment while the worker was partly incapacitated, pursuant to s 11(2) of the Workers' Compensation Act 1926 (NSW). The joint judgment of the majority (Mason, Wilson, Deane and Dawson JJ), identified two meanings of incapacity namely, "(a) physical incapacity for actually doing work in the labour market in which the employee works or may reasonably be expected to work; or (b) physical incapacity resulting in actual economic loss": at 173. In considering the meaning of incapacity in s 11, the joint reasons accepted that the term must refer to something other than an incapacity resulting in actual economic loss because the provision required that the compensation for incapacity not exceed the difference between that which he was earning and that which he remained capable of earning, a calculation which could reduce the compensation to nil without denying the existence of incapacity for work.
46There is a point of distinction between a provision capping payments and requiring an employer to provide suitable employment on the one hand and a provision deeming an injury to have happened at the time of incapacity, on the other. However, the authorities do not stand for the proposition that "the incapacity" referred to in s 16(1)(a) is one which gives rise to an entitlement to weekly compensation payments: rather, the authorities stand for the proposition that the existence of an incapacity must depend upon an entitlement to compensation, being an entitlement of the kind the subject of a claim, that is, one encompassing economic loss.
47The basis on which the Deputy President rejected the finding of the arbitrator appears to have been encapsulated in the following passages:
"69 As Mr Thoroughgood has not claimed weekly compensation, I infer that, like Mr Stone, he could not do so because he had no entitlement to that compensation, presumably because he suffered no economic loss as a result of his aggravation injury.
...
73 Just as no claim for weekly compensation was made in Stone, Mr Thoroughgood made no such claim. It follows that the incapacity found by the Arbitrator could not support a deemed date of injury of 10 October 2006 ...."
48If those passages imply that "incapacity" in s 16(1)(a) is only satisfied where there was a claim, or at least a proven entitlement to claim, weekly compensation, that arguably involves a misreading of the authorities. It ignores the statement of Hodgson JA in Stone that this reasoning applies "if the claim under consideration is for weekly compensation based on incapacity". If the claim is for another form of compensation, as the Deputy President correctly stated at [64], in the context set out at [42] above, "the relevant deemed date of injury was... the date of the incapacity for which compensation was claimed or entitled to be claimed."
49To the extent that incapacity must be reflected in an entitlement to claim for economic loss, the conclusion that incapacity was not established appears to be inconsistent with the Deputy President's later conclusion that the claimant had an entitlement to claim (and did claim) compensation for therapeutic treatment. That depended upon there being an injury causing incapacity leading to economic loss. The injury complained of caused a relevant incapacity identified as the swelling, veins popping and pain in the legs. There may have been an issue as to whether that claim gave rise to a deemed date of injury as at 8 or 12 September, rather than 10 October (a point relied on by the respondent), in which case it would have been necessary to make a relatively minor amendment to the application in the Commission, but almost certainly one which could have caused no prejudice to the applicant.
50On the other hand, the conclusion that incapacity was not established could have reflected the proposition that the claim for a lump sum for permanent impairment under s 66 was not in relation to the same incapacity as that for which the claim for medical or related treatment was made under s 60. However, that was not a point relied by the Deputy President; further, it would appear to be inconsistent with the need to establish the date of injury for the purpose of s 261(1) of the Workplace Injury Act, which is not dependent on the particular compensation claimed.
51In relation to the concession that the claimant needed to establish "incapacity", there was ambiguity as to the nature of the incapacity relied upon. In order to succeed against Inghams the worker had to establish that it was Inghams who last employed him in employment that substantially contributed to the aggravation of the condition for which he sought compensation under s 66. It is unlikely that he was conceding a need to establish an entitlement to claim weekly compensation, as that was not part of his claim.
52In these circumstances, there is sufficient doubt as to the legal basis on which the Deputy President found error on the part of the arbitrator to make it unlikely that the ultimate order of the Deputy President would be set aside on an appeal. There is also doubt as to the strength of the primary ground relied upon by the applicant, namely the nature of the "concession". The order of the Deputy President, remitting the matter for redetermination of the deemed date of injury, is sufficient to allow the remaining issue in the dispute to be determined.