Applicant's submissions
22 The applicant contends, and the respondent denies, that the proper application of the test 'arising out of the … employment' at law involves a consideration of whether, on the facts as found, the employment could be said to have given rise to some increased risk of the respondent suffering injury in the sense that the employment either created such a risk where otherwise there was none, or at least materially increased it.
23 The applicant submitted that the two tests of liability under the Act - 'in the course of the employment' and 'arising out of the employment' - are alternative and separate, though they may overlap. Determining whether an injury 'arose out of employment' will involve a consideration of the ambit of employment, which was said to direct attention to the concept of the 'course of the employment'.
24 The applicant pointed out that the expression 'arising out of' poses a test which is not satisfied by a merely temporal connection. Rather, a causal connection is necessary: Roncevich. So much was common ground. The applicant submitted that the Tribunal had failed to observe and apply this test, and that instead (and erroneously) the Tribunal had treated merely temporal factors as sufficient to establish causation. The applicant argued that no causal connection existed between the respondent's injury and her employment. Relying on March v Stramare (1991) 171 CLR 506, Carslogie Steamship Co Limited v Royal Norwegian Government [1952] AC 292, and Chappel v Hart (1998) 195 CLR 232, the applicant asserted that a causal connection between 'employment' and 'injury' can only exist when some aspect of the employment can properly be said to have increased the risk of the injury being sustained. Temporal factors which merely secure the presence of the claimant at the place where, or at the time when, he or she is injured are not enough to forge a causal connection with the injury without that increase in risk: March v Stramare per Mason CJ at 516.5. That doctrine, adopted for tortious liability also applies in workers' compensation cases: the test is the same. In Migge v Wormald Bros Industries Limited (1972) 2 NSWLR 29 at 44, in a judgment endorsed by the High Court on appeal, see Migge v Wormald Bros Industries Limited (1973) 47 ALJR 236 per Barwick CJ, McTiernan, Menzies, Gibbs and Stephen JJ), Mason JA said:
'Moreover, the expression takes up the concept of causation as it is known to the law, without seeking to modify it. In Baker v Willoughby in an opinion which commanded the assent of a majority of the House Lord Reid said that causation in tort does not differ from causation under the workers' compensation legislation. In that field and in cases concerning liability for personal injury it has been emphasized repeatedly that questions of causation are to be resolved by the application to the facts of the case of common sense, rather than scientific or logical theories of causation.' (References omitted.)
I note that the question in Migge was one of whether an injured worker who decided to undergo an operation against medical advice had thereby introduced a novus actus interveniens so as to break a causal chain of claimed incapacity necessitated by the relevant statutory phrase: 'results from'.
25 In light of these authorities, the applicant argued that it was incumbent upon the Tribunal to ask itself, and answer, the following question: did any of the four factors identified by the Tribunal separately, or in combination, increase the risk of the respondent being injured? The Tribunal had not asked itself this question, as demonstrated by the absence of any reasoning directed to that topic in the 'Reasons for Decision'. Rather, the Tribunal identified temporal factors which merely secured the presence of the respondent at the place where, and at the time when, she was injured. The applicant argued that, however broad an interpretation is given to the words 'arising out of', they still pose a test of causation which is not satisfied by merely temporal connections (of time and place).
26 The applicant submitted that the four factors relied upon by the Tribunal were simply contextual factors which helped explain the time and place at which the respondent sustained her injury. Those factors would have been rendered wholly immaterial had the respondent decided to go away from the base for the time she was rostered off. While, in one sense, it may be true to say that, were it not for the respondent's employment she would probably never have met the assailant and would not have been living on the RAAF Fairbairn base etc, and so may never have sustained the particular injury in question, the 'but for' test has been decisively rejected as a reliable test of causation, in favour of common sense. Thus, while it was conceded that, but for the respondent's decision to stay on the RAAF Fairbairn base during her rostered time off, she would not have been injured at that time and place, as a matter of common sense causation, that decision could not be regarded as causally related to the employment nor to the injury itself.
27 Counsel argued that the true basis for the Tribunal's finding that the respondent's employment caused her injury arose from only two factors: first, that she and another employee were permitted to live on the RAAF Fairbairn base; and second, that the injury occurred on the base as a result of the actions of that other employee. Thus, although the Tribunal purportedly identified four relevant factors, all four related to 'living on Base'.
28 The applicant also distinguished Roncevich. The army base where the accident occurred in Roncevich was also the veteran's place of work, RAAF Fairbairn was not the respondent's place of work. The social function the respondent attended was not work-related, whereas in Roncevich it was. Unlike Roncevich, the respondent consumed no alcohol supplied or subsidised by the RAAF at that social function. Similarly, in the present case, there was no expectation on the part of the RAAF that the respondent consume alcohol at that social function, let alone to the point of intoxication - such an expectation existed in Roncevich. Finally, in the present case, and unlike the circumstances in Roncevich, the respondent's injury did not occur in the course of a momentary break in attending to work-related matters. Rather, she had not worked the day before and she was not rostered for duty the next day.
29 The applicant argued that in Roncevich, the High Court had in fact, though sub silentio, considered that various work-related factors could properly be regarded as having increased the risk of injury particularly Mr Roncevich's work-induced intoxication. Those employment factors were not mere ingredients in the context (or scene-setting) of the serviceman's injury. So much could be seen from the following :
· the High Court emphasised that to satisfy the 'arising out of the … employment' test connection between employment and injury must be a causal one;
· in context, the Court used the word 'temporal' of or denoting time or time and space';
· the Court had really considered that it was open to conclude that Mr Roncevich's injury 'arose out of or was attributable' to defence service because such service materially increased the risk of injury by entailing that Mr Roncevich had to iron his uniform for the next day; and
· Roncevich is consistent with the causal factors being confined to work-related factors which increased the risk of injury.
30 In the alternative, the applicant submitted that, if the Court should take the view that the Tribunal had not conflated temporal and causative factors, the Tribunal had failed to give any reasons as to why the four factors which it relied upon were regarded as having increased the risk of injury to the respondent.
31 As to s 6(1)(a), the applicant maintained that the 'but for' test there set out remains a test of causation (rather than temporal connection) when applied to injuries occurring otherwise than in the course of employment. In reliance on Kennedy v Telstra Corporation (1995) 61 FCR 160, counsel submitted that the 'but for' test has to be applied 'practically and in a commonsense way'. Furthermore, it was submitted that the Tribunal also failed to provide any reasoning in support of its finding that the 'but for' test contained in subsection 6(1)(a) of the Act was satisfied.
32 The respondent's reliance upon cases such as Hatzimanolis v ANI Corporation Ltd (1992) 173 CLR 473, Danvers v Commissioner for Railways (NSW) (1969) 122 CLR 529 and Military Rehabilitation and Compensation Commission v Clark [2006] FCA 306 was said to be misconceived because those cases dealt with 'in the course of employment' rather than 'arising out of employment', and in any case, were concerned with injuries which occurred in an interval or interlude within an overall period of work, rather than in intervals between such periods, as here. The respondent's reliance upon Repatriation Commission v Tuite (1993) 39 FCR 540 and Military Rehabilitation and Compensation Commission v Wall (2006) 88 ALD 1 was said to be misplaced as those cases concerned factors/incidents which occurred in the course of employment and which were held to have actually influenced the self-harming behaviour (smoking) which led, in turn, to injury. Furthermore, the respondent's reliance on Darling Island Stevedoring & Lighterage Co Ltd v Hankinson (1967) 117 CLR 19 was also said to be misplaced because it deals with 'a different problem in causation'. Finally, the decision in Federal Broom Co Pty Ltd v Semlitch (1964) 110 CLR 626 was said to support the applicant's, rather than the respondent's, case.
33 In Stojkovic v Telford Management Pty Ltd (1998) 16 NSWCCR 165 Judge Neilson reviewed the authorities and confirmed that the review indicated that a temporal connection between the place of employment and an injury (described in one case as a 'locality' injury), in the context of assaults between co-employees, is insufficient to establish a causal connection.
34 Following the conclusion of the hearing, the applicant produced further supplementary submissions as to s 6(1)(a).
35 First, the applicant noted that s 6(1)(a) had no equivalent in any other workers' compensation legislation ever in force in Australia, with the exception of s 9(2) of the Seafarers Rehabilitation and Compensation Act 1992 (Cth).
36 The applicant asserted without contradiction that there was nothing in the Explanatory Memorandum which shed light on the meaning of s 6(1)(a). However, the Minister's Second Reading Speech was said to be of assistance. On the basis of the examples referred to by the Minister as illustrative of the coverage of the provision - including acts of violence - the applicant submitted that s 6(1)(a) must be applied as a test of causation.
37 The only cases dealing with s 6(1)(a) are Kennedy and Schmid v Comcare (2004) 77 ALD 782. In Schmid, Weinberg J took a similar approach to that of Tamberlin J in Kennedy. His Honour considered that it could not have been Parliament's intention that the 'but for' test should be construed literally: a degree of 'proximity', going beyond temporal connections of time and place, was required under s 6(1)(a). This approach was said to be consistent with that taken by McMahon D P in Re Mulligan and Commission for the Safety, Rehabilitation and Compensation of Commonwealth Employees (1995) 36 ALD 699.
38 In the present case, for reasons earlier addressed, the facts established merely a temporal connection falling short of a causal nexus. Further, the Tribunal had failed properly to appreciate the need for a causal nexus. All of the four temporal factors upon which the Tribunal relied could apply equally to different scenarios which could hardly have been intended by Parliament to attract compensability. Counsel gave as an example the supposition of an injury to Ms Roberts at the same time and place resulting from 'a temper tantrum thrown by a colleague in the course of a private argument'.
39 In any case the four temporal factors relied upon by the Tribunal were wholly incapable of supporting a finding that, but for those four factors, the respondent would not have been assaulted. No other factors were identified by the Tribunal in its application of the 'but for' test under s 6(1)(a).