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[2008] WASCA 250
respondent. Leave to appeal refused; the commissioner's decision dismissing the appeal was correct and there was no question of law involved.
1 cited instrument linked from this judgment.
The Court of Appeal refused BHP's application for leave to appeal because the appellant's complaints were about the arbitrator's weighing of competing medical reports, a factual matter. Section 247(3) permits leave only where an appeal involves a question of law. The commissioner wrongly granted leave; once it was clear the dispute raised factual issues only, leave should have been refused. The commissioner's ultimate dismissal of the appeal was correct because there was cogent evidence supporting the arbitrator's finding of at least 16% disability.
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1,839 words · generated 29/07/2026
BHP Billiton (appellant) challenged an arbitrator's finding that Mr Brady (respondent) had a degree of permanent disability of not less than 16% under the Workers' Compensation and Injury Management Act 1981 (WA) (the Act) ([s 93E] and related provisions). The arbitrator reached that conclusion after considering three medical reports: Dr Kennedy, Dr Kagi and Dr Silbert. The arbitrator preferred Dr Kennedy's opinion and described the reports of Drs Kagi and Silbert as of "little assistance" (Pullin JA, para 4). BHP sought leave to appeal to the Dispute Resolution Directorate Commissioner under s 247(3) of the Act, asserting four "questions of law" including sufficiency of evidence, adequacy of reasons, denial of natural justice, and Wednesbury unreasonableness (para 6, paraphrased).
Commissioner Nisbet initially granted leave on the basis that the four matters were "questions of law" (para 6) but, after hearing the appeal on the merits, dismissed it. The commissioner accepted some of BHP's criticisms about the arbitrator's analysis of Drs Kagi and Silbert but concluded there was "cogent, clear, unequivocal evidence" (Dr Kennedy) on which the arbitrator was entitled to rely and that the arbitrator's decision could not be overturned unless there was no evidence to support it (paras 11–12, 25).
BHP then sought leave to appeal to the Court of Appeal under s 254(1). Pullin JA (with Wheeler JA agreeing and Buss JA concurring) held that the issues raised by BHP were questions of fact, essentially an attack on the weight the arbitrator attributed to expert evidence, and not questions of law required under s 247(3) and s 254(1). Pullin JA found that the commissioner erred in granting leave and should have refused it once it was apparent no question of law was involved; nonetheless, because the commissioner ultimately dismissed the appeal for correct reasons (that there was evidence to support the arbitrator), the dismissal stood, and leave to appeal to the Court of Appeal was refused (paras 13, 17–18).
Two linked statutory and doctrinal points decided the outcome.
Statutory gatekeeping: s 247(3) of the Act allows a commissioner to grant leave to appeal from an arbitrator's decision "if the appeal involves a question of law". Section 254(1) likewise conditions appeals to the Court of Appeal on there being a question of law (Pullin JA [2]–[3], [18]). The court treated the statutory requirement strictly: only matters that genuinely raise errors of law (or mixed law and fact where the legal element is material) can support leave.
Factual character of the complaint: The central complaint was that the arbitrator erred in giving little weight to Drs Kagi and Silbert and preferred Dr Kennedy, resulting in a finding of at least 16% disability. Pullin JA applied established authorities emphasising the distinction between errors of fact and errors of law. He cited Brennan J in Waterford that "There is no error of law simply in making a wrong finding of fact" and cited other authorities to the same effect (para 5). Because the arbitrator's determination involved assessing competing expert opinions and attributing weight, a paradigmatic factual exercise, Pullin JA concluded it did not raise a question of law (paras 4–5, 11–12, 18).
The commissioner had erred by treating the appellant's broad assertions as necessarily establishing questions of law and granting leave at the outset (para 15). Pullin JA stressed that an assertion that a matter involves a legal question is insufficient unless the asserted legal error is material to the decision in the sense that, but for it, the decision would have been different (citing Australian Broadcasting Tribunal v Bond) (para 15).
However, because the commissioner ultimately dismissed the appeal on the ground that there was cogent evidence supporting the arbitrator (and thus no basis to overturn), Pullin JA found the dismissal correct on its merits even though the initial grant of leave was mistaken (paras 11–13, 25, 17–18).
Buss JA added an observation about the scope of the commissioner's discretion under s 247(3): while the point was not argued, his preliminary view was that if a question of law is involved the commissioner should grant leave if it is in the interests of justice to do so (para 20). That is an obiter observation about discretionary practice rather than necessary to the decision.
Before this decision, the statutory framework was clear: leave under s 247(3) is conditional on the appeal involving a question of law. The jurisprudential distinction between errors of fact and errors of law was established in High Court authorities (e.g. Waterford) and earlier Western Australian authority (cited at para 2). What Pullin JA clarifies is the practical application of that distinction in the workers' compensation arbitration context: challenges that amount to rival evaluations of expert evidence are factual and do not satisfy the "question of law" threshold for leave. The decision reinforces that:
Therefore, after this decision, litigants in the workers' compensation tribunal context face a clear gatekeeping standard: appeals framed as disagreements about weight of evidence will not get past the commissioner unless they can point to a legal error or legal principle misapplied.
Pullin JA citing Waterford: "There is no error of law simply in making a wrong finding of fact." (para 5)
Commissioner Nisbet (as quoted): "These are indeed questions of law and I am accordingly bound to grant leave to appeal ..." (para 6)
Commissioner Nisbet (as quoted): "Even if the decision to attach no or little weight ... was for reasons which look a little surprising ..., the only way in which the arbitrator's decision can be overturned is if there was no evidence upon which he could have acted." (para 25)
Pullin JA: "The commissioner erred in granting leave on the basis that 'a question of law was involved' ..." (para 15)
Pullin JA on procedure: "In plain cases it might be appropriate to deal with the application for leave to appeal before considering the proposed grounds of appeal, but ... in most cases ... the question of leave [should be] dealt with after considering the merits ..." (para 14)
Appeals where the principal complaint is that an arbitrator preferred one expert medical opinion over another and thus reached an adverse factual conclusion. If the appellant's grounds are essentially that the arbitrator should have accepted a different medical opinion, this case indicates that will be treated as a factual matter not raising a question of law (para 4, 11–12, 18).
Situations where an appellant alleges inadequacy of reasons or that the tribunal "mistreated" reports but cannot point to legal misdirection, breach of statutory procedure, or a legal principle misapplied. If there is evidence supporting the tribunal's conclusion, the decision will likely stand (para 25).
Cases where an appellant asserts Wednesbury-type unreasonableness but the assertion amounts to disagreement about weight or reasonableness of factual evaluations rather than a legal error. Such assertions do not automatically create a question of law (paras 6, 15).
This judgment is an affirmation, within the Western Australian workers' compensation context, of the well-established High Court principle that wrong findings of fact do not themselves create questions of law suitable for appeal. The court applied that principle to deny procedural access to appellate review where the dispute was fundamentally factual. The decision also provides practical guidance to commissioners about handling leave applications: commissioners should not be mechanically bound to accept an appellant's characterisation of issues as legal, and it may be procedurally preferable to consider leave after examining the merits (para 14). Buss JA's obiter preliminary view endorses a broad residual discretion in the commissioner to grant leave in the interests of justice where a question of law is present (para 20).
Practitioners should expect courts to insist on a clear legal element if invoking s 247(3) or s 254(1); subsequent decisions in the WA jurisdiction will treat Brady as a straightforward application of the fact-law distinction when reviewing leave decisions in the workers' compensation tribunal context.
Scope of "question of law" in borderline cases: Pullin JA applied established tests but left open finer distinctions where findings of fact and law intertwine; what degree of legal component in a mixed question suffices to trigger s 247(3) was not exhaustively delineated here (see para 15).
Extent of commissioner's discretion under s 247(3): Buss JA expressed a preliminary obiter view that the commissioner should grant leave where a question of law is involved and it is in the interests of justice, but the exact contours and limits of that discretion were not litigated or decided (para 20).
Procedural practice on handling leave applications: Pullin JA suggested practical approaches (consider leave after merits in most cases), but the judgment does not prescribe a mandatory procedural rule, leaving room for commissioners to adopt different approaches consistent with fairness and efficiency (para 14).
Interaction with Wednesbury-type challenges: This case indicates that alleging "wholly unreasonable" or "arbitrary" decision-making is insufficient if the complaint is essentially about factual weight. However, further guidance could be needed on when a factual assessment crosses into reviewable unreasonableness of law, especially where the tribunal's reasons are sparse.
Practitioners should draft grounds of appeal with care to identify and articulate any discrete legal error, including misdirection on law, misapplication of the statutory test, denial of procedural fairness in ways that can be shown to be material to outcome, or absence of any evidentiary foundation. Absent such features, Brady shows that disputes framed as rival factual evaluations are unlikely to obtain leave to appeal.
JURISDICTION : SUPREME COURT OF WESTERN AUSTRALIA
CITATION : BHP BILLITON IRON ORE PTY LTD -v- BRADY [2008] WASCA 250
Jurisdiction : DISPUTE RESOLUTION DIRECTORATE, WORKCOVER WA
Workers' compensation - Appeal to commissioner from arbitrator's decision about respondent's degree of disability - Whether there was a question of law involved - Whether the commissioner should have granted leave to appeal
2 PULLIN JA: This is an application pursuant to s 254 of the Workers Compensation and Injury Management Act 1981 (WA) ('the Act') for leave to appeal against a decision of Commissioner Nisbet who dismissed an appeal from an arbitrator's decision. The arbitrator made a finding that, within the meaning of s 93E of the Act, the respondent's degree of disability as a result of a workplace injury was 'not less than 16%'. This gave the respondent a right, subject to the provisions of the Act, to a possible award of common law damages.
The appellant had to demonstrate that a 'question of law was involved'
3 The appellant wished to appeal the arbitrator's decision but s 247(1) of the Act states that a party to a dispute may appeal only with the leave of the commissioner. Section 247(3) of the Act states that the commissioner may grant leave to appeal from a decision of an arbitrator on a matter referred under s 93D(10) if the appeal 'involves a question of law'. To establish that there is a 'question of law' involved it is necessary to show that an error of law or an error of mixed law and fact has occurred. See Highmoon Pty Ltd v City of Fremantle [2006] WASCA 21 [34] and Woolworths (WA) Ltd v Liquorland (Australia) Pty Ltd (Unreported, WASCA, Library No 940553, 7 October 1994) (Anderson J).
4 The relevant facts can be stated in just a few sentences. The respondent alleged that he was injured at work. A dispute arose about the extent of the resultant disability and the arbitrator had to decide whether or not the respondent's degree of disability as a result of the injury was 'not less than 16%'. He had before him medical reports from Dr Kennedy, Dr Kagi and Dr Silbert. Different opinions were expressed by these doctors about the respondent's degree of disability. If the arbitrator accepted Dr Kennedy's report in preference to the other reports, then he would find that the respondent's degree of disability was not less than 16%. If the arbitrator preferred the opinions of Dr Kagi or Dr Silbert (either together or any one of them) in preference to Dr Kennedy's report, then he would find that the degree of disability was less than 16%. The arbitrator considered all of the reports, preferred Dr Kennedy's opinion that the degree of disability was more than 16% and expressed the opinion that Dr Kagi and Dr Silbert's reports were of 'little assistance' to him. In other words the arbitrator gave the opinions of Dr Kagi and Dr Silbert little weight.
The alleged error by the arbitrator was an alleged error of fact
5 The finding made by the arbitrator about the level of disability was a finding of fact based on an assessment of the weight to be given to the competing reports. The appellant, in effect, sought to demonstrate that the arbitrator's assessment of the weight to be given to the reports of Dr Kagi and Dr Silbert was erroneous. If such an error were made, it was not an error of law. As Brennan J said in Waterford v The Commonwealth of Australia [1987] HCA 25; (1987) 163 CLR 54, 77 'There is no error of law simply in making a wrong finding of fact'. See also R v District Court; Ex parte White [1966] HCA 69; (1966) 116 CLR 644, 654. Both of those authorities were cited with approval by Mason CJ in Australian Broadcasting Tribunal v Bond [1990] HCA 33; (1990) 170 CLR 321, 356. See also Azzopardi v Tasman UEB Industries Ltd (1985) 4 NSWLR 139, 151 where Kirby P said:
If there is evidence, or if there are available inferences which compete for the judge's acceptance, no error of law occurs simply because the judge prefers one version of the evidence to another or one set of inferences to another.
To similar effect see Glass JA, 155 - 156, Samuels JA agreeing.
6 The commissioner at the beginning of his reasons said:
The applicant submitted that there were four questions of law involved, namely:
7 Under s 247(3) of the Act, the commissioner had a discretion as to whether or not he would grant leave. The commissioner was not 'bound' to grant leave. The grant of leave was somewhat surprising, particularly in relation to the third 'question', because in [6] of his reasons the commissioner recorded that at the commencement of the hearing of the appeal the ground alleging a failure to afford the appellant natural justice was abandoned. The grant of leave was also surprising in view of the commissioner's reasons for dismissing the appeal as revealed below.
8 The appellant's grounds of appeal before the commissioner read:
(a) there was no evidence Dr Silbert failed to factor this deterioration into his assessment;
(b) there has always been a recognition that permanence is to be dealt with in the context of the (then) current condition of the worker.
In the circumstances therefore it is a little difficult to see why the arbitrator attached little or no weight to Dr Silbert's opinion. Certainly, I would not have disregarded or attached as little weight to it as the arbitrator appears to have done. The consequences of this are a different matter entirely and I will deal with them later in this judgment. [13]
I would not have discounted Dr Kagi's first opinion in the manner in which the arbitrator seems to have done. In other words I would have attached different weight to it than the arbitrator has. Again however what the consequence of this is will be seen later in this judgment. [19]
As can be seen from these reasons I agree with the applicant's complaints about the arbitrator's analysis of the reports of each of Drs Silbert and Kagi but the fact of the matter was that he had cogent, clear, unequivocal evidence before him upon which he was entitled to rely, if he so chose, to find that the respondent had a level of disability of not less than 16%. [23]
12 Then at [25] the commissioner, dealing with all the grounds, said:
[T]he choice was between Dr Kennedy's opinion on the one hand, and opinions he chose not to attach much weight to if at all. Even if the decision to attach no or little weight to the other competing opinions was for reasons which look a little surprising upon a close analysis of them, the only way in which the arbitrator's decision can be overturned is if there was no evidence upon which he could have acted. This cannot be said in this case and accordingly ... the arbitrator's decision must stand and the appeal will be dismissed. [25]
13 The commissioner's conclusion was in effect, that there was no question of law involved. That conclusion was correct. The conclusion meant that the commissioner should have refused leave to appeal rather than have granted leave. If the commissioner had considered the proposed grounds first and reached the conclusion that he did, namely that there was no question of law involved, he should have then concluded his reasons by rejecting the appellant's assertions about what questions of law were involved and refused leave to appeal.
14 In plain cases it might be appropriate to deal with the application for leave to appeal before considering the proposed grounds of appeal, but experience is likely to show that in most cases the application for leave to appeal, and the appeal should be heard together and the question of leave dealt with after considering the merits of the proposed grounds of appeal. If the proceedings are conducted in that way, the commissioner will then be in a position at the end of the hearing to either:
(a) grant leave and uphold or dismiss the appeal, or
15 The commissioner erred in granting leave on the basis that 'a question of law was involved' in relation to the four points which were asserted by the appellant. The commissioner was not bound to accept that questions of law were involved merely because the appellant asserted there were such questions. In another but analogous context, namely whether a notice should be given under s 78B of the Judiciary Act 1903 (Cth), a case does not 'involve' a matter arising under the constitution or
involving its interpretation merely because someone asserts that it does. See Glennan v Commissioner of Taxation [2003] HCA 31; (2003) 77 ALJR 1195 [14] (Gummow, Hayne & Callinan JJ). Furthermore, a decision does not 'involve' an error of law 'unless the error is material to the decision in the sense that it contributes to it so that, but for the error, the decision would have been, or might have been, different': Australian Broadcasting Tribunal v Bond, 353.
16 The appellant's assertion that there were questions of law involved should have been rejected by the commissioner once he concluded that, in effect, there was no question of law involved in the complaint that the arbitrator erred in rejecting the opinions of Drs Silbert and Kagi. If the commissioner had not dealt with the leave application first but waited until he had formulated his reasons on the proposed grounds of appeal, he would have refused leave.
17 If the respondent had cross-appealed against the grant of leave, that appeal would have succeeded and in lieu there would have been an order refusing the appellant's application for leave to appeal to the commissioner. However, there was no cross-appeal, so the grant of leave remains. That does not assist the appellant in this court because the order of the commissioner dismissing the appeal was correct. It was correct because the commissioner decided, not in these words, but in effect that, contrary to his grant of leave, there was no question of law involved in the appeal. In effect, the commissioner concluded that the appellant was only trying to raise questions of fact.
18 The appellant's grounds of appeal allege that the commissioner erred in finding the arbitrator 'mistreated' the reports of Drs Silbert and Kagi, that the commissioner misconstrued s 247 of the Act and 'should have found' that he could review the arbitrator's decision. The commissioner correctly concluded that the issues raised on appeal involved questions of fact and the arbitrator did not 'mistreat' the reports of the two doctors, but merely made a finding of fact. The commissioner was correct to find that he could not review the arbitrator's decision. As a result, the appeal to this court is not 'on a question of law' as required by s 254(1) of the Act. As a result, leave to appeal to this court should be refused.
19 BUSS JA: I agree with Pullin JA that leave to appeal should be refused. Subject to the observations set out below, I agree with his Honour's reasons.
20 Section 247(1) of the Workers' Compensation and Injury Management Act 1981 (WA) conferred on the appellant a conditional right to appeal to the commissioner against the decision of the arbitrator. The right of appeal was conditional on the commissioner granting leave. Section 247(3) applied to the appellant's application to the commissioner for leave. Compare s 247(2). By s 247(3), the commissioner may grant leave to appeal from a decision of an arbitrator on a matter referred under s 93D(10) if the appeal involves a question of law. The power to grant leave under s 247(3) is conferred in general terms. It is qualified only by the requirement that the appeal involve a question of law. It is unnecessary, in this appeal, to determine the nature or extent of the commissioner's discretion under s 247(3) to grant or refuse leave where he or she is satisfied that the appeal involves a question of law. The point was not argued before this court. My preliminary view is that if there is a question of law involved, the commissioner should grant leave under s 247(3) if, in all the circumstances of the particular case, it is in the interests of justice that there be a grant of leave.
(1987) 163 CLR 54
(1966) 116 CLR 644
(1990) 170 CLR 321
(1985) 4 NSWLR 139
(2003) 77 ALJR 1195
Leave to appeal refused; the commissioner's decision dismissing the appeal was correct and there was no question of law involved.