25. In the present case, we are unable to see how conditions (2), (3) and (4) could be held to have been satisfied. The contract was essentially an agreement for casual employment. It contained no warranty to the effect that work would be available or that, if available, it would be offered to the respondent in preference to any other suitably qualified person. There was no evidence as to whether the appellant had entered into similar contracts with other such people, employed any on a full time or part time basis or otherwise drew on their services. There was evidence that some work had, in fact, been offered to the respondent, and that more would have been available to him but that does not provide any adequate basis for the retrospective implication of a term of the kind suggested. Had the work subsided to a trickle or even ceased, it is difficult to see how the respondent could have mounted any credible action against the appellant for breach of such a term.
26. The appellant argued that, in reality, the position of the parties was very close to that of employer and employee, and that both had the expectation that there would be a considerable amount of work available to the respondent from the appellant. In these circumstances, some restraint was reasonably necessary. Assuming that the factual assumptions underpinning this submission are correct enough, it remains the position that the respondent was only a casual quasi-employee for the appellant and that the restraint was not confined to the respondent's dealing with customers of the appellant. As between the parties, it seems unreasonable to have sought to prevent the respondent finding other work on his own account when he had no promise, as distinct from an expectation, of plenty of work from the appellant. In relation to the public interest, there appears to be no benefit to the public from such a restraint.
27. It was conceded by counsel for the appellant that if his Honour had correctly found that the contract had not required the appellant to offer a reasonable amount of work to the respondent then the restraint might be held to be unreasonable. That concession was properly made. Even Lord Reid, whose judgment in Esso Petroleum Co Ltd v Harper's Garage (Stourport) Ltd [1967] UKHL 1; [1968] AC 269 was relied upon heavily by the appellant, made it clear, at 294, that this would be the fate of contracts such as those in Young v Timmins (1831) 1 Cr & J.331 where a servant had agreed not to work for anyone else but might have been given no work. See also A Schroeder Music Publishing Co Ltd v Macaulay (formerly Instone) [1974] 1 WLR 1308.
28. In our opinion, this factor alone demonstrates that the clause purports to impose an unreasonable restraint of trade. However, there is, in our opinion, another fundamental impediment to the appellant's case. At least since Herbert Morris Ltd v Saxelby was decided in 1916, it has been clear that the onus of establishing that a restraint of trade is reasonable rests upon the proponent. Mr Allen claimed that he had inserted the disputed clause in the contract "to protect our current business" but did not give evidence of any real need for such protection. Nor did Mr Allen explain how the clause would provide such protection, other than by restricting his competitors' access to casual staff such as the respondent. As counsel for the respondent pointed out, the appellant adduced no evidence of factors such as the size of the business, the nature and extent of its connections with customers or any investment in training or otherwise equipping the respondent as a consequence of his engagement. Nor did the appellant adduce any evidence to support a finding of substantial risk to its business that would have flowed from additional opportunities for the respondent to solicit work from its existing customers or the acquisition of confidential information. Nor, for that matter, did it adduce evidence of any relevant trade usage. His Honour found that the only evidence as to the purpose of the clause was that it was to protect the appellant's business against competition. That finding was not directly challenged by any of the grounds of appeal and was clearly open to his Honour.
29. As Lord Atkinson said in Herbert Morris v Saxelby at 700, "no person has an abstract right to be protected against competition per se in his trade or business". See also Nordenfelt v Maxim Nordenfelt Guns and Ammunition Co at 565 and Peters v Petersville at 145.
30. In short, his Honour was not satisfied that the appellant had discharged the onus of establishing that the clause was reasonable. We are unable to see anything in the evidence that would have required a contrary finding.
31. His Honour did not find it necessary to consider whether it might in any event have been inimical to the public interest for the respondent to have been restrained from providing technical support services to aircraft owners or operators in and around Canberra save on behalf of National Jet Systems or the appellant. When this proposition was put to Mr Meagher, he protested that there had been no evidence of any shortage of technicians and that any such owner or operator could simply engage his client. Neither of these objections seems compelling and, even if some appealable error had been identified, I would have been inclined to remit the matter to his Honour for further consideration of this point.
32. Mr Meagher was very critical of the respondent. He submitted that the respondent had been offered work by the appellant but had nonetheless ignored the obligation that he had voluntarily assumed by entering into the agreement. Mr Neil SC, who appeared for the respondent, rejoined that the pleaded defences had not yet been addressed and that the respondent would maintain that he had not known that the agreement contained the disputed clause when he signed it. He submitted that the appellant's claim to the high moral ground was at least premature. In any event, the relevant issue is whether the clause imposed an unreasonable restraint of trade; not whether the respondent had been morally justified in failing to comply with it.
33. We would dismiss the appeal.