“If it is held that taking the appropriate steps which the employer failed to take before dismissing the employee would not have affected the outcome, this will often lead to the result that the employee, though unfairly dismissed, will recover no compensation or, in the case of redundancy, no compensation in excess of his redundancy payment. Thus in Earl v Slater & Wheeler (Airlyne) Ltd[1972] ICR 508 the employee was held to have been unfairly dismissed, but nevertheless lost his appeal to the National Industrial Relations Court because his misconduct disentitled him to any award of compensation, which was at that time the only effective remedy. But in spite of this the application of the so-called British Labour Pump principle [ British Labour Pump Co Ltd v Byrne ][1979] ICR 347 tends to distort the operation of the employment protection legislation in two important ways. First, as was pointed out by Browne-Wilkinson J in Sillifant ’s case [ Sillifant v Powell Duffryn Timber Ltd [ 1983] IRLR 91 ], if the industrial tribunal, in considering whether the employer who has omitted to take the appropriate procedural steps acted reasonably or unreasonably in treating his reason as a sufficient reason for dismissal, poses for itself the hypothetical question whether the result would have been any different if the appropriate procedural steps had been taken, it can only answer that question on a balance of probabilities. Accordingly, applying the British Labour Pump principle, if the answer is that it probably would have made no difference, the employee’s unfair dismissal claim fails. But if the likely effect of taking the appropriate procedural steps is only considered, as it should be, at the stage of assessing compensation, the position is quite different. In that situation, as Browne-Wilkinson J puts it in Sillifant ’s case, at p. 96: “There is no need for an ‘all or nothing’ decision. If the industrial tribunal thinks there is a doubt whether or not the employee would have been dismissed, this element can be reflected by reducing the normal amount of compensation by a percentage representing the chance that the employee would still have lost his employment.” ”
“… Proper latitude must be given for the infelicity of expression to which all judgments may be subject, but perhaps particularly Tribunal decisions: an over pernickety approach should not be taken to any isolated shortcoming. We would have been inclined to overlook the statement of approach as an unintentional error if the rest of the paragraph had demonstrated that, taken overall, that is what it was. There are indications of this: the Tribunal considered how the gravity of the offence ‘may have been’ reduced; and how with legal representation the Claimant ‘would not inevitably’ have been dismissed. The use of these expressions, and the phrase ‘at least a prospect’ is to use the language of chance, albeit that the words ‘chance’ or ‘risk’ or ‘percentage’ do not appear. However, the conclusion - after language which suggests that there was some mild possibility that the Claimant would not have been dismissed - was summed up in a view which repeated the balance of probability …”
“… It seems to us that the matter will be one of impression and judgment, so that a tribunal will have to decide whether the unfair departure from what should have happened was of a kind which makes it possible to say, with more or less confidence, that the failure made no difference, or whether the failure was such that one simply cannot sensibly reconstruct the world as it might have been. …”
“… indicates very strongly that an appellate court should tread very warily when it is being asked to substitute its own impression and judgment for that of the tribunal. …”