"What matters is whether the decision under appeal, that is the decision of the Industrial Tribunal was a permissible option. To answer that question in the negative in the context of employment law the EAT will almost always have to be able to identify a finding of fact which was unsupported by any evidence or a clear self-misdirection in law by the Industrial Tribunal. If it cannot do this it should re-examine with the greatest care its preliminary conclusion that the decision under appeal was not a permissible option and has to be characterised as perverse"
"It is at this point that I think we are being invited to fall into another trap for unwary appellate courts namely to construe an Industrial Tribunal's reasons as if they were a statute or deed"
"In determining for the purposes of this Part whether the dismissal of an employee was fair or unfair, it shall be for the employer to show - (a) what was the reason (or, if there was more than one, the principal reason) for the dismissal, and (b) that it was a reason falling within subsection (2) or some other substantial reason of a kind such as to justify the dismissal of an employee holding the position which that employee held"
"Where the employer has fulfilled the requirements of subsection (1), then [subject to certain matters which do not arise here] the determination of the question whether the dismissal was fair or unfair having regard to the reason shown by the employer, shall depend on whether in the circumstances (including the size and administrative resources of the employer's undertaking) the employer acted reasonably or unreasonably in treating it as a sufficient reason for dismissing the employee; and that question shall be determined in accordance with equity and the substantial merits of the case."