"...We consider that the authorities establish that in law the correct approach for the Industrial Tribunal to adopt in answering the question posed by S.57(3) of the 1978 Act is as follows.
"... it was not at all unusual for the applicant to work as long as 140 hours a week. In the preceding four or five weeks the average was 127 hours and in at least two weeks he had actually worked 140 hours."
"... prepared to employ a person who on the evidence whether he was sober or not in the light of the hours on duty was not fit to perform properly as a security guard. Such a person undertakes responsible and serious duties."
"It calls first for an examination of the employee's conduct and an evaluation of that conduct in the light of circumstances as they existed. Having decided where the employee's conduct fell within a spectrum beginning with the wholly reasonable and ending with the wholly unreasonable, the Industrial Tribunal then has to evaluate the employer's reaction to that conduct and ask itself whether, in accordance with equity and the substantial merits of the case, the employer acted reasonably or unreasonably in treating the employee's conduct as a sufficient reason for dismissing him ..."
"...What matters is whether the decision under appeal 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 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'."