"(2) In sub-paragraph (l)(b) above the reference to a reason falling within this sub-paragraph is a reference to a reason which - (a) related to the capability ... of the employee for performing work of the kind which he was employed by the employer to do."
"(a) Are they satisfied from the evidence that the work of the applicants showed lack of capability for the performance of work for which they were employed to do? (b) Has the employer satisfied the tribunal that in the circumstances (having regard to equity and the substantial merits of the case) he acted reasonably in treating it is sufficient reason for dismissing the applicants."