"11 Nevertheless, as we have already said, the unilateral demotion in pay and status was a breach of contract. However, that is not an end of the matter. For his resignation to amount to a dismissal, the applicant must have tendered it in response to the breach and the breach must have caused the resignation. We were not satisfied that this had been the case. We took the view that the applicant resigned his employment because he had found another job. We accepted that he would not have been looking for the other job if the breach had not occurred. However, it seemed to us that this did not necessarily establish causation. The applicant could have tendered his resignation in November 1995 when Mr Chapman first told him that his job was to be downgraded. He could have done so in December 1995 when Mr Chapman told him of the appointment of Mrs Wiles. He could have done so on8 January 1996 , when Mrs Wiles took up her post. He did not do that. He chose to remain in his employment, drawing his salary and looking for other jobs, in the hope that he would be able to obtain another job before the respondent ran out of offers of permanent or temporary work. In the event, in our view, that is what happened. having obtained such a job, which (bearing in mind the sort of comments that Mr Chapman had been making to him about secondment within the respondent) he thought might become permanent, he hoped that the respondent would dismiss him and resigned when it did not. However, it seemed to us that, if the applicant had not obtained that alternative employment, he would not have resigned when he did but would have remained in employment by the respondent for so long as he chose and the respondent allowed. On that basis, we were driven to the conclusion that the cause of the applicant's resignation had not been the breach of contract but had been the offer of another job commencing30 January 1996 ."
"We think for our part that it is at least requisite that the employee should leave because of the breach of the employer's relevant duty to him, and that this should demonstrably be the case. It is not sufficient, we think, if he merely leaves - at any rate in any circumstances at all similar to the present. And secondly, we think it is not sufficient if he leaves in circumstances which indicate some ground for his leaving other than the breach of the employer's obligations to him."