"The principles to be found in the relevant authorities can, I believe, be summarised as follows. (1) In order to prove that he has suffered constructive dismissal, an employee who leaves his employment must prove that he did so as the result of a breach of contract by his employer, which shows that the employer no longer intends to be bound by an essential term of the contract: see Western Excavating (E.C.C.) Ltd v Sharp[1978] ICR 221 . (2) However, there are normally implied in a contract of employment mutual rights and obligations of trust and confidence. A breach of this implied term may justify the employee in leaving and claiming he has been constructively dismissed: see Post Office v Roberts [1980] I.R.L.R. 347 and Woods vWM Car Services (Peterborough) Ltd [1981] I.C.R. 666, 670 , per Browne-Wilkinson J. (3) The breach of this implied obligation of trust and confidence may consist of a series of actions on the part of the employer which cumulatively amount to a breach of the term, though each individual incident may not do so. In particular in such a case the last action of the employer which leads to the employee leaving need not itself be a breach of contract; the question is, does the cumulative series of acts taken together amount to a breach of the implied term? (see Woods vWM Car Services (Peterborough) Ltd [1981] I.C.R. 666 .) This is the "last straw" situation. (4) The decision whether there has been a breach of contract by the employer so as to constitute constructive dismissal of the employee is one of mixed law and fact for the industrial tribunal. An appellate court, whether the Employment Appeal Tribunal or the Court of Appeal, may only overrule that decision if the industrial tribunal have misdirected themselves as to the relevant law or have made a finding of fact for which there is no supporting evidence or which no reasonable tribunal could make: see Pedersen v Camden London Borough Council (Note) [1981] I.C.R. 674 and Woods vWM Car Services (Peterborough) Ltd [1982] I.C.R. 693 both in the Court of Appeal, applying the test laid down in Edwards v Bairstow[1956] AC 14 ."
"68 Claim under theDisability Discrimination Act 1995 We repeat all of the conclusions that we have come to above. 69 It has been accepted throughout that the Applicant was disabled for the purposes of the DDA. Following the guidance given in the Clark v Novacold we are of the conclusion that the Applicant would not have been treated in the way that she was if she had not been disabled. Although we were not dealing with the issue of actual medical retirement that revolved totally around the Applicant's multiple sclerosis. The issues that we have been left to determine following the Appeal again would not have arisen if the Applicant had not been disabled. Further she would not have had to remain away from work awaiting the determination of her appeal and subsequent outcome. 70 We are looking at the issue of less favourable treatment from the granting of her appeal against medical retirement on 14 July but in conjunction with the excessive delay in the resolution of the appeal itself ie some five and a half months. We find that there was an unnecessary emphasis on the use of the stairs by the Applicant which was not supported by medical evidence and that this, in itself, amounted to less favourable treatment There was no evidence produced medically in relation to the Applicant that she could only work on the ground floor although Mr Bryant seemed to take the view that that was the case. 71 If, as the Respondents allege, all personnel can be moved to posts within their grade then Lisa Edson could have been so moved to allow the Applicant to get her job back. Again, the Applicant was treated less favourably in this respect. 72 Having found less favourable treatment we must look at the issue of justification. The first matter is that the Applicant could not use the stairs but we do not find that substantial and material. Mr Bryant in evidence accepted that he had decided he wanted the Applicant to go into the Personnel department to keep her out of the Fraud Squad because he was concerned about being called before an Employment Tribunal if he placed her back there. These concerns were never however discussed with the Applicant. 73 Although the Applicant never had a contractual right to her old job back this was not even considered. Before the workplace assessment even took place the Respondents had decided that they would be giving this job to someone else. 74 The Post Office -v- Jones reminds us that it is not for the Tribunal to determine what decision they would have taken but very much like the situation in cases of unfair dismissal to look at whether or not the employer's response was within the band of reasonable responses. We must consider whether the Respondent's carried out sufficient investigation to support its decision and whether it took into account all the evidence available to it. We do not find that the Respondent did and that their response was within the band of reasonable responses. There was no uncertainty with regard to the outcome of the appeal following Dr Copeman's original letter. It is quite clear that Mr Bryant was trying to protect the Respondent's position and not the Applicant in relation to her wish to return to the Fraud Squad. As stated above, the Respondent's attitude to the Applicant's ability to use stairs was not in accordance with the medical evidence and indeed contrary to it. 75 For all of those reasons we find that the Applicant's claim under the DDA is substantiated."