“56. … For whatever reason, her full disability claims were not pursued during the first employment tribunal hearing. We bear in mind that the tribunal, at the hearing in December 2011, considered discrimination arising from disability, failure to make reasonable adjustments as well as harassment relating to disability. The lack of funds did not play a part in not pursuing, at the time, those acts relied on up to30 March 2011 . Had they been pursued doubtless Ms Couram would have been in a position to give evidence in relation to them on behalf of the respondent. Before us she was unable to give evidence … No genuine mistake was involved in failing to put those matters before the tribunal in 2011. The claimant had trade union and legal representation. A considerable amount of time could have been saved in the hearing of this case before us if the first tribunal considered all matters up to30 March 2011 .”
“15. Discrimination arising from disability (1) A person (A) discriminates against a disabled person (B) if- (a) A treats B unfavourably because of something arising in consequence of B’s disability, and (b) A cannot show that the treatment is a proportionate means of achieving a legitimate aim. …”
“20. Duty to make adjustments (1) Where this Act imposes a duty to make reasonable adjustments on a person, this section, sections 21 and 22 and the applicable Schedule apply; and for those purposes, a person on whom the duty is imposed is referred to as A. (2) The duty comprises the following three requirements. (3) The first requirement is a requirement, where a provision, criterion or practice of A’s puts a disabled person at a substantial disadvantage in relation to a relevant matter in comparison with persons who are not disabled, to take such steps as it is reasonable to have to take to avoid the disadvantage. … 21. Failure to comply with duty (1) A failure to comply with the first, second or third requirement is a failure to comply with a duty to make reasonable adjustments. (2) A discriminates against a disabled person if A fails to comply with that duty in relation to that person. …”
“26. Harassment (1) A person (A) harasses another (B) if - (a) A engages in unwanted conduct related to a relevant protected characteristic, and (b) the conduct has the purpose or effect of - (i) violating B’s dignity, or (ii) creating an intimidating, hostile, degrading, humiliating or offensive environment for B. … (4) In deciding whether conduct has the effect referred to in subsection (1)(b), each of the following must be taken into account - (a) the perception of B; (b) the other circumstances of the case; (c) whether it is reasonable for the conduct to have that effect. (5) The relevant protected characteristics are - …; disability; …”
“123. Time limits (1) Proceedings … may not be brought after the end of - (a) the period of 3 months starting with the date of the act to which the complaint relates, or (b) such other period as the employment tribunal thinks just and equitable. … (3) For the purposes of this section - (a) conduct extending over a period is to be treated as done at the end of the period; (b) failure to do something is to be treated as occurring when the person in question decided on it. (4) In the absence of evidence to the contrary, a person (P) is to be taken to decide on failure to do something - (a) when P does an act inconsistent with doing it, or (b) if P does no inconsistent act, on the expiry of the period in which P might reasonably have been expected to do it.”
“… where a given matter becomes the subject of litigation in, and of adjudication by, a Court of competent jurisdiction, the Court requires the parties to that litigation to bring forward their whole case, and will not (except under special circumstances) permit the same parties to open the same subject of litigation in respect of a matter which might have been brought forward as part of the subject in contest, but which was not brought forward, only because they have, from negligence, inadvertence, or even accident, omitted part of their case. The plea of res judicata applies, except in special cases, not only to points upon which the Court was actually required by the parties to form an opinion and pronounce a judgment, but to every point which properly belonged to the subject of litigation, and which the parties, exercising reasonable diligence, might have brought forward at the time. …”
“… Henderson v Henderson abuse of process, as now understood, although separate and distinct from cause of action estoppel and issue estoppel, has much in common with them. The underlying public interest is the same: that there should be finality in litigation and that a party should not be twice vexed in the same matter. This public interest is reinforced by the current emphasis on efficiency and economy in the conduct of litigation, in the interests of the parties and the public as a whole. The bringing of a claim or the raising of the defence in later proceedings may, without more, amount to abuse if the court is satisfied (the onus being on the party alleging abuse) that the claim or defence should have been raised in earlier proceedings if it was to be raised at all. I would not accept that it is necessary, before abuse may be found, to identify any additional element, such as a collateral attack on a previous decision or some dishonesty, but where those elements are present the later proceedings will be much more obviously abusive, and there will rarely be a finding of abuse unless the later proceedings involves what the court regards as unjust harassment of a party. It is, however, wrong to hold that because a matter could have been raised in earlier proceedings it should have been, so as to render the raising of it in later proceedings necessarily abusive. That is to adopt too dogmatic an approach to what should in my opinion be a broad, merits-based judgment which takes account of the public and private interests involved and also takes account of all the facts of the case, focusing attention on the crucial question whether, in all the circumstances, a party is misusing or abusing the process of the court by seeking to raise before it the issue which could have been raised before. As one cannot comprehensively list all possible forms of abuse, so one cannot formulate any hard and fast rule to determine whether, on given facts, abuse is to be found or not. Thus while I would accept that lack of funds would not ordinarily excuse a failure to raise in earlier proceedings an issue which could and should have been raised then, I would not regard it as necessarily irrelevant, particularly if it appears that the lack of funds has been caused by the party against whom it is sought to claim. While the result may often be the same, it is in my view preferable to ask whether in all the circumstances a party’s conduct is an abuse than to ask whether the conduct is an abuse and then, if it is, to ask whether the abuse is excused or justified by special circumstances. …”
“25. … Res judicata and abuse of process are juridically very different. Res judicata is a rule of substantive law, while abuse of process is a concept which informs the exercise of the court’s procedural powers. … they are distinct although overlapping legal principles with the common underlying purpose of limiting abusive and duplicative litigation. …”
“32. … the question of whether there has been an abuse is not a matter of discretionary decision. It has to be based properly on evidence and approached not only by recognising but by applying the right law [and] … [r]eading the Tribunal Judgment as a whole … to place it in context. …”
“22. … the question whether a second claim is abusive calls for an exercise of judgment. It is not an exercise of discretion. Rather, it is a question to which, ultimately there is only a correct answer … Nevertheless, an appellate court will generally only interfere with the decision of the judge where the judge has taken into account immaterial factors, failed to take into account material factors, erred in principle or come to a conclusion that was not open to him…”