"within the context of assessing the [respondent's] entitlement to compensation pursuant tosection 123 of the Employment Rights Act 1996 , to what extent may it is said that the [respondent's] continued incapacity to work is attributable to the acts or omissions of the [appellants]?" 4. The Employment Tribunal's reasoning was (with our underlining added) that: "
"(a) the Employment Tribunal wrongly applied a "but for" test rather than following the guidance in Sutherland, which was to assess the percentage chance that extrinsic factors may have resulted in the respondent's inability to work ("the Sutherland Issue"); and that (b) the finding of the Employment Tribunal that there was no material evidence to suggest extrinsic factors may have resulted in an inability on the part of the respondent to work was perverse in the light of the evidence that was before the Employment Tribunal in the form of the respondent's medical records (" the perversity issue")."
"in the circumstances the tribunal held that that (1) the [respondent] would remain incapable of work for the relevant period or (2) even if she recovered so as to be fit for work the [respondent] would not have been able to find work during that period . Therefore it was just that the [respondent] receive compensation for loss of earnings on the basis claimed i.e. the period up to22 August 2006 [which was apparently the last date for which a claim was made]" 8. I will consider this point separately as "the future loss issue"
"19.It was agreed between the parties that the Tribunal was required to approach the question of causation and loss upon common law principles, most recently enunciated by Hale LJ in Sutherland v Hatton and Ors[2002] IRLR 262 . In the course of that Judgment, with which the other members of the Court of Appeal expressed approval, it was stated that: "
"Hence, if it is established that the constellation of symptoms suffered by the claimant stems from a number of different extrinsic causes, then in our view a sensible attempt should be made to apportion liability accordingly. There is no reason to distinguish these conditions from the chronological development of industrial diseases… Where the tortfeasors breach of duty has exacerbated a pre-existing disorder or accelerated the effect of pre-existing vulnerability, the award of damages for pain suffering and loss of amenity will reflect only the exacerbation or acceleration. Further, the quantification of financial losses must take account of contingencies. In this context, one of those contingencies may well be the change that the claimant would have succumbed to a stress related disorder in any event…." [para 42]"
"167. The Judge also took the view on the balance of probability that Mr Barber would have continued in his chosen profession until retirement age but for his illness, provided that he had received assistance to alleviate the work overload and the pressures to which he had been subjected during 1996… 171. This type of case, however, which focuses on what would probably have happened in the past, is entirely different from a case where a court has to make an estimate of what may happen in the future. If there is a chance that an event may occur which would mean that an injured claimant would not have gone on working until retirement age in any event, then a familiar way of taking that chance into account is to reduce the multiplier used for calculating future loss. The first instance decision of Otton J in Page v Smith [1993] PIQR Q55,75-76 provides a good example of the technique at work… 173. In our judgment the Judge was wrong not to reduce the multiplier for future loss to cover the chance that if Mr Barber had continued with a similar teaching job, his health might nevertheless have broken down in the same way…"
"1. What has to be proved to establish a causal link between the negligence of the defendants and the loss sustained by the plaintiffs depends in the first instance on whether the negligence consists of some positive act or misfeasance or an omission or non-feasance. In the former case, the question of causation is one of historical fact. The court has to determine on the balance of probability whether the defendant's act, for example the careless driving, caused the plaintiff's loss consisting of his broken leg Once established on balance of probability, that fact is taken as true and the plaintiff recovers his damage in full. There is no discount because the Judge considers that the balance is only tipped in favour of the plaintiff; and the plaintiff gets nothing if he fails to establish that it is more likely than not that the accident resulted in the injury. Questions of quantification of the plaintiff's loss, however, may depend upon future uncertain events. For example, whether and to what extent he will suffer osteoarthritis, whether he will continue to earn at the same rate until retirement, whether, but for the accident, he might have been promoted. It is trite law that these questions are not decided on a balance of probability, but rather on the court's assessment, often expressed in percentage terms, of the risk eventuating or the prospect of promotion, which it should be noted depends in part at least on the hypothetical acts of a third party, namely the plaintiffs employer". 13. At the hearing of the appeal, we referred counsel to two recent House of Lords decisions on damages ( Gregg v Scott[2005] 2 AC 176 and Barker v Corus[2006] UKHL 20 ). We then invited further written submissions and Mr. Grogan,who unlike Mr. Robinson responded, then drew our attention to various parts of the speeches but they do not cast any doubt on the principles to which we have just referred. Lord Nicholls of Birkenhead in Gregg's case quoted at page 182 with approval the statement of Lord Diplock in Mallett v McMonagle[1970] AC 166 , 176 that: " ..In determining what did happen in the past a court decides on the balance of probabilities. Anything that is treated as more probable than not it treats as certain. But in assessing damages which depend upon its view as to what will happen in the future or would have happened in the future if something had not happened in the past, the court will make an estimate as to what are the chances that a particular thing will or would have happened and reflect those chances, whether they are more or less than even ,in the amount of damages it awards"
"a. the respondent started her work with the appellants in November 2001. By that time, she had been diagnosed as suffering from a depressive disorder and she was at material times " a person susceptible to depression and anxiety related conditions "; b. although the respondent had previously had a depressive disorder but she did not consult her general practitioner about these problems until March 2003. The Employment Tribunal considered that until then during her employment with the appellants, " those matters were under control or, at least adequately addressed by medication "; c. in about February 2003 the respondent was off-work with significant symptoms; d. after her return to work, there was no suggestion of any further absence from work for illness until about December 2004, which culminated in the respondent tendering her resignation in February 2005 and, as we have explained, it was held that the respondent had been constructively dismissed; e. in the period from Spring 2003 until December 2004, the medication and coping mechanisms of the respondent were successful so that the Employment Tribunal concluded that "they did not militate against the [respondent's] capacity to work in 2004"; f. while the respondent was on sick leave from December 2004 until her resignation and again after the resignation, she was receiving medical treatment; g. the medical report of Derek Taylor of19 January 2005 , which would have been when the respondent was experiencing the difficulties with the appellants which led to her resignation and constructive dismissal, shows that the respondent was experiencing " depressive/anxiety type symptoms ", which is " further aggravated by poor anger control"
" appear to have developed in response to severe ongoing situational concerns related to the stressful work environment which have resulted in [the respondent] being off work sick…" h. in a further report of4 May 2005 , Derek Taylor stated that: "
"in the circumstances the tribunal held that that (1) the [respondent] would remain incapable of work for the relevant period or (2) even if she recovered so as to be fit for work the [respondent] would not have been able to find work during that period . Therefore it was just that the [respondent] receive compensation for loss of earnings on the basis claimed i.e. the period up to22 August 2006 [which was apparently the last date for which a claim was made]"