"(1) Subject to the provisions of this section and sections 124, 124A and 126, the amount of the compensatory award shall be such amount as the tribunal considers just and equitable in all the circumstances having regard to the loss sustained by the complainant in consequence of the dismissal in so far as that loss is attributable to action taken by the employer. (2) The loss referred to in subsection (1) shall be taken to include (a) any expenses reasonably incurred by the complainant in consequence of the dismissal, and (b) subject to subsection (3), loss of any benefit which he might reasonably be expected to have had but for the dismissal. (3) …. (4) In ascertaining the loss referred to in subsection (1) the tribunal shall apply the same rule concerning the duty of a person to mitigate his loss as applies to damages recoverable under the common law of England and Wales or (as the case may be) Scotland"
"19. We leave aside entirely the question of whether there could be said to be a duty to mitigate, in the sense of a duty to claim benefits. That might arise for argument in some future case, dependent perhaps on the precise facts. But in this passage Judge Hicks himself confirms that "such benefits can be described in a general sense as 'mitigating' the damage", i.e. the damage has been mitigated, reduced or extinguished as a result of the receipt of the benefits. It is not therefore "the reverse situation" to one where there is an issue as to the duty to mitigate, but one where, irrespective of whether there is a duty, the mitigation has occurred . If credit is then not given, then the tribunal would be compensating the applicant in a greater amount than the loss he or she has suffered. …. 22. We turn to our conclusions, which are as apt to deal with issues as to giving credit for receipt by the applicant of earnings from a new employer as for receipt of benefits which would not have been paid had the applicant remained employed and are not recoupable. 23. The only basis whereby it is said to be "just and equitable" to calculate the loss by disregarding the benefits (or part of them) or by not giving credit for them (or all of them) is by reference to practice in personal injury cases. Mr Jones for the Applicant had two cases, a primary case and what he called a fallback case, which latter in the event he abandoned in the course of argument. That fallback case, as originally formulated, was, by reference to Faraji so as to suggest that the whole of the incapacity benefit should be disregarded: this would be on the basis that the benefits should be seen as equivalent to an insurance payment. It is plain, however, that the entitlement to claim and receive benefits is not equivalent to purchasing and receiving an insurance claim from a commercial insurance company. In personal injury cases, this could amount to the purchase of a policy to cover personal accident insurance. There can be similar provisions which might provide for the circumstance of unemployment: this most usually arises in respect of insurance to cover mortgage or hire-purchase payments. Such purchase of insurance is regarded (Latin still being permissible in these courts) as res inter alios acta or, as Judge Hicks himself described it in Rubenstein in paragraph 15 of his Addendum a "policy with commercial insurers, negotiated independently of the employment relationship"
'In the present case counsel for the appellants sought to distinguish the decision of this house in Parry -v- Cleaver on the ground that the appellants are in the triple position of employers, tortfeasors and insurers. In my opinion this makes no difference to the principle that the plaintiff has bought his pension, which is, in the words of Lord Reid, 'the fruit, through insurance, of all the money which was set aside in the past in respect of his past work'