"In June 1979, as part of industrial action taken in the course of a dispute with the employers, the applicant and some other employees refused to work through their meal breaks in breach of their contracts of employment and were dismissed for taking part in a strike. Although a number of the dismissed employees were offered and accepted re-engagement, no such offer was made to the applicant. In October 1979 the applicant obtained new employment, but after 18 months he was made redundant. In September 1980 an industrial tribunal upheld his complaint of unfair dismissal on the ground that there had been selective re-engagement within the meaning ofsection 62(2)(b) of the Employment Protection (Consolidation) Act 1978 . In January 1983 following a number of hearings and appeals, the industrial tribunal assessed compensation. They awarded him loss of wages from his dismissal in June 1979 up to the compensation hearing in January 1983, plus a further 26 weeks' future loss of wages, less the agreed earnings from his 18 months' employment. [In other words they were applying the broad brush approach].
"In the ordinary case where there has been no inordinate delay in assessing compensation such as has occurred in this case, such questions cannot arise. In practice, industrial tribunals assess the loss down to the date of assessment by treating the employer as liable for loss of wages down to that date but setting against that amount any earnings which the employee has received from alternative employment. If at the date of assessment the employee is in apparently permanent employment on comparable terms, the industrial tribunal does not award any compensation for future loss of earnings. If the employee is not then in such employment, the industrial tribunal forms a view as to how long it will be before the employee gets such employment and compensates in respect of that period. In practice it is assumed as to the future that the original employer's liability ceases once equivalent permanent employment is obtained.
"do we think that this was in any way his fault, or something for which he should accept responsibility, that his salary was reduced? That is not shown to us and therefore we say that the best he was able to do was to earn the earnings which he did in this new employment for the period which he did"