Employment – Equal pay for equal work. The present proceedings concerned the claim by female employees of a local authority for equal pay in respect of a certain period of their employment. The employment tribunal decided at a pre-hearing review that the authority had failed to establish that the difference in pay over that period had been due to a material factor which had not been the difference of sex. Consequently, the tribunal held that the employees were not precluded from pursuing those claims in respect of that period. Although the Employment Appeal Tribunal decided that the tribunal had erred in its reasons for arriving at that decision, it upheld the tribunal's decision for different reasons.