"(1) A person discriminates against a woman in any circumstances relevant for the purposes of any provision of this Act if – … (a) he applies to her a requirement or condition which he applies or would apply equally to a man but – (i) which is such that the proportion of women who can comply with it is considerably smaller than the proportion of men who can comply with it, and (ii) which he cannot show to be justifiable irrespective of the sex of the person to whom it is applied, and (iii) which is to her detriment because she cannot comply with it."
"As I understand it, the process for establishing discrimination on this basis takes the following shape. (For ease of illustration, I will assume that the complaint stems from the failure of a woman to satisfy a relevant positive qualification for selection, and that only one such qualification is in issue.) (1) Identify the criterion for selection; (2) Identify the relevant population, comprising all those who satisfy all the other criteria for selection. (I do not know to what extent this step in the process is articulated in the cases. To my mind it is vital to the intellectual soundness of the demographic argument); (3) Divide the relevant population into groups representing those who satisfy the criterion and those who do not; (4) Predict statistically what proportion of each group should consist of women; (5) Ascertain what are the actual male/female balances in the two groups; (6) Compare the actual with the predicted balances; (7) If women are found to be under-represented in the first group and over-represented in the second, it is proved that the criterion is discriminatory."
"In my judgement justifiable requires an objective balance between the discriminatory effect of the condition and the reasonable needs of the party who applies the condition."
"We accepted that we should not look further than those 85 Valuation Executives who were considered for re-grading in October 1995, whose particulars are set out in the document R1. Miss Downing, for the Respondent, argued that the three criteria were indivisible, so that the pool was all 85. Taken together, the criteria constituted the condition or requirement which the Respondent applied equally to all the Valuation Executives regardless of sex. The majority lay-members accepted that submission because, treating each of the criteria as discrete, would lead to a number of permutations. Furthermore, focusing on the third criteria, that of the Box 2 marking, could result in unfairness to male Valuation Executives who, for example, met the first two criterion on1 October 1995 but only had Box 3 markings and who might subsequently in 1996 have made the grade to Box 2 or better. Further, the lay members find that the conditions of the re-grading exercise taken either together or separately did not apply unfairly to women. Both sexes could comply and the majority lay members did not accept that the applicant's box 4 was made artificially low to deny her the chance of re-grading."
"If follows that the statutory concept, in my judgment, is that of a "pool" or "relevant population", meaning those persons, male and female, who satisfy all the relevant criteria, apart from the requirement in question."