Shamoon (Appellant v. Chief Constable of the Royal Ulster Constabulary (Respondent)(Northern Ireland)

Direct sex discrimination poses a single question: did the alleged discriminator, on the ground of sex, treat the claimant less favourably than that person treated or would have treated a man? The statutory comparator may be actual or hypothetical, but the relevant circumstances must be the same or not materially different. An imperfect actual comparator may still have evidential value, depending on the differences.

In employment, detriment exists where a reasonable worker would or might regard the treatment as disadvantageous in all the circumstances. Financial or physical consequences are unnecessary. Discrimination may be inferred from surrounding facts and an inadequate explanation, but the inference must rest on evidence. A tribunal must explain the factual basis for its conclusion.

Shamoon v Chief Constable of the Royal Ulster Constabulary concerned a female chief inspector whose responsibility for counselling constables during staff appraisals was removed after complaints about her appraisals and representations by the Police Federation. Male chief inspectors in other traffic divisions continued to perform that work.

A majority of the industrial tribunal upheld her initial complaint of sex discrimination under the Sex Discrimination (Northern Ireland) Order 1976, although it dismissed three later complaints. The Court of Appeal in Northern Ireland, [2001] NICA 23, allowed the Chief Constable's appeal by case stated and dismissed the complaint.

The issues before the House were whether the removal of duties constituted a detriment, whether the male chief inspectors were valid comparators, whether a hypothetical comparator could be used, and whether the tribunal had adequately explained an inference that the treatment was on the ground of sex.

Appeal dismissed unanimously. The House upheld the reversal of the industrial tribunal's decision, although it rejected important parts of the Court of Appeal's reasoning.

1. Per Lord Hope, with Lord Hutton, Lord Scott and Lord Rodger agreeing on this issue, the removal of appraisal duties was capable of constituting a detriment under article 8(2)(b) of the Sex Discrimination (Northern Ireland) Order 1976. Detriment has a broad and ordinary meaning within the employment context. A reasonable worker in the claimant's position might regard the removal of normal responsibilities as demeaning and as diminishing her standing. No financial or physical consequence was required. The contrary approach in Lord Chancellor v Coker and Osamor was not followed.

2. Lord Nicholls explained that direct discrimination presents a single statutory question, although tribunals often separate less favourable treatment from the reason for it. Where the issues are intertwined, a tribunal may sensibly determine why the claimant was treated as she was before finally resolving the comparator issue. Lord Hope and Lord Rodger adopted the same flexible approach.

3. The House agreed that the two male chief inspectors were not valid statutory comparators. They were managed by other superintendents, and no comparable complaints or Police Federation representations had been made about them. Article 7 required those material circumstances to be incorporated into the comparison.

4. The lack of a valid actual comparator was not fatal. The words “would treat” permitted comparison with a hypothetical male chief inspector against whom similar complaints and representations had been made. Actual cases with material differences could still have evidential value, but their weight depended on the significance of those differences. Here the differences deprived the proposed comparators of sufficient evidential value.

5. Discrimination may be proved by inference because direct evidence is unusual. A difference in treatment coupled with a difference in sex may call for an explanation from the employer. Nevertheless, the claimant must establish facts capable of supporting the inference, and the tribunal must explain why it rejects the employer's explanation.

6. The tribunal had not explained why it considered that the superintendent would have treated a comparable male officer more favourably. Its findings did not supply the missing evidential basis. Per Lord Hutton, the absence of adequate reasons and supporting evidence meant that remittal was inappropriate. Lord Hope adopted that reasoning; Lord Nicholls ultimately agreed that the appeal should be dismissed.

• House of Lords: Dismissed the appeal unanimously. It upheld the reversal of the tribunal's decision, while rejecting the Court of Appeal's restrictive construction of detriment and its suggestion that an actual comparator was essential.
• Court of Appeal in Northern Ireland: In [2001] NICA 23, allowed the Chief Constable's appeal by case stated, reversed the tribunal and dismissed the complaint. It held that no detriment had been established, that the proposed comparators were invalid and that the finding of discrimination lacked an evidential basis.
• Industrial tribunal: By a majority, upheld the appellant's initial sex-discrimination complaint concerning removal of appraisal duties. It dismissed three later complaints of discrimination and victimisation.