Judgment_paragraph 16 · Joan Gillespie and others v Northern Health and Social Services Boards, Department of Health and Social Services, Eastern Health and Social Services Board and Southern Health and Social Services Board (C-342/93)

16It is well settled that discrimination involves the application of different rules to comparable situations or the application of the same rule to different situations (see, in particular, Case C-279/93 Finanzamt Köln-Altstadt v Schumacker [1995] ECR I-225, paragraph 30).