Judgment

Case C-385/11

Decision:

"On those grounds, the Court (Eighth Chamber) hereby rules:

Article 4 of Council Directive 79/7/EEC of 19 December 1978 on the progressive implementation of the principle of equal treatment for men and women in matters of social security must be interpreted as precluding, in circumstances such as those of the case before the referring court, legislation of a Member State which requires a proportionally greater contribution period from part-time workers, the vast majority of whom are women, than from full-time workers for the former to qualify, if appropriate, for a contributory retirement pension in an amount reduced in proportion to the part-time nature of their work."