The article examines the application of the principle of equal treatment between men and women in the fi eld of social security, as well as Article 5 of Directive 2006/54/EC of the European Parliament and of the Council of 5 July 2006 on the implementation of the principle of equal opportunities and equal treatment of men and women in matters of employment and work. Starting from two rulings of the Court of Justice of the European Union, the a...