Request for a preliminary ruling from the Conseil d’État (France) lodged on 3 September 2015 — Jean-Michel Adrien, Frédéric Baron, Catherine Blanchin, Marc Bouillaguet, Anne-Sophie Chalhoub, Denis d’Ersu, Laurent Gravière, Vincent Cador, Roland Moustache, Jean Richard de la Tour, Anne Schneider, Bernard Stamm and Eléonore von Bardeleben v Premier ministre, Ministre des finances et des comptes publics, Ministre de la décentralisation et de la fonction publique

(Case C-466/15)

(2015/C 381/22)

Language of the case: French

Referring court

Conseil d’État

Parties to the main proceedings

Applicants: Jean-Michel Adrien, Frédéric Baron, Catherine Blanchin, Marc Bouillaguet, Anne-Sophie Chalhoub, Denis d’Ersu, Laurent Gravière, Vincent Cador, Roland Moustache, Jean Richard de la Tour, Anne Schneider, Bernard Stamm and Eléonore von Bardeleben

Defendants: Premier ministre, Ministre des finances et des comptes publics, Ministre de la décentralisation et de la fonction publique

Question referred

Is national legislation which permits an official on secondment to an institution of the European Union to choose, for the duration of his secondment, either to suspend his payment of contributions to the pension scheme in his State of origin, in which case his pension under that scheme is fully aggregated with the retirement benefits connected with the secondment, or to continue with the payments, in which case his pension under that scheme is limited to the amount required in order to bring the total amount of the pensions, including the pension acquired under the scheme applicable to the position to which he is seconded, to the amount of the pension he would have acquired if he had not been seconded contrary to the obligations under Article 45 of the Treaty on the Functioning of the European Union, read in the light of Article 48 TFEU, and to the principle of sincere cooperation referred to in Article 4 of the Treaty on the European Union?