39 Ni sporno, da taka nacionalna ureditev, kot je ta v obravnavani zadevi, ki je manj ugodna za določene državljane le zato, ker so izkoristili svojo pravico do prostega gibanja in prebivanja v drugi državi članici, pomeni omejitev pravic, ki jih člen 18 ES priznava vsakemu državljanu Unije (glej v tem smislu sodbi z dne 11. julija 2002 v zadevi D` Hoop, C-224/98, Recueil, str. I-6191, točka 31, in z dne 29. aprila 2004 v zadevi Pusa, C-224/02, Recueil, str. I-5763, točka 19).
39 It is established that national legislation such as that in this case which places at a disadvantage certain of its nationals simply because they have exercised their freedom to move and to reside in another Member State is a restriction on the freedoms conferred by Article 18 EC on every citizen of the Union (see, to that effect, Case C-224/98 D ` Hoop [2002] ECR I-6191, paragraph 31, and Case C 224/02 Pusa [2004] ECR I-5763, paragraph 19).