Questione giuridica chiave
Whether a Swiss-Turkish dual citizen may demand transfer of AHV contributions to the Turkish social insurance system.
Decisione estratta
The request is available only to Turkish nationals with no Swiss social security benefits who have left Switzerland to settle in Turkey or a third state; for dual nationals, the actually predominant nationality at the relevant time controls, and the appellant's predominant nationality remained Swiss.
Motivazione estratta
The court applied the predominant-nationality test for dual citizens. The appellant maintained strong ties to Switzerland, including children, real estate, and business links, while several Turkish connections were not sufficient to outweigh them. The factual findings were binding and the complaint was merely appellatory.