SUBSIDIARITY PRINCIPLE IN THE SPHERE OF LEGAL LIABILITY AND BEYOND (EXPERIENCE OF THE REUPLIC OF AZERBAIJAN)

Abstract. This article examines the principle of subsidiarity in the legal system of the Republic of Azerbaijan, highlighting its role in various branches of law (civil, family, administrative, criminal) to ensure fairness and efficiency. Subsidiary liability promotes the fulfilment of obligations and regulates non-obligatory legal relations. From a constitutional perspective, the study analyses the relationship between subsidiarity, proportionality and the unity of the State, emphasising its adaptation from private to public law. The research confirms its importance in decentralisation, governance and legal order. The results show that subsidiarity strengthens political stability, public trust and the protection of human rights, while contributing to sustainable development. The constitutional interpretation of the principle varies according to the international obligations assumed by the state.