La tutela dell’affidamento nei confronti della pubblica amministrazione. Il caso della ripetizione dell’indebito retributivo da parte della p.a.

This essay analyzes the role of legitimate expectations in cases where public authorities seek to recover undue payments. It draws on domestic and supranational sources, as well as on doctrinal and case-law developments, and assesses the coherence of the framework in light of the Constitutional Court’s ‘Convention-oriented’ interpretation (Judgment No. 8/2023). The article proposes a conceptual framework for the protection of legitimate expectations in relations between public authorities and private parties, both iure imperii and iure privatorum.