This volume brings together papers presented at the Ninth International Conference "Perspectives of Business Law in the Third Millennium", held at Bucharest University of Economic Studies, Romania, on 8th November 2019. It is divided into three sections: "Reconfiguration of administrative law from the perspective of redefining social action and public interest in the state of law"; "Administrative codification in comparative law"; and "Contemporary challenges in European and comparative administrative law". The book will appeal to practitioners, researchers, students and PhD candidates in juridical sciences interested in recent developments in the field of administrative law at both the international and national levels.