The paper provides a comparative analysis of the implementation of the recently adopted laws on administrative procedure in the five Western Balkan administrations. First the paper confirms the compliance of the laws with the principles of good administrative behaviour that have been established by the Council of Europe recommendations, the Charter of Fundamental Rights of the European Union and the Principles of Public Administration. Subsequently, the application of these principles in practice is reviewed on the basis of three sample administrative procedures. Finally, the paper identifies the main implementation challenges and their causes as well as suggests measures for overcoming the challenges on the basis of experiences from EU and OECD member states.