Against the context of the evolution of the European Union's association agreements as transformative tools beyond the organizational boundaries, this article seeks to develop an account for understanding legislative and regulatory approximation mechanisms as the essential elements for the exercise of the Union's normative and regulatory impact. It therefore distinguishes between both concepts and provides a legal and political science explorations of what the legislative and regulatory approximations are, and what are their substantial rationale and procedural features in the context of ‘gradualist’ convergence approach enshrined in the EU-Ukraine Association Agreement.
