Nathy Rass-Masson

Nathy is a French-trained lawyer who joined Milieu in 2006. She specialises in the analysis of EU law and its implementation in the Member States, for the European Commission, the European Parliament and other EU bodies.
Her core expertise lies in assessing the transposition of EU legislation. She has coordinated numerous multi-country conformity assessments in the field of environment (nature protection, waste, water, air, chemicals and climate), as well as in transport, employment, migration and criminal law. She also leads and contributes to evaluations, fitness checks and impact assessments under the Better Regulation framework, on topics such as road transport social legislation, environmental crime, animal welfare, civil justice cooperation and fisheries enforcement.
Nathy has particular expertise in environmental law, access to justice, sanctions and enforcement systems, and French law, for which she regularly acts as national expert. Her work combines legal mapping and compliance analysis with the design of evaluation frameworks, stakeholder consultation and the quality review of national and comparative reports.
Nathy holds a law degree and a Maîtrise in European law from the University of Rennes I, with a thesis on access to justice in environmental matters, and a Master’s in European Affairs delivered jointly by Sciences Po Rennes, the Rennes Faculty of Law and Faculty of Economics. She is a native French speaker, fluent in English and German, with working knowledge of Italian and Spanish.