Professor Yves Le Bouthillier teaches public law, including immigration, refugee and citizenship law, as well as international law. His most recent publication, co-edited with Professor Delphine Nakache, is entitled "Citizenship Law in Canada: Acquisition and Loss of Citizenship and Citizen's Rights and Obligations" (published in May 2022 by published in May 2022 by Thomson Reuters). He is also interested in the protection of linguistic minorities and has co-edited a book on the subject.
He has served as Vice Dean of the French Common Law Program three times, completing his most recent term at the end of June 2021. In addition, from 2008 to 2016 he was Co-Director of the Secretariat of the IUCN Academy of Environmental Law. In 2007-2008 he was Director of Graduate Studies in Law. From June 2005 to December 2006 he served as President of the Law Commission of Canada. He also served on the Board of Governors of the Law Commission of Ontario. From August 2000 to June 2002, he was Scholar-in-Residence in the Economic, Oceans and Environmental Law Division of the Department of Foreign Affairs and International Trade. In 2001, the negotiating team of which he was a member won the Head of the Public Service Award for its contribution to the development and adoption of the Stockholm Convention on Persistent Organic Pollutants. Previously, from 1999 to 2000, he was responsible for human rights projects at the Agence de la Francophonie in Paris. He has also appeared before various parliamentary committees and acted as an expert in the Reference on Secession. For several years he was vice-president of the Canadian Council on International Law and co-directed the production of two books for the Council. In 2008, the Association des juristes d'expression française de l'Ontario awarded him its Order of Merit for his contribution to the promotion and improvement of legal services in French in Ontario.