Fagbohun began his academic career in January 1991 as an assistant lecturer at the Faculty of Law, Lagos State University where he rose to the rank of reader and associate professor of law in 2004 before he later became a full professor of Environmental law in 2008. He is one of the academics that contributed to the development of the curriculum for the teaching of environmental law in Nigerian universities. He had served as Head of Department of Business Law as well as Head of Department of Private and Property Law. He also served as member of the university's senate and Coordinator of the Department of Environmental Law and Allied Disciplines of the Centre for Environment and Science Education of the university. He was formerly the Editor-in-Chief of the LASU Law Journal. In 2010, he joined the Nigerian Institute of Advanced Legal Studies, NIALS as senior academic staff. At the institute, he taught Advanced Legal Methods and Research as well as Advanced Environmental Law and Policy. He had served on different editorial board including the NIALS Journal of Environmental Law, Nigerian Current Law Review and LASU Journal of Law where he served as Editor-in-Chief of the journal. Prior to his appointment as the 8th substantive Vice Chancellor of the Lagos State University, he was the Director of Studies, DS and Director of Research in the university and Chike Idigbe Distinguished Professor of Law at the NIALS.
Public services
Fagbohun served as project facilitator and resource person to the British Council and the Nigerian Bar Association. He served as a member of committee on Ecology and Environment of the Senate and the National Assembly. He served on the Advisory Committee of the Lagos State Environmental Protection Agency and on a Technical Advisory Committee on Environmental Management and Control. He was formerly a member of the Lagos State Water Regulatory Commission and member of the expert group for the development of climate change policy and legislation for the Federal Republic of Nigeria. He also served as Chair of the Lagos State Local Government Election Petition Tribunal. He is the vice chairman of the African Regional Forum of the International Bar Association as well as the regional representative of Africa on Environment Health and Safety Committee of the International Bar Association. He is a member of the Board of Trustees of the Lagos Public Interest Law Partnership. He has served as external examiner for the award of master and doctorate degree in several universities in Nigeria. He had also serve as external examiner at the University of Fort Hare, Eastern Cape, South Africa and the University of Amsterdam.
Research and honour
Fagbohun's research interest focuses on the area of law and governance, sustainable development, environmental protection, sustainable livelihood and the environmental rights of indigenous groups.
Since he became a professor, he had supervised several undergraduate and postgraduate students. He had published several scholarly articles in reputable academic journal as well as conference abstracts and monograph. He co-authored 8 books and he is the author of a book titled The Law of Oil Pollution and Environmental Restoration: A Comparative Review. Fagbohun is a receiver of numerous awards and fellowship. He is a member of several national and international professional bodies including the International Bar Association. Fagbohun, was on Nov 28 2019 honored by the President of Nigeria, President Muhammadu Buhari with the National merit award on Productivity - National Productivity order on merit. The event took place at the NAF Conference Center and Suites, Kado, Abuja.
