Prof. 'Tola Badejo started his career in the University of Ife as a Graduate Assistant in 1981 and rose through the ranks to become a Professor in 1998. During this period, he has made significant contributions to the development and teaching of courses in Entomology, Ecology and Invertebrate Zoology in the Department of Zoology. As a member of the Faculty Board of examiners, he has been involved in the assessment of written examinations and students' research projects at undergraduate and postgraduate levels.
He has supervised more than 50 undergraduate projects in the broad field of general ecology of forest soil arthropods since 1987. He has also supervised three postgraduate research projects, one of which is a PhD. Currently, he is supervising four PhD, one MSc and three undergraduate students in his department.
Prof. Badejo was involved in collaborative research on soil fauna and litter decomposition with Dr. G. Tian of the Soil Fertility Laboratory in the International Institute for Tropical Agriculture (IITA) from 1990 to 2000. During this period, they published several research findings and he was sponsored to the United States once to present part of their findings at an International Conference.
In 1995, Prof. Badejo was a member of the Man and Biosphere research team that investigated the biodiversity of the flora and fauna of Omo Biosphere Reserve in Ogun State.
He has attended and presented papers in many conferences both locally and internationally, many of which are listed on the resume and publications pages. On the average, he attends at least two local conferences in a year and international conferences virtually every year since 1992. Prof. Badejo has worked as a researcher with experts in his field in The Netherlands, Italy, Brazil and Germany at various times during his career.
Prof. 'Tola Badejo has also been involved in many multidisciplinary environmental consultancy services for government agencies and oil companies since 1992. In these studies, many of which he led, he handled the invertebrate studies aspects and contributed to the write-ups in environmental impact of human activities on the invertebrate fauna.
In October 2010, Prof. Badejo hosted the National Conference of his Professional Society (ESN) in WUSTO from October 4 to 7, 2010.
He was the convener of the Annual National Conference of Wesley University from 2011 - 2014.