In 1987, Albert Ondo Ossa passed the competitive examination for the faculties of economics and management in Dakar (Senegal). He then went through all the university grades at the Omar Bongo Ondimba University to become from 1988 to 1990 head of the economics department and then in 1990 dean of the faculty of law and economics. In 1993, he founded, within the same university, the Laboratory of Applied Economics (LEA) of which he is the director, and whose journal has been published since 2013. In 1996 he obtained the rank of full professor. This academic career is also characterized by union activism. He was a member of the SNEC (National Union of Teachers and Researchers) from 1990 to 1998. This was the first free union which made a decisive contribution, in 1990 in Gabon.
Albert Ondo Ossa has contributed to and/or conducted work in the sub-region on questions of coordination of budgetary policies, monetary policies, and other economic, social and political issues. He has worked in particular as a consultant to the Ministry of Planning of Gabon and the United Nations on the Gabon 2025 project.