Laurent Tchagba holds a degree in hydraulics engineering from the Ecole Normale Supérieure des Travaux Publics (ENSTP) obtained in 1981 and a DEA in Applied Geology option Water Resources, obtained at the University of Paris in 1984. In 1988, he trained in Isotope Hydrology at the International Agency for Atomic Energy (IAEA) in Vienna, Austria.
From 1981 to 1983, Laurent Tchagba was the Deputy Head of Hydrological Sector of the South at the Water Department at the Ministry of Public Works and Transport, then Sector Manager Hydrological of the South at the Directorate of Water at the Ministry of Public Works and Construction from 1986 to 1988 and Head of the Network Operation Department National Hydrometric at the Water Department of the Ministry of Public Works and Built from 1988 to 1990.
Laurent Tchagba was Managing Director of the Guichet unique automobile from 2007 to 2010, then Managing Director of Côte d’Ivoire Logistique from 2013 to 2017 and Chairman of the Vocational Training Development Fund (FDFP) committee in 2019.
Laurent Tchagba entered the government in June 2018 as minister of Hydraulics. He was reappointed to this position on April 6, 2021, in the government formed by Prime Minister Patrick Achi. Since 2016, Laurent Tchagba has been the deputy for Attécoubé, in the district of Abidjan.