 During the single party rule of the Congolese Labour Party (PCT), he also became a member of the PCT Political Bureau in 1979 and was assigned responsibility for party organization.In addition, he was Secretary of the Central Committee in charge of the coordination of the party and the activities of mass organizations from 1984 to 1990.In 1989, he was assigned responsibility for the coordination of the activities of mass organizations in the Political Bureau; for Bokamba-Yangouma, who had been the regime's third-ranking figure, the occasion marked a decline in influence, which was related to the CSC's active opposition to applications of the Structural Arrangement Programme.