 He worked as a chief clerk for the Office of Secondary Technical Schooling and was a member of the Association du Personnel Indigene de la Colonie, a labour union.Nguvulu was ideologically a Marxist socialist and served as president of Action Socialiste, a Congolese political party.He took a Marxist approach to analysing colonisation, stating that Africans were economically exploited for their labour and subject to racial discrimination because they were black.