Historian and academic. He dealt particularly with the history of the communist movement and the problems of the world of work. After studying the Giolittian age and the origins of Italian socialism, he concentrated his interests on the period between the two wars and on Republican Italy.

President of the Fondazione Istituto Gramsci (Rome) and of the scientific commission in charge of editing the writings of Antonio Gramsci. A historian of political thought, he has dedicated numerous studies to the Gramscian corpus, among which stand out Gramsci e Togliatti (1991), Appuntamenti con Gramsci (1999) and Modernità alternative. Il Novecento di Antonio Gramsci (2017). He has also directed numerous recovery investigations, and first editions, of the Letters from Prison and the Prison Notebooks.

Sergio Bologna lives in Italy and is known for his active participation since the 1960s in the workers' current and later, during the 1970s, in workers' autonomy. Sergio Bologna was a founding member of the organization "Workers Power" [Potere Operaio] and together with Antonio Negri and Franco Piperno formed the first general secretariat of the organization in 1969. He left the organization in 1970. In 1960 and 1970 he participated in several magazines ( Quaderni Rossi, Cronache Operaia, Quaderni Piacentini, Linea di Massa) where he contributed fruitful analyzes of capitalist development, new labor figures, the form of the state after World War II, cycles of struggle in Italy and the meaning of labor autonomy. One such analysis, and perhaps the best known in our parts, is "The Race of Moles", published in the spring of 1977 in the historical review Primo Maggio, which he founded in 1973. He has taught at the University of Trento and as a professor of Labor Movement History at the University of Padua. Recently he deals with the changes marked by the development of the tertiary sector, the new figures of intellectual workers, precarious workers and the problems of their collective organization. He also writes for the newspaper "Manifesto".