self-harnessing of the workers to capitalist production in the period of real subsumption... Mistaking the individual capitalist (who, in real subsumption disappears into the collective body of share ownership on one side, and hired management on the other) rather than the enterprise as the problem, ... the workers themselves became a collective capitalist, taking on responsibility for the exploitation of their own labor. Thus, far from breaking with 'work',...the workers maintained the practice of clocking-in, continued to organize themselves and the community around the needs of the factory, paid themselves from profits arising from the sale of watches, maintained determined relations between individual work done and wage, and continued to wear their work shirts throughout the process." [ 24 ] In the Manifesto Against Labour , [ 25 ] Robert Kurz , formerly of Krisis-Gruppe argued against the traditional Marxist notion of class struggle as the motor of history. According to Kurz, there is no class-subject. The struggle between the proletariat and the bourgeoisie is not a struggle between a revolutionary class and its oppressor, but rather a struggle between two opposed interests that are integral to capitalism and form a single "labor camp". Contrary to traditional Marxism , then, Kurz asserts that the struggle against capitalism is not the struggle for the liberation of labor, but rather a struggle for liberation from labor. [ citation needed ] The Abolition of Work , Bob Black 's most widely read essay, draws upon the ideas of Charles Fourier , William Morris