This article reintroduces a long-forgotten argument into the debate about social justice: Durkheim's argument from “organic solidarity,” as presented in The Division of Labor in Society. “Organic solidarity” is solidarity based on differentiation. According to Durkheim, it grows out of the division of labor, but only if the latter happens “spontaneously.” Social inequality creates obstacles to such spontaneity because it distorts prices, such that they are perceived as unjust, and it undermines equality of opportunity. Hence, Durkheim's argument connects commutative justice and distributive justice. The article argues that Durkheim's argument is plausible, interesting, and relevant for today. After presenting the argument, discussing its structure and methodology, and evaluating its plausibility by drawing on related contemporary debates, it focuses on the problem of the perception of social justice and the possibility of ideological distortions. It concludes by sketching the research program that follows from Durkheim's argument. You will find the whole Article here.