When surplus capture becomes “exploitation”: A contingent, dynamic account of Marxian exploitation under modern political economy

In Marxian terms, exploitation is not merely the existence of profits or surplus capture, but a structural relation in which wage-labor systematically produces a surplus appropriated by owners or controllers of productive assets. Yet in modern political economy, measured profits can arise from many channels—competition-compatible returns, rents generated by market power, transfers, and risk premia—that are not isomorphic to the Marxian concept. We lay out a number of contingent factors that govern when surplus capture from labor becomes exploitation in the Marxian sense. We provide: (1) a clean conceptual decomposition separating labor-generated surplus from rents and transfers; (2) sufficient conditions for Marxian exploitation as a class relation; (3) a catalog of contingent amplifiers (labor-market power, product-market power, state distortion, organizational control, financialization, and social reproduction); and (4) a dynamic, finite-horizon selection framework in which time preference and trust determine which labor contracts and institutional “protocols” can persist without direct state control. The resulting view is compatible with Marx’s core structural insight while treating exploitation intensity as an equilibrium outcome of slow-moving social and institutional parameters.