Treadmill of Production and Environmental Injustice

Allan Schnaiberg's The Environment: From Surplus to Scarcity, published in 1980, is one of the foundational theoretical texts of environmental sociology. Schnaiberg, then at Northwestern University, proposed the treadmill of production as a structural account of why advanced capitalist economies systematically generate ecological harm — and why that harm is not easily reduced by consumer choices, technological fixes, or modest policy tweaks. The treadmill metaphor came from the perpetual running required of an exercise machine: the system cannot slow down without falling off.

Schnaiberg argued that post-war American capitalism had produced a political coalition of capital, labor, and the state that shared an interest in continuous economic expansion. Capital needs expansion to generate returns on investment and to outcompete rivals. Labor has historically tied its living standards to employment levels, which require output growth. The state needs tax revenues (for welfare, defense, infrastructure) and political legitimacy (widely felt through rising standard-of-living), both of which depend on growth. This coalition, Schnaiberg observed, was remarkably stable. It could absorb challenges, including environmental ones, by promising to 'green' growth rather than to reduce it.

Growth, however, requires ever-greater withdrawals of materials from ecosystems (fossil fuels, minerals, timber, water, fish) and ever-greater additions to ecosystems in the form of wastes (CO2, pollutants, industrial by-products). These 'withdrawals and additions' constitute the physical treadmill: the biophysical consequences of an expansionary political-economic coalition. Under the treadmill logic, productivity gains are typically channeled into more output rather than less work, and technological improvements that reduce per-unit environmental impact are overwhelmed by the increase in total units produced. This dynamic — later formalized as the Jevons paradox in economics — explains why per-capita environmental impact can remain flat or rise even when individual technologies become cleaner.

Schnaiberg's treadmill was a political-economic account, drawing on Marx, Weber, and Polanyi rather than on ecology alone. It located environmental harm not in human nature, overpopulation, or technology per se, but in the specific institutional arrangement of late capitalism. This distinguished it from Malthusian accounts (too many people), from Ehrlich's IPAT formula (population times affluence times technology), and from lifestyle-focused accounts (greedy consumers). The remedy, in Schnaiberg's reading, had to be structural: altering the political coalition that drives the treadmill, not only changing the preferences of individuals within it. Subsequent treadmill scholars — Kenneth Gould, David Pellow, and Schnaiberg himself in The Treadmill of Production (2008) — extended the framework to global production chains, waste dumping, and the role of the state in promoting rather than restraining expansion.