The Subsistence

Between Smith's bargain and Clark's margin lies a third account of the wage, older than the second and grimmer than the first: the wage read from what it costs to keep a laborer in being. The preceding plate looked toward the product of the last hour. This one looks toward the person who must return to the gate tomorrow, fed, rested, housed, and able to work again. Food and shelter enter the account, but so do the maintenance of a household, the raising of another generation, and the time and expense by which a person acquires the capacity the employer hires. A society that purchases labor must continually reproduce the people who supply it. The classical question was whether the cost of that reproduction also governs the price at which the labor is bought. It offered the wage a center of gravity drawn from the life of the worker, and made the distance between the cost of that life and the value of its work one of the deepest divisions in the subject.

David Ricardo gave the distinction its canonical form in the natural and the market price of labor. The market price is what the employer actually pays, rising or falling with the demand for workers and their supply. The natural price is the amount required to maintain the laboring population without increase or diminution. But the maintenance in Ricardo's account already exceeds the body's bare minimum. What matters is the food, necessaries, and conveniences that have become essential through habit; the money wage is important because of what it buys. Ricardo expressly makes this standard vary between countries and across time within the same country. A dwelling accepted in one place can be judged intolerable in another; what an earlier generation counted a luxury can enter the necessities of its descendants. The natural price therefore contains a history of living, even as the theory gives it the office of a regulating price. To describe it as a fixed biological ration would erase part of the original argument. The floor the doctrine names is already, in its content, partly social.¹

The mechanism of return is the pressure of numbers, and its apparent inevitability gave the doctrine its bleak force. Let the market wage rise above the customary cost of maintaining a family: workers can marry, children can survive, and the laboring population can grow. As that supply expands relative to the demand for labor, the increase in wages is checked. Below the regulating level, privation and a slower growth of numbers press in the other direction. This is the demographic reasoning associated with Malthus, applied to the price of labor over a horizon long enough for population to respond. Yet the demand side can keep moving while the supply responds. Ricardo explicitly allows an improving society's market wage to remain above its natural rate for an indefinite period, as repeated capital accumulation renews the demand for workers. The later iron-law formulation hardens a conditional mechanism into an inescapable destination. The distinction matters: a tendency operating through births, survival, accumulation, and customary needs is a different claim from a prediction that every gain will inevitably be swallowed, whatever happens to the demand for work.²

Marx returns to the cost of maintaining the worker through a sharper distinction between labor and labor-power. The worker brings a capacity to work to the market, and the employer buys its use for a time. In Marx's theory, the value of this capacity is governed by the labor required to produce the means of its reproduction: the worker's maintenance, the replacement of the laboring generation, and the training needed for the particular kind of work. The necessaries include a historical and moral element; their extent depends on the circumstances in which a class of workers has been formed and accustomed to live. The capacity is lodged in a living person, so the account cannot be separated from the conditions of that person's continued life. The value of labor-power and the value created when it is exercised are distinct objects. That distinction opens the question of surplus: buying the capacity for a day need not exhaust the value the day's use of it creates. The wage packet can accordingly be read as the price of maintaining an input while the product of its use remains larger. This is the source of the Marxian question, whose force depends on the distinction even before one accepts the theory of value built around it.³

The pressure that disciplines the wage in Marx's mature account also has a history inside production. Accumulation changes the demand for labor, while technical change can release workers into a reserve of people seeking employment. The employed bargain in the presence of those who could take their places; the reserve expands and contracts with the movement of capital. Its force cannot be reduced to a population that simply breeds beyond its food. Nor does a rise in real wages by itself end the relation Marx is describing. Better maintenance and a larger surplus can develop together, with workers living more comfortably while remaining dependent on selling their capacity to work. Marx's attack on Lassalle's iron law in the Critique of the Gotha Programme makes the distinction explicit. A theory that locates poverty in a natural population constraint cannot, merely by changing the wage system, promise to abolish the constraint. Marx's objection concerns the character of wage labor and the appropriation of its product, reaching beyond a claim about how meager the worker's consumption must remain. To make him another spokesman for an immutable biological wage would miss both the mechanism and the objection.⁴

The history of industrial wages gives the permanent subsistence prediction its decisive test, while refusing the comforting story of an immediate escape. A growing product can coexist for a long time with little improvement in the real wages of those making it. Robert Allen's account of Britain's early industrialization follows precisely that interval: output per worker and profits advanced while real wages lagged, before the later nineteenth-century gains became more broadly visible. The expanding productive capacity was real; so was the delay in what labor received. Over the longer passage, sustained increases in real wages demonstrated that industrial workers could live beyond the consumption levels of their predecessors. The demographic response, the demand for labor, the productivity of work, and the institutions governing the bargain all have to be placed in time to understand that passage. The historical lesson is more demanding than either a permanent iron floor or an automatic reward for progress. The size of what can be distributed and the terms on which it is distributed can move at different speeds, leaving a generation to live inside the interval.⁵

What survives of the subsistence inquiry is the demand to put the worker's life back into the account of the wage. The resources that sustain labor must come from somewhere, even when a particular wage is inadequate: another household member's earnings, public provision, accumulated savings, or care supplied without a wage of its own. There is therefore no guarantee that an employer's payment alone will cover all the costs of reproduction, nor that an individual facing immediate need can refuse a payment that falls short. The modern reservation wage asks what alternatives the worker can choose at the time of the offer; the older reproduction question asks how the worker and the laboring population are maintained through time. They meet in the institutions that make a refusal possible, but they are different inquiries. The later plate on insurance follows the first. This plate leaves the second open, where it belongs: in the contested standard of what a working life should sustain and in the distribution of the cost of sustaining it. The next plate adds training to that life, asking what happens when the capacity sold for a wage has itself been built by years of investment.