The Bargain

The wage is the price at which labor is bought and sold — but to say even this is already to have decided something, and to have decided it too quickly. A price implies a commodity, and labor is the strangest commodity there is, because it cannot be detached from the person who sells it. Buy a sack of wheat and the farmer goes home; buy an hour of labor and you must take the laborer with it — their attention and fatigue, their pride, their willingness or their sullenness. You contract for the work, but what arrives is the worker.

Marshall, who admired markets as much as any economist ever has, set down the peculiarities of this one with care. Labor is perishable: an hour not worked is gone forever, so its seller cannot do what a grain merchant does and hold his stock off the market until the price improves. And the seller of labor sells himself — he must deliver the good in person, under the buyer's roof and direction — which places him, in the haggling, at a disadvantage no seller of mere things endures.¹ The law has periodically tried to deny the framing altogether, declaring in the Clayton Act that “the labor of a human being is not a commodity,” and again, internationally, that “labour is not a commodity” — pronouncements that are half economics and half moral protest, and revealing precisely because the market goes on insisting otherwise.²

So the wage is the price of a thing that is not quite a thing: the cost of a relationship dressed in the clothes of the cost of a good. Nearly everything that is difficult about the wage, and everything that is contested, follows from that single awkward fact.

And the relationship is not one between equals. Smith saw it first and put it plainest. In any dispute over wages the two sides are not evenly matched: the masters are fewer and combine more easily; the law of his day licensed their combinations and forbade the workmen's; and, above all, the master can hold out. He has stock laid by and can wait out a quarter or a year, where the worker must eat this week. “In the long-run the workman may be as necessary to his master as his master is to him,” Smith wrote, “but the necessity is not so immediate.”³

The point is not that employers are cruel. It is structural, and it would hold among saints. A bargain over the wage is struck in a room where one party can walk away and return tomorrow and the other cannot afford to leave, and a bargain struck under unequal patience does not settle where a bargain between equals would. The Webbs, a century after Smith, gave the worker's predicament its enduring name — the “higgling of the market,” weighted from the start against the side that must sell today or go hungry.⁴ The asymmetry is not a flaw that competition will grind away; it is a property of what labor is, and of what its seller cannot do without. It is the fact this whole volume keeps circling back to, because unequal power, in any bargain, moves the price.

The necessity is not so immediate — one side can wait, and the other must eat.

Grant the bargain and its asymmetry, and a surprisingly exact structure comes into view. There is a most the employer would ever pay: the value the worker's labor adds, the point beyond which the hire becomes a loss. And there is a least the worker would ever accept: the value of their next-best option — the wage at the job down the road, or, failing any other, the bare cost of staying alive. Edgeworth showed, as early as 1881, that between these two limits the bargain is genuinely indeterminate. Economics alone does not fix the price. It fixes only the range; within it, the outcome is open, to be closed by something the equations do not contain.⁵

The wage settles somewhere inside that band, and where it settles is given by power: by which party can wait, which has alternatives, which is organized — pressing the figure up toward the ceiling or down toward the floor.⁶ The width of the range is the space within which power operates. Where the worker's next-best option is nearly as good as this one, the floor rises almost to the ceiling and power has little room to move anything; where the worker has nowhere else to go, the band yawns open and the wage can be pressed nearly to the floor while the work goes on producing all the way up at the ceiling. This is the single most important picture in the study of wages, because every later question — the minimum wage, the union, the single employer, the safety net — turns out to be a question about the floor, the ceiling, or the wage's position in the gap between them.

What, then, fixes the wage within the range? Much of the history of economic thought is four answers to that one question — and each of the four is still alive, still invoked, still doing daily work in arguments that rarely trouble to name it.

The oldest answer is moral. The just wage is the figure that custom and conscience deem fair: the medieval guild's customary rate, the schoolman's just price, the encyclical's later insistence on a wage sufficient to keep a frugal worker and his family in reasonable comfort. It locates the wage not in any market but in a shared judgment of what a person is owed for an honest day's work, and it has never gone away — it surfaces every time someone calls a wage unfair without once mentioning supply or demand.⁷

The classical economists returned a darker answer. The wage tends, over time, toward the cost of producing and reproducing the worker — subsistence, and not much more — because any durable surplus above it, Malthus argued, breeds more workers, who compete the wage back down. Ricardo named this the “natural price” of labour, distinct from its fluctuating market price; the grim phrase “iron law” came later.⁸ Marx took the same machinery and turned it on its makers: what the worker sells is not labor but labour power, the capacity to work, and like any commodity its value is the cost of its production — the food, shelter, and rest required to return the worker to the gate each morning. On this account the wage sits at the floor, and the floor is set by necessity.⁹

The marginal revolution gave the answer that still rules the textbook. The wage equals the value of the marginal product — the output added by the last worker hired — since no employer will knowingly pay more, and competition among employers will let no worker be held for less. J. B. Clark, in 1899, pressed this descriptive tendency into a moral claim of startling confidence: under competition each factor of production is paid precisely what it adds, so that the distribution of income is, at its foundation, just — each receives what he himself has created.¹⁰ On this account the wage sits at the ceiling, and the ceiling is desert.

And there is Smith's own answer, the one the others tended to bury beneath their machinery: the contest. The wage is set within the range by the relative power of the two sides, and stays open until that power is settled. It measures neither pure need nor pure product but the outcome of a struggle — which is exactly why a union, a minimum wage, or a turn in the law can move it without the heavens falling, and why, absent such forces, it may drift quietly toward the floor of a range whose ceiling stands far above.

These are not antiquarian curiosities, filed away by progress. Each remains in force; each is reached for daily, usually without acknowledgment; and the quarrels among them are the quarrels of every wage debate ever held. This volume's wager is that the fourth answer is the one that contains the others — that need sets the floor, product sets the ceiling, and power decides where, between them, the wage is finally made to rest.

Stand back from the four answers and they collapse into a single dichotomy — and it is the axis on which the entire subject turns. Does the wage measure worth — what the worker's labor is actually worth, the value it adds to the world — or does it measure power — what the worker can command, given who can wait and who must eat?

The marginal-productivity tradition answers worth, and answers it almost as consolation: whatever you are paid, that is what you are worth, for the market has weighed your contribution to the last cent.¹¹ The bargaining tradition answers power, and answers it as warning: what you are paid is what you could not be denied, and a person with no alternatives will be paid little however much they produce.

Worth is what your labor adds. Power is what you cannot be denied. The wage is supposed to be the first and is so often the second.

The reason the distinction is not sterile — the reason it is the hinge of everything that follows — is that the two answers can come apart. They are forced to agree only under a single demanding condition: that competition for the worker is so fierce that any employer paying below the value of the work is instantly outbid for their labor, and the wage is driven up to the ceiling. Where that condition holds, worth and power coincide and the quarrel is moot. Where it fails — where the worker cannot freely move, where employers are few or alternatives thin — the old asymmetry reasserts itself: the wage is pressed down toward the floor while the work goes on producing all the way up at the ceiling. The gap that opens between the two is the exact measure of how much of a wage is power rather than worth.¹² That this gap is real, common, and — remarkably — measurable, is the central discovery of the modern study of wages, and the business of a later plate. For now it is enough to see what the question is my wage fair? is really asking. It asks where, in the range, the figure sits — and that is a question about power.

There is a reason the wage carries a moral charge that the price of wheat does not, and it is worth stating plainly rather than leaving as sentiment to be brushed aside. The wage is the price the world places on a person's hours; and so, unavoidably, it is read as a price the world places on the person. No one feels that the quoted price of copper passes judgment on copper. Everyone feels, rightly or not, that a wage passes some judgment on the life that is spent earning it.

This is why “a fair wage” is a phrase with moral force while “a fair price for wheat” is very nearly a category mistake, and why every society has hedged the wage about with limits — minimums, protections, the stubborn insistence that labor is “not a commodity” — that it would never think to place on the price of a mere good.¹³ The economist's first instinct is to treat all of this as noise: a sentimental residue clouding an otherwise clean exchange. The better view is that it is data. The moral charge is the trace of the asymmetry — the felt, often inarticulate knowledge that this particular bargain is struck under duress and between unequals, and that a price set under those conditions has a claim on the conscience that a price agreed between equals does not.¹⁴ The wage is the one place where the economy's arithmetic and its morality are forced to share a single number; and they have never sat easily together in it.

So the wage is a bargain, struck in an unequal room, settling somewhere in a range whose floor is need and whose ceiling is product, at a point decided by power. That one sentence is the whole of this volume in miniature, and the plates that follow are its anatomy.

Some of the plates ask what sets the ceiling — the value of the work, and what lifts it: the marginal product itself, the skill bought by schooling, the premium a market pays for danger and discomfort. Some ask what sets the floor — the worker's alternatives, and what shores them up or quietly sinks them: the safety net beneath the reservation wage, and the discrimination that lowers the floor for some and not for others. And some — the heart of the volume — ask what decides the wage's position between floor and ceiling, which is to say, who holds the power: the law that legislates a floor, the employer who is the only buyer in town, the workers who combine against him, the machine that threatens to make the bargain moot. The volume closes where the wage meets the whole of a nation's income, and the bargaining range becomes a matter of classes rather than of persons.

Through all of it runs the single question this opening plate has tried only to frame, and not yet to answer: of any given wage, how much is worth, and how much is power? We begin where Smith began — by refusing to pretend the room is level.