The Four-Day Work Week Needs a Theory of Production

Reducing working time has been one of socialism's oldest aspirations. The aim is not merely to make employment more pleasant. It is to reduce the share of human life subordinated to necessity, expand the realm of freedom, and ensure that increases in social productivity return to people as time rather than appearing only as profits, output, or intensified consumption. A society that can reproduce itself with less labor should require less labor from everyone.

I therefore share the goal of the four-day work week. The problem is not the objective. It is the theory of change that increasingly accompanies it.

Much of the contemporary four-day work week movement rests upon a remarkably voluntaristic account of capitalism. Its central claim is that employers have misunderstood the relationship between time and productivity. Pilot programs demonstrate that workers can often produce as much in four days as they previously produced in five. Happier workers are more focused, absenteeism declines, recruitment improves, and firms discover that shorter hours are good for business. Once sufficiently enlightened managers see the evidence, the practice is expected to diffuse.

In this account, the long working week is largely an error. Employers retain it because of habit, inherited managerial culture, or a crude equation of visible attendance with real productivity. The reformer's task is consequently pedagogical: demonstrate that the fifth day is unnecessary, persuade firms to experiment, publicize the successful cases, and allow enlightened self-interest to do the rest.

This treats the organization of working time as a misunderstanding rather than a relation of power. Marx long ago identified why capital has an interest in extending the working day. Capital does not merely purchase a finished quantity of labor. It purchases labor power for a period of time and seeks to extract as much surplus labor as possible from it. The struggle over the working day is therefore not incidental to capitalism. It concerns the division between the time necessary to reproduce workers and the additional time appropriated by capital.

The length of the working week also serves functions that cannot be reduced to immediate output. Long hours increase workers' market dependence by leaving them less time to provide directly for themselves, develop alternative institutions, participate politically, or build solidaristic forms of life outside employment. They strengthen managerial control by making the organization the dominant institution around which everyday life must be arranged. They also respond to competition. Even an employer who personally favors shorter hours operates in markets that reward cost reduction, responsiveness, expansion, and the capture of any available advantage.

This is why appeals to employer enlightenment misrecognize the problem. Capitalists are not collectively waiting to learn that unnecessary oppression is inefficient. They are compelled by market dependence and competition to seek returns, control costs, discipline labor, and exploit advantages when they appear. Individual managers may choose otherwise at the margins, but voluntarism cannot explain how a shorter week becomes a general social right rather than a selective organizational perk.

Aaron Benanav's critique of post-work politics helps clarify the larger structural problem. Benanav argues that mature capitalism is characterized less by the imminent disappearance of work than by global productive overcapacity, weak profitability, insufficient productive investment, and an abundant supply of labor. Under these conditions, labor often remains cheap. Firms may adopt labor-saving technologies, but there is no automatic economic law compelling them to replace inexpensive workers with costly machinery merely because the technology exists.

This undermines the familiar post-work expectation that automation will generate an expanding surplus from which society can finance liberation from employment. Overcapacity depresses profitability. Weak profitability restrains investment. Abundant labor weakens workers' bargaining power and reduces the incentive to automate. The same conditions that make a reduction in working time socially necessary also make it unlikely that capital will voluntarily deliver it.

The four-day work week movement often reproduces the same mistake as basic income politics. It imagines that a desirable outcome can be detached from the organization of production that must sustain it. Basic income depends either upon capital voluntarily sharing its profits or upon a welfare state powerful enough to tax those profits coercively, even as the accumulation process produces fewer profitable opportunities. The voluntarist version of the four-day week similarly depends upon firms discovering that they lose little by reducing hours. In both cases, the proposal avoids the prior question of who controls investment and production.

Advocates sometimes answer that unions, not benevolent managers, must impose the shorter week. This is historically and strategically more serious. Reductions in working time have generally been won through organization, conflict, and law rather than gifts from employers. A revived labor movement would be indispensable to any general reduction of hours.

But coercion at the point of employment does not by itself resolve the larger problem Benanav identifies. Firms remain embedded in competitive markets, dependent upon profitability, and unevenly positioned across sectors. A union can force an employer to concede shorter hours, just as the state can force employers to pay taxes. Yet the durability and generalizability of that concession still depend upon the organization of investment, productivity, pricing, employment, and output across the economy. Without control over those structures, shorter hours remain vulnerable to intensified work, wage reductions, outsourcing, relocation, understaffing, or exclusion from employment altogether.

The current pattern of voluntary adoption is revealing. Four-day work week experiments are concentrated disproportionately in knowledge-intensive firms employing professionals. These are precisely the workplaces in which the relationship between hours and output is most ambiguous. It is difficult to determine how many hours of research produce a scientific breakthrough, how many meetings create a useful organizational strategy, or how long a programmer must sit at a desk before solving a difficult problem. Sometimes output depends on extended concentration. Sometimes it depends on a chance insight, a well-composed team, accumulated tacit knowledge, or simply having enough slack to think.

Because productivity is hard to measure in these occupations, reducing formal hours may sacrifice relatively little observable output. The firm can compress meetings, remove performative attendance, or recognize that employees were never producing continuously during the nominal forty-hour week. A shorter week can then improve recruitment and retention without fundamentally changing the labor process.

This helps explain which firms adopt the policy voluntarily and why. Many are boutique consultancies, software companies, design firms, nonprofits, and other relatively small organizations competing for scarce professional labor. For them, the four-day week operates as a status claim and recruitment device. It signals that the firm offers autonomy, slack, flexibility, and a humane culture. In exchange for a concession whose productivity cost may be modest or impossible to calculate, the organization gains access to a stronger applicant pool and may avoid paying the full wage premium otherwise required to attract top-tier talent.

In this respect, the four-day week can become another element of professional perk culture. It sits alongside remote work, unlimited vacation, informal offices, wellness benefits, and promises of meaningful employment. These arrangements may genuinely improve workers' lives. But their organizational function is often selective. They attract workers whose labor is difficult to monitor, whose skills are expensive to replace, and whose status enhances the firm. They do not necessarily weaken capital's control. Frequently they help firms secure unusually committed workers at lower total cost.

The problem becomes clear when we ask whether the same strategy can generalize to the whole labor market. Warehouses, restaurants, hospitals, schools, transportation systems, factories, retail stores, care facilities, and call centers cannot simply declare that the fifth day was unproductive. Their labor processes are tied more directly to staffing levels, operating hours, physical throughput, and continuous service. A four-day schedule may still be possible, but maintaining output would often require hiring more workers, reorganizing shifts, accepting lower output, or making significant public investments. Those are distributive and planning decisions, not discoveries waiting to be made by enlightened managers.

Even within professional work, shorter schedules can conceal intensification. Five days of work may be compressed into four longer or more exhausting days. Workers may remain informally available on the nominal day off. Performance targets may remain unchanged while recovery time inside the working day disappears. The employer reduces visible hours while preserving the same claim over output. A formal reduction in time is not equivalent to a reduction in socially necessary labor or managerial domination.

This is why the four-day work week needs a theory of production. The central question is not whether some firms can maintain productivity after reducing official hours. It is how gains in social productivity are allocated. Under capitalism, productivity gains do not automatically become free time. They may become higher profits, lower prices, expanded output, unemployment, intensified labor, or new forms of consumption. Converting productivity into leisure is a political decision about ownership, investment, employment, and the coordination of production.

A serious politics of reduced working time would therefore have to move beyond firm-level experimentation. It would require sectoral bargaining, public employment guarantees, social insurance detached from hours worked, investment in care and public services, democratic planning of essential capacity, and institutions capable of redistributing available labor across society. It would also require collective authority over finance so that investment is not withheld whenever shorter hours conflict with private returns.

The goal should remain ambitious: to reduce socially necessary labor time, not merely to provide a premium schedule to workers already occupying favored positions in the labor market. That means asking which tasks are actually necessary, how they should be distributed, which forms of production should expand or contract, and how technological gains can be used to reduce everyone's burden rather than displace some workers while overworking others.

The historical struggle for the eight-hour day was not won because employers finally understood that exhausted workers were inefficient. It was won because workers organized, states were forced to legislate, and social power altered the permissible terms of exploitation. The next reduction in working time will likewise require more than demonstration projects and flattering case studies. It will require institutions capable of compelling and coordinating a different allocation of social time.

The four-day work week is therefore a worthy demand attached to an inadequate politics. It identifies the right horizon: less necessary labor, more time for care, culture, politics, friendship, and rest. But it too often imagines that this horizon can be reached through managerial persuasion or selective collective bargaining while leaving the control of production intact.

Capitalism has not maintained long working hours because employers collectively failed to read the latest productivity study. The working week is sustained by accumulation, competition, market dependence, and labor control. Reducing it for everyone requires confronting those structures directly. The struggle is not simply to convince firms that they can afford to give workers more time. It is to build the collective capacity to decide how society's productive powers should be used, and to reclaim the time they make possible.