Four-Day Work Week: What Labour Experts Say

Labour experts largely view the four-day work week as a viable model that can improve employee well-being and maintain or even boost productivity, but they emphasize that success depends on how it is implemented. The core idea is simple: employees work fewer days—typically around 32 hours—while keeping the same salary and benefits, with the expectation that they maintain or increase their output. This article explains what labour experts argue about the four-day work week, the evidence behind it, the challenges, and what organizations should consider before adopting it.

What Labour Experts Actually Argue

Labour experts—including economists, organizational psychologists, and HR researchers—generally agree that the traditional five-day, 40-hour work week is not sacred. Many point to historical shifts: the 40-hour week became standard after the Great Depression, and work patterns have changed dramatically since. The four-day week is often framed as a natural evolution, especially in knowledge-based industries where output matters more than hours logged.

However, experts do not speak with one voice. Some argue that a universal four-day week could hurt industries that rely on continuous operations, like healthcare or manufacturing, unless staffing is adjusted. Others caution that the model can backfire if it leads to compressed workdays with longer hours, which can increase stress and burnout. The consensus among labour researchers is that the four-day week works best when it is genuinely about reducing hours, not squeezing the same work into fewer days.

The Evidence from Trials and Studies

Several high-profile trials have shaped expert opinion. The most cited is the UK trial conducted in 2022, involving around 60 companies and nearly 3,000 workers. Researchers from the University of Cambridge and Boston College found that most companies maintained or improved productivity, and employee burnout significantly decreased. Revenue stayed stable or grew in most participating firms.

Iceland ran large-scale trials between 2015 and 2019, with over 2,500 workers (about 1% of the working population) moving to a four-day week without pay cuts. The trials reported maintained or improved productivity, and worker well-being rose sharply. Similar experiments in Japan, New Zealand, and Spain have produced comparable results, though experts note that these trials often involve self-selected companies that are already open to change, which may skew outcomes.

How the Four-Day Week Typically Works

There is no single model, but most implementations fall into one of these categories:

Compressed hours: Employees work four 10-hour days instead of five 8-hour days. Total hours stay the same, but the schedule changes.
Reduced hours: Employees work four 8-hour days (32 hours total) with the same pay. This is the model most labour experts advocate, as it actually reduces work time.
Staggered days: Different teams take different days off to maintain coverage, often used in customer-facing roles.
Seasonal or pilot: A company tests the four-day week for a set period, then evaluates outcomes before making it permanent.

Experts stress that the reduced-hours model is the one that delivers the most consistent benefits. Compressed schedules can still lead to fatigue, and some studies show that 10-hour days increase the risk of errors and injuries in physically demanding jobs.

Potential Benefits: What Experts Highlight

Labour experts point to several evidence-backed advantages:

Improved well-being: Employees report lower stress, better sleep, and more time for family and leisure. The UK trial found that 71% of employees had lower burnout levels.
Higher productivity: Many companies report that workers focus better and waste less time on non-essential tasks. When hours drop, meetings often shorten and distractions decrease.
Better retention and recruitment: A four-day week is a powerful perk. Companies in trials reported reduced turnover and a larger pool of job applicants.
Environmental and cost savings: Fewer commutes mean lower carbon emissions and less spending on transport. Some companies also save on office energy costs.

These benefits are not universal, but they are common enough that many experts view the four-day week as a serious option for organizations that can manage the transition.

Common Challenges and How to Address Them

Experts also identify real obstacles. One major concern is client expectations: if a company is closed on Fridays, clients may take their business elsewhere. Solutions include having a rotating day off or maintaining a small on-call team. Another challenge is workload distribution—some roles, like sales or support, require constant availability. In these cases, experts suggest staggering schedules or using part-time coverage.

There is also the risk of “presenteeism” in reverse: employees might feel pressured to work on their day off to prove they are not slacking. Clear policies and a culture that respects boundaries are essential. Finally, managers need training to focus on outcomes rather than hours, which is a significant shift for many organizations.

Costs and Economic Considerations

For employers, the main cost is potential loss of output if productivity does not rise. In industries where output is directly tied to hours (e.g., hourly manufacturing), a four-day week without pay cuts increases labour costs per unit. Experts note that this is why the model works best in knowledge work, where productivity is harder to measure but often improves with better focus.

There are also broader economic questions. Some economists worry that a widespread shift could reduce overall economic output, though others argue that increased efficiency and lower health costs could offset this. For workers, the benefit is clear: more free time without a pay cut. However, experts caution that the model is less feasible for low-wage workers who may need overtime pay to make ends meet.

How to Decide If It’s Right for Your Organization

Labour experts recommend a structured approach before adopting a four-day week:

Assess your industry and roles: Identify which positions can realistically reduce hours without hurting output.
Run a pilot: Start with a trial period (e.g., 6 months) and measure productivity, employee satisfaction, and customer feedback.
Involve employees: Ask workers what schedule they prefer and what barriers they foresee.
Set clear metrics: Define what success looks like—output, quality, retention, absenteeism.
Review and adjust: Use the data to decide whether to continue, modify, or end the experiment.

Experts also emphasize that the four-day week is not a one-size-fits-all solution. It may work brilliantly for a tech startup but be impractical for a 24/7 hospital. The key is to design a model that fits the organization’s needs and to be willing to adapt.

Frequently Asked Questions

Does a four-day work week mean working 32 hours or 40 hours?

It depends on the model. The most common interpretation is 32 hours (four 8-hour days) with the same pay, which is what most trials have tested. However, some companies use a compressed schedule of four 10-hour days, which keeps total hours at 40. Labour experts generally recommend the 32-hour model because it actually reduces work time and delivers the well-being benefits.

Will a four-day work week reduce my salary?

In most trials and successful implementations, salaries remain the same. The model is designed to maintain pay while reducing hours. However, some companies may offer a four-day week with a proportional pay cut, especially in sectors where productivity cannot be maintained. Always clarify the terms with your employer.

What happens if my company can’t maintain productivity?

If productivity drops, the company may revert to a five-day week or adjust the model (e.g., longer hours on working days). Experts recommend a trial period to test feasibility. If the trial fails, it’s not necessarily a failure—it provides data to make an informed decision.

Is the four-day week legal?

In most countries, there is no law mandating a five-day week; it’s a matter of employment contracts. As long as working hours comply with labour laws (e.g., maximum weekly hours, overtime rules), a four-day week is legal. Some countries have even introduced pilot programs to encourage it.

Can the four-day week work in retail or healthcare?

Yes, but it requires careful planning. Retail stores can stagger days off to ensure coverage. Hospitals can use longer shifts (e.g., 12-hour shifts) to cover a four-day week, though this may increase fatigue. Experts suggest that these industries can adopt the model with scheduling adjustments, but it’s more complex than in office settings.

What is the main argument against the four-day week?

The main argument is that not all jobs can reduce hours without a loss of output. Critics also worry about the cost to employers, especially small businesses, and the potential for increased stress if workloads are not adjusted. However, proponents argue that with proper planning, these issues can be mitigated.

Method: the standard formula for this calculation, rounded as each result states. See how the calculators work or report an error.

More cards in this drawer

The whole Numbers and Powers drawer →