When Claire Rogers was designing her experiment, she had a hunch that working less might actually mean achieving more—and fifteen Australian companies just proved her right. Between 2022 and 2023, these businesses participated in what researchers call the 100:80:100 four-day week trial: workers received their full pay while reducing their hours to 80 percent of normal, yet still maintained 100 percent of their previous output. The results, published in Nature, show that almost half of the participating companies reported a boost in productivity, while the rest saw no decline whatsoever.
What matters here is timing. Workplaces around the world are grappling with burnout at unprecedented levels, and artificial intelligence is poised to reshape how we work entirely. The question of what to do with productivity gains from automation has become urgent for employers and workers alike. A four-day week offers a concrete answer: redistribute those gains as time, not just money.
The participating firms spanned diverse industries—property management, publishing, and others—yet nearly all of them chose to continue the four-day arrangement after the trial ended. Six businesses reported measurable productivity increases. The rest, reporting no difference, still captured the real benefit of their experiment: employees who work less tend to stay longer. Echoing trials in other countries, the Australian results showed reduced staff turnover and measurable improvements in employee wellbeing, the kind of gains that typically require expensive recruitment and training when you lose someone to burnout.
According to Prof John Hopkins of Deakin University, who led the study, the four-day week deserves serious consideration as part of larger conversations about workplace culture. "As we grapple with high workplace burnout, and societal challenges about what to do with the productivity gains we're predicted to get from AI, a four-day work week could be an interesting part of both those conversations," Hopkins said. The evidence is increasingly clear: shorter weeks don't mean less gets done. They mean it gets done by people who are rested enough to do it well.
Not everyone is convinced the benefits will stick around long-term. Critics worry that productivity gains might flatten after the initial enthusiasm wears off, and that sustained savings on energy and resources might shrink. Still, a growing number of companies around the world are testing the model, expanding the evidence base beyond these fifteen Australian pioneers. Each trial adds credibility to what workers have long suspected: that the standard forty-hour week is not some immutable law of nature, but a choice we can remake.
The implications ripple outward. If companies can maintain output while cutting hours, the entire premise of how we organize work shifts. Burnout transforms from an individual problem requiring resilience training into a systemic problem with a systemic solution. And as artificial intelligence continues to raise questions about productivity, employment, and what we do with freed-up human time, the four-day week moves from fringe experiment to something that feels increasingly necessary. The Australian trial didn't just show that people can work four days and maintain their output. It showed that they can do it without sacrificing their wellbeing—and that's the kind of good news that changes how companies think about tomorrow.