Australia Just Proved The Four-Day Work Week Works And The Data Is Hard To Argue With
A new peer-reviewed study in Nature's Humanities and Social Sciences Communications journal has delivered compelling evidence that the four-day work week is not just a nice idea but a genuinely viable one. Researchers from Deakin University tracked 15 Australian companies that trialled the 100:80:100 model between 2022 and 2024. Workers kept 100% of their pay, worked 80% of their previous hours, and committed to maintaining 100% of their output. Not one company reported a drop in productivity. Six said output actually increased. The other nine said it stayed the same. When the trial ended, 14 of 15 chose to keep the four-day week permanently. The companies spanned property management, publishing, and health technology, making the findings harder to dismiss as niche. "As we grapple with high workplace burnout and the productivity gains predicted from AI, a four-day work week could be an interesting part of both those conversations," said study lead Professor John Hopkins of Deakin University.
The research also revealed why the model works when it does. The most successful adoptions were not simply about cutting one day. Companies restructured their workflows first, eliminating unnecessary meetings and low-value tasks. Workers ended up doing four days of focused, higher-quality work rather than cramming five days into fewer hours. Burnout reduction was a stated goal for six of the 15 companies, and a 2025 survey found one in two Australian workers currently experiences it. More than 200 British companies have permanently adopted the four-day week without cutting pay, and a 2024 German trial showed no significant drop in financial performance. The evidence keeps stacking up. The question is no longer whether it works. The question is who does it next.
