A global study involving nearly 2,900 employees across six countries found that a four-day workweek improved mental and physical health, reduced burnout, and increased job satisfaction—all without reducing pay. Participants reported stronger focus and higher productivity compared to those with a five-day schedule. The research, published in Nature Human Behaviour, highlights the need for flexible, employee-centered work models. Experts say smart work processes, not just fewer hours, are key to long-term success and well-being in the modern workplace.