A year after 41 employers moved to a four-day week with no loss of pay, 38 have kept it.
Productivity, measured in different ways, was flat or higher in most. Sick days fell. Resignations fell sharply. Several firms reported that recruiting became easier.
It has not worked everywhere. Businesses that rely on continuous coverage, such as clinics and shops, found it harder, and some adopted staggered schedules instead. But the early evidence is hard to dismiss.