The Cost of Poor Sleep to UK Workplaces

Poor sleep is often treated as a private matter, but its effects reach the balance sheet. RAND Europe has estimated that insufficient sleep costs the UK economy up to £40 billion a year, equivalent to around 1.86% of GDP, with roughly 200,000 working days lost annually.

The cost appears in two ways. The first is absence, where people are too unwell or too tired to work. The second is presenteeism, where people are at work but performing below their best. RAND Europe found that both contribute to the total, which is part of why the figure is so large.

Sleep rarely sits on its own. The Health and Safety Executive recorded 16.4 million working days lost in 2023/24 to work-related stress, depression or anxiety, which accounted for 46% of all work-related ill health. Stress and disrupted sleep frequently travel together, so the two challenges overlap.

Deloitte has estimated the cost of poor mental health to UK employers at around £51 billion a year. Encouragingly, the same analysis found that employers see an average return of £4.70 for every £1 invested in supporting the mental health and wellbeing of their workforce, which suggests that action is not only humane but financially sound.

There is no single fix, but the direction is clear. For organisations, that can mean treating workload, recovery time and a culture of rest as wellbeing issues. For individuals, the NHS advises aiming for 7 to 9 hours a night with a consistent routine. Small, sustained changes tend to matter more than dramatic ones.