The UK is on the cusp of a perfect storm as record-breaking temperatures continue to soar, threatening to hammer productivity and economic growth across key sectors. A four-day heatwave could cut quarterly labour productivity growth by 1.5 percentage points, warns Robert Marks, lead climate economist at Oxford Economics.
Temperatures consistently reaching the high 30s and low 40s Celsius are already causing problems in workplaces that can't provide a protected environment – construction, agriculture, manufacturing, retail, and hospitality, which together account for around 27% of the UK's economic activity. Marks' projections suggest this heat-related impact will only worsen as the climate continues to warm.
The European economy is similarly at risk. The International Labour Office forecasts significant losses in working hours by 2030 due to heat stress, with agriculture and construction sectors in Western, Northern, and Southern Europe expected to bear the brunt. Allianz's research has identified extreme heat as a 'structural economic risk' for Europe, with France projected to lose an estimated £182 billion between 2026 and 2030 under a stress scenario – losses that would amount to up to 7% of gross domestic product.
The UK's workplace regulations are already under scrutiny. With no maximum temperature limit in place, employers must rely on the Health and Safety Executive (HSE) guidance to maintain 'reasonable' temperatures for their employees. This includes measures such as rescheduling work, providing more frequent breaks, and ensuring access to cool drinking water.
Experts argue that it's time to treat extreme heat as a permanent economic policy challenge rather than a seasonal nuisance. Katharina Utermöhl, head of thematic and policy research at Allianz Investment Management, warns that countries must adapt their ageing infrastructure to mitigate the economic fallout – not just for workers' well-being but also for taxpayers and businesses alike.