Heatwave May Melt 4% Of GDP, Raise Medical Bills, Dent Productivity

Heat-related illnesses raise medical expenditure during peak summers. Severe heatstroke treatment can cost between Rs 1 lakh and Rs 2 lakh per patient, potentially wiping out a working family's savings. The article notes that 40% of urban and 60% of rural households resort to borrowing or selling assets to pay heatstroke bills, with weeks of lost income during recovery. It also cites that more than 90% of heatstroke cases could be prevented with early intervention, better heat action planning, and health system readiness. Simple preventive measures include staying hydrated, avoiding peak heat hours, and early symptom recognition.

On April 24, 2026, the India Meteorological Department issued widespread heatwave alerts across Haryana-Chandigarh-Delhi, Punjab, East Rajasthan, Bihar, Vidarbha (Maharashtra), Chhattisgarh and Jharkhand. Economists and health experts warned that extreme heat could squeeze economic growth, raise medical costs, and reduce productivity. Analyses cited in the article indicate heat has already accounted for about $159 billion in lost productivity (roughly 5.4% of India’s income) and over 160 billion work hours lost annually. Projections suggested heatwaves could cost 2.5-4.5% of GDP by the end of the decade, with some estimates up to 8.7% by mid-century absent policy action. Heat-exposed sectors include agriculture, construction and informal urban labour, with outdoor workers earning less due to peak-heat downtime.

The article cites estimates that 247 billion labour hours were lost in 2024 in heat-exposed sectors, causing roughly $194 billion in economic damage. It notes that broader losses may have been even higher in 2024-25, according to IMD bulletins.

Back in 2021-22, India lost an estimated 160-191 billion labour hours, equivalent to about 5.4-6.3% of GDP. Studies also indicate informal workers are up to 17 times more likely to suffer productivity losses due to heat exposure.