Heat stress caused a significant loss to India's labour productivity in 2025, PTI reported, citing a study. According to a study published in Nature Climate Change, India lost an estimated $9 in labour productivity for every tonne of carbon dioxide emitted in 2025.
The study also included other countries, including Nigeria, which recorded a productivity loss of $6 per tonne of CO2, followed by China at $4 and Pakistan at $3. Globally, each tonne of carbon dioxide emitted in 2025 was estimated to have cost $41 in lost labour productivity, the study said.
