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BUSINESS · OCT 19, 2026
Extreme Heat Cuts Global GDP by $3.9 Trillion Annually
MSCI Inc. reports that extreme heat reduces global gross domestic product by 2% annually due to productivity losses across the global labor force.
A study by market-research firm MSCI Inc. found that extreme heat reduces global gross domestic product by 2%, representing an annual loss of approximately $3.9 trillion. The economic decline is driven by rising temperatures that diminish the productivity of the global labor force.
The impact varies significantly by professional sector. The research indicates that workers in outdoor-reliant roles, such as construction, experience substantially higher productivity losses than office-based professionals, including bankers.
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MSCI Inc.
