World Bank Warns Heat Could Cost South Asia 7% of Economy by 2050

What the World Bank's South Asia Heat Report Actually Finds

The World Bank has quantified the economic damage of extreme heat in South Asia, warning that rising temperatures are already costing the region the equivalent of nearly 31 million full-time jobs a year and could reduce the regional economy by almost 7 per cent by 2050.

In a report titled "A Livable Future: Protecting Jobs and Growth from Extreme Heat in South Asia's Cities," the bank estimates that by 2070 about 520 million people in Bangladesh, Bhutan, India, Maldives, Nepal and Sri Lanka could experience at least one month of dangerous heat each year — four times the number today. Heat is reducing labour productivity, disrupting business operations and straining health systems and critical infrastructure, the report says.

The burden falls hardest on low-income households, informal workers, women, the elderly and children. The report urges governments to treat heat not as a seasonal emergency but as a permanent planning issue, and recommends heat-resilient infrastructure, stronger Heat Action Plans, worker protections, expanded cooling, better early warning systems and public and private investment.

John Warburton, climate resilience lead for Asia Pacific at the UK's Foreign, Commonwealth and Development Office, called the situation a "development crisis" and said the UK's Climate Action for a Resilient Asia programme will work with the World Bank on knowledge, policy and investment. The report argues that city-level measures already proven to help, such as urban greening and early warnings, must be scaled up if South Asian cities are to remain engines of growth.

Why Heat Is Now an Economic Planning Problem for South Asian Cities

A productivity problem more than a weather problem

The World Bank's headline number — the equivalent of 31 million full-time jobs lost each year — is best read as a measure of lost working hours and output, not unemployment. That distinction matters because it makes heat an economic variable that businesses already feel through reduced output, and that governments can address through scheduling, infrastructure and workplace standards.

Informal workers take the first and heaviest hit

The report explicitly names low-income households, informal workers, women, the elderly and children as the most affected. In South Asian cities, large parts of the workforce earn daily wages in construction, street trade and market work, with little ability to shift hours or move into air-conditioned spaces. For them, an extreme heat day is not an inconvenience; it is lost earnings. Any policy response that ignores this group would miss the population bearing the greatest economic damage.

The 2050 GDP warning depends on what cities do next

The nearly 7 per cent reduction in the regional economy by 2050 is a projection, not a fixed outcome. The report's central argument is that heat should be built into urban planning, infrastructure investment and public policy now, and that the tools — Heat Action Plans, early warning systems, urban greening, sustainable cooling, resilience financing — already exist in part. The real question is whether the six governments covered by the report scale them up fast enough.

Foreign funding points to a wider financing picture

The UK government's statement through its Climate Action for a Resilient Asia programme signals that adaptation in South Asia is becoming an international development priority. That raises the likelihood of co-financed infrastructure and technical assistance, and it gives businesses and city governments a channel for resilience investment they can begin positioning for.

How Policymakers and Businesses Can Use the World Bank's Roadmap

• Governments in the six named countries should use existing institutions and financing mechanisms to move heat-resilient infrastructure from pilot projects to city-wide programmes — the World Bank explicitly says the roadmap can be implemented without new institutional structures.
• City authorities should scale up Heat Action Plans and early warning systems, which the report says have already shown results in South Asian cities, and combine them with urban greening and efficient cooling.
• Policymakers should design labour-protection and cooling measures specifically for informal workers, the group the report identifies among the hardest hit by lost earnings and health pressure.
• Businesses operating in South Asian cities should factor heat into workforce scheduling, facility design and supply-chain planning, since the report links heat directly to lost productivity and disrupted operations.
• Development partners and investors should align project pipelines with the report's resilience priorities, which indicate where public and private capital is likely to flow in the coming years.