India's heatwave response has improved markedly over the past decade. Early warning systems have expanded, Heat Action Plans have proliferated, and public authorities are far better prepared than they were a decade ago. Yet these advances obscure a more uncomfortable reality. The workers most exposed to extreme heat remain among the least protected.
Rising temperatures are turning what was once treated primarily as a public-health challenge into a labour-market challenge. For millions of workers in construction, transport, sanitation, street vending, delivery services, and other outdoor occupations, extreme heat increasingly shapes the conditions under which work is performed and income is earned.
The Hidden Cost of Adaptation
India lost an estimated 247 billion labour hours to extreme heat in 2024 alone. The headline figure captures the scale of disruption but obscures how its costs are distributed.
When temperatures rise, businesses continue operating, cities continue functioning, and infrastructure projects continue progressing. Much of that continuity is sustained through workers bearing the costs of extreme heat in the form of reduced earnings, forgone workdays, deteriorating health, and heightened occupational risk. For many workers in the informal economy, avoiding exposure is often not a realistic option. Income remains tied to daily presence at the worksite, and a missed day of work frequently means a missed day of earnings.
This reveals a distinctive pattern of adaptation. Economic activity continues despite rising temperatures, but much of the adjustment occurs through workers absorbing the associated costs. Rather than being managed through institutional protections, heat risk is frequently accommodated through reduced earnings, compromised health, and individual endurance.
The Limits of India's Heat Governance Framework
India's heat governance architecture has expanded significantly over the past decade. Most of these interventions, however, are designed to reduce mortality and strengthen emergency preparedness. Their effectiveness depends on whether individuals can modify their behaviour in response to heat warnings.
Early warnings and advisories can reduce risk only where workers possess the ability to postpone work, alter working conditions, or absorb temporary income losses.
The India Meteorological Department can forecast extreme temperatures, public-health systems can prepare for heat-related illnesses, and disaster-management authorities can coordinate emergency responses. Yet none of these institutions is primarily responsible for regulating the conditions under which millions of outdoor workers continue to labour during periods of extreme heat. Labour departments, meanwhile, possess limited reach across a workforce that remains overwhelmingly informal.
The result is that occupational heat risk falls between institutional mandates. The challenge is not the absence of institutions but the absence of clear ownership.
Why Heat Exposure Matters for India's Growth Model
The significance of this institutional gap extends beyond worker welfare. In an economy where millions remain employed in heat-exposed occupations, productivity losses do not remain confined to individual workers. They accumulate into broader economic costs.
Heat exposure is often framed as a labour-welfare issue. Increasingly, it is becoming a productivity issue. As temperatures rise, sectors dependent on outdoor labour face growing disruptions to output, project timelines, service delivery, and workforce availability.
These effects are particularly important because many heat-exposed sectors sit at the centre of India's development strategy. Infrastructure delivery depends on construction activity. Supply chains depend on transport and logistics networks. Urban economies depend on a wide range of outdoor and informal services that keep cities functioning on a daily basis.
Extreme heat can slow project execution, reduce labour productivity, disrupt service delivery, and increase pressure on public-health systems. What begins as an occupational risk can therefore translate into a wider economic constraint.
That poses a challenge for the vision of Viksit Bharat 2047. A development strategy that assumes stable labour productivity despite rising temperatures may underestimate the economic consequences of chronic heat exposure. As heat extremes become more frequent, occupational heat risks may become an increasingly important constraint on growth.
From Heat Management to Labour Resilience
The policy response to extreme heat has largely been organised around managing heat events. These interventions remain essential, but a hotter economy requires a broader approach.
If heat exposure is treated as an occupational risk, then access to shade, drinking water, cooling facilities, modified work schedules, and heat-health surveillance become matters of economic planning as much as worker welfare. Heat Action Plans will need to incorporate labour-market considerations alongside forecasting and awareness functions, particularly in sectors that depend on sustained outdoor work.
Conventional workplace regulation reaches only imperfectly into the informal economy. Municipal bodies can expand access to cooling infrastructure. Urban planners can incorporate heat considerations into city design. Labour departments can strengthen workplace standards where formal employment relationships exist. Public-health systems can improve monitoring of heat-related illnesses among vulnerable worker populations.
The central challenge is no longer forecasting extreme heat. It is determining which institutions are responsible for sustaining safe and productive work in a hotter economy.