India’s Heat Crisis & Mapping Legislative Vacuum

Syllabus: GS3/Environment; Climate Change

Context

• Heatwaves affect over 57% of districts, including coastal and temperate zones, traditionally confined to northwestern and central regions. However, its impact is not uniform, giving rise to what scholars increasingly term ‘thermal injustice’.

About India’s Heat Crisis

• Heatwaves are now pan-Indian, affecting humid coastal belts and hill regions. Rising temperatures combined with humidity have increased heat stress beyond dry heat conditions.
  • Heat exposure is intensifying in both frequency and duration, with severe socio-economic consequences.
• Heatwaves in India are increasing in frequency, duration, and spatial spread due to climate change.
  • Regions previously less affected (coastal, eastern, and hilly areas) are now experiencing high heat stress due to humidity (heat index effect).
  • Extreme heat events are becoming a defining feature of India’s climate risk profile.
• Heat exposure implicates Article 21 (Right to Life), and the crisis reflects limits of current climate governance frameworks.

Drivers of India’s Heat Crisis

• Climate Change: Global warming has intensified extreme temperature events. Attribution studies show a direct link between anthropogenic emissions and heatwave severity.
• Urbanisation and Heat Islands: Rapid urbanisation creates Urban Heat Island (UHI) effects, raising temperatures in cities.
  • Poor housing and lack of ventilation worsen heat exposure.
• Environmental Degradation: Loss of green cover, water bodies, and rising air pollution trap heat and reduce cooling capacity.

Socio-Economic Dimensions: Thermal Inequality

• Informal Workforce Vulnerability: Around 75–80% of India’s workforce is in the informal sector. Heat exposure leads to reduced productivity, income loss, and health risks.
  • Significant earnings decline with rising temperatures.
• Urban Poor and Informal Settlements: Slum populations face poor housing insulation, and limited access to water and electricity.
  • Heat risks are compounded by overcrowding and lack of adaptive infrastructure.
• Caste and Occupational Exposure: Marginalised communities are overrepresented in high-risk outdoor jobs, reinforcing inequality.
• Gendered Impacts: Women workers (e.g., construction labourers) face dual burdens of heat exposure and social constraints, often lacking adaptive resources.

Sectoral Impacts

• Labour and Economy: Heat stress reduces work hours, labour supply, and economic output.
  • Informal workers often continue working despite extreme heat due to survival needs.
• High-Risk Occupations:
  • Construction Workers: Exposure to radiant heat from steel and concrete increases physiological stress.
  • Street Vendors: Face both health risks and demand collapse.
  • Gig Workers: Operate under algorithmic pressure, discouraging rest breaks.
  • Sanitation Workers: Experience micro-climates up to 5% hotter; and exposure to toxic waste fumes intensifies risks.
• Public Health: Heatwaves cause heatstroke and dehydration; cardiovascular and renal stress.
  • Heat is increasingly recognised as a public health emergency.
• Migration and Livelihoods: Heat stress contributes to distress migration, especially among agricultural and construction workers.

Governance and Policy Gaps

• Heat Action Plans (HAPs): India is a global pioneer (Ahmedabad model), but implementation is uneven and urban-centric, and focus is often on awareness, not enforcement.
• Labour Protection Deficit: Informal workers lack legal safeguards, and occupational heat standards.
  • Factories Act, 1948: Limited to indoor workspaces.
  • The Occupational Safety, Health and Working Conditions Code, 2020 (OSHWC Code), 2020: It does not mandate heat standards; and leaves safety measures to executive discretion.
• Disaster Management Gap: Heatwaves are not fully integrated into disaster response frameworks, limiting funding and preparedness.
  • Heatwaves are not classified as Notified Disasters; and states face the ‘10% SDRF spending cap’, limiting relief.
• Policy Blind Spots: Lack of Heat Index-based thresholds disadvantages humid regions.
  • Informal and gig workers remain outside formal protection frameworks.

Way Forward: Towards Heat Justice

• Legal Recognition and Disaster Classification: Include heatwaves and lightning in the National Disaster list (Finance Commission recommendation).
  • Unlock National Disaster Response Fund (NDRF).
• Labour Law Reforms: Notify binding rules under Section 23 of OSHWC Code:
  • Mandatory work-rest cycles
  • Provision of PPE and hydration
• Adoption of Heat Index: Shift from temperature-based to Heat Index-based thresholds.
  • Essential for coastal and humid regions.
• Recognition of ‘Right to Cool’: Based on Article 21 (Right to Life), there should be provision of public cooling shelters, and free water kiosks.
• Sector-Specific Interventions:
  • Gig Economy: Ban algorithmic penalties during heat alerts.
  • Sanitation Workers: Special safety protocols for toxic exposure.
  • Urban Planning: Heat-resilient infrastructure.
• Income Protection Mechanisms: Need to introduce heat-linked compensation schemes; and scale models like SEWA’s parametric heat insurance.

Conclusion

• Extreme heat in India is no longer just an environmental issue, but it is a constitutional, economic, and ethical challenge. Addressing it requires a shift from advisory-based governance to enforceable rights, ensuring that thermal safety becomes a core component of the social contract.

Source: TH