India’s textile industry is emerging as a major global manufacturing hub due to shifting supply chains and rising international demand. However, extreme heat and climate stress are increasingly threatening worker productivity, industrial efficiency, and labour welfare. The crisis reflects the growing intersection between climate change, labour rights, and industrial sustainability.
The textile sector, one of India’s largest labour-intensive industries, employs nearly 45 million people and forms the backbone of the country’s manufacturing workforce. India also produces around 39% of the world’s cotton, making it central to global textile supply chains.
Growing Heat Stress in the Textile Sector
Extreme temperatures are emerging as a hidden “thermodynamic crisis” within textile manufacturing clusters. Factory temperatures in several industrial hubs frequently exceed 35–40°C, far above the safe working threshold of around 30°C.
According to global estimates, heat stress caused nearly 259 billion labour-hour losses annually during 2001–2020, resulting in economic losses of around $600 billion each year. In
2024 alone, heat stress reportedly caused around 247 billion labour-hour losses globally.
Studies indicate that labour productivity declines by nearly 2% for every 1°C rise in temperature, while output losses may reach around 4% during extreme heat days.
Reasons Behind the Crisis
Climate Change and Heatwaves
India is warming faster than the global average, as highlighted in the Intergovernmental Panel on Climate Change AR6 report. Frequent and intense heatwaves are increasing thermal stress in major textile hubs.
Poor Industrial Design
Many factories were built for cooler climatic conditions and lack adequate ventilation, insulation, or cooling infrastructure. Consequently, indoor temperatures become dangerously high during summer months.
Informal Labour Conditions
Over 80–90% of textile workers are employed informally without adequate labour protections, regulated breaks, or occupational heat safety measures.
Global Supply Chain Pressure
International brands impose strict production timelines and financial penalties for delays. This forces factories to continue production despite unsafe working conditions, increasing worker vulnerability.
Impact of Heat-Induced Productivity Loss
Labour and Economic Losses
Extreme heat reduces working capacity, lowers efficiency, and contributes to massive labour-hour losses, negatively affecting economic productivity.
Industrial Slowdown
Factories are often forced to shorten working hours or reduce production during peak heat conditions. In some cases, output may decline by up to 50%.
Health Risks
Heat exposure above 35°C can cause:
- Fatigue
- Dehydration
- Heat exhaustion
- Heatstroke
This significantly reduces workers’ physical capacity and increases occupational health risks.
Threat to Employment
By 2030, India may lose nearly 5.8% of total working hours due to heat stress, potentially affecting around 34 million jobs and disrupting industrial supply chains.
Key Challenges
Policy and Legal Gaps
Heat stress remains poorly recognised within labour laws and occupational safety frameworks. Existing labour codes lack clear thermal safety standards for factories.
Infrastructure Constraints
Installing cooling systems, ventilation mechanisms, and climate-resilient retrofits is expensive, especially for MSMEs operating on low margins.
Buyer-Driven Pressure
Global supply chains prioritise low-cost and fast production. Similar vulnerabilities were witnessed during the COVID-19 pandemic when international buyers cancelled textile orders worth nearly $2.8 billion, severely affecting workers and manufacturers.
Data Deficit
There is inadequate monitoring of indoor workplace temperatures, worker health indicators, and heat-related productivity losses.
Way Forward
Heat-Responsive Labour Policies
Occupational safety laws should include mandatory heat safety standards, rest breaks, hydration access, and thermal monitoring systems.
Climate-Resilient Industrial Design
Factories should adopt better ventilation, passive cooling systems, heat-resistant roofing, and energy-efficient cooling technologies.
Worker Welfare Measures
Employers should provide cooling stations, flexible working hours, protective equipment, and medical support during extreme heat periods.
Sustainable Supply Chains
Global brands must adopt responsible sourcing practices that prioritise worker welfare over unrealistic deadlines and excessive production pressure.
Data and Research
Real-time monitoring of heat stress, productivity, and worker health is necessary for evidence-based policymaking.
Conclusion
India’s textile heat crisis demonstrates how climate change is becoming an economic and labour challenge alongside an environmental issue. As India strengthens its position in global manufacturing, ensuring climate-resilient factories and protecting workers from extreme heat will be essential for sustainable industrial growth, labour welfare, and long-term competitiveness.