Understanding Hazards in India’s Construction Industry

India’s construction industry is the second-largest employer in the country, building everything from metro lines and highways to high-rise apartments. Yet behind this rapid growth lies a grim reality: the sector remains one of the most hazardous workplaces in the country, with workers facing daily risks that range from fatal falls to slow-killing lung diseases. Understanding these hazards, who they affect, and what protections exist is essential for anyone studying public health, occupational safety, or workforce welfare.

The scale of the construction workforce 🔗

The construction sector employs an enormous number of people. As per the labour ministry, more than eight million workers are engaged in building and other construction works across the country, and other estimates place the figure of unorganised construction workers at over 44 million. Most of these workers are migrants, unskilled or semi-skilled, and employed on a casual basis. This temporary nature of employment, combined with weak bargaining power, makes them one of the most vulnerable segments of the unorganised labour force.

The numbers around accidents are equally striking. According to the British Safety Council, construction is the second most hazardous industry in the country, with an average of around 38 fatal accidents a day. A 2021 study by IIT Delhi estimated that nearly 48,000 people involved in construction die every year due to falls from height, electrocution, and collapsing walls or scaffolding.

Overview of construction hazards 🔗

Construction sites are dynamic environments where multiple trades work simultaneously – masons, carpenters, welders, electricians, crane operators, and rod binders. This overlap of activities creates a wide spectrum of hazards. They can be broadly grouped into physical, chemical, ergonomic, and psychosocial categories.

Working at heights 🔗

Falls from height are the single biggest cause of fatalities at Indian construction sites. Scaffolding collapses, unprotected edges, missing guardrails, and the absence of personal fall-arrest systems make even routine tasks deadly. A study published in the National Library of Medicine notes that the possibility of a fatality in construction is five times higher than in manufacturing, with most deaths involving falls from height or through openings.

Manual handling and ergonomic strain 🔗

Construction work involves repetitive lifting, carrying, bending, and twisting – often with loads far heavier than recommended. Headload carrying of bricks, cement bags, and steel rods is still common, especially among women workers. Over time, this leads to musculoskeletal disorders affecting the spine, knees, and shoulders. Awkward postures while plastering ceilings or tying reinforcement bars compound the problem.

Exposure to hazardous substances 🔗

Workers come into contact with cement, lime, paints, solvents, adhesives, and curing chemicals. Cement dermatitis, chemical burns, and respiratory irritation are common but underreported. Welders are exposed to metal fumes; painters inhale volatile organic compounds; and demolition workers may disturb asbestos-containing materials in older buildings.

Electrical and mechanical hazards 🔗

Temporary wiring, exposed cables, and contact with overhead power lines cause many electrocutions. Heavy machinery such as cranes, concrete mixers, and excavators introduce risks of being struck by moving parts, caught between equipment, or crushed by falling loads.

Struck-by and caught-in incidents 🔗

Falling tools, bricks, and materials from upper floors regularly injure workers below. Trench collapses during excavation work bury labourers, sometimes fatally. A study from Gujarat identified falls from height, electrocution, struck-by incidents, and caught-in/between hazards as the four most common causes of construction site accidents.

Health risks beyond accidents 🔗

While dramatic accidents make headlines, the slower, chronic health damage from construction work is arguably the bigger public health concern. These conditions develop over years, often go undiagnosed, and rarely qualify for compensation.

Silicosis 🔗

Silicosis is an incurable, progressive lung disease caused by inhaling fine crystalline silica dust released during cutting, drilling, grinding, or sandblasting of stone, concrete, and tiles. It is one of the most prevalent occupational diseases in the country. The Indian Council of Medical Research has estimated that around 5.3 million construction workers are at risk of silica exposure, in addition to millions in mining and quarrying.

The disease causes shortness of breath, chronic cough, and progressive lung scarring, and often coexists with tuberculosis (silicotuberculosis) – a particularly lethal combination. Globally, approximately 230 million workers are exposed to silica dust, with 34 million in China and India alone. The Lancet has reported an estimated 11.5 million Indian workers are exposed to silica annually.

Asbestos exposure 🔗

Although many countries have banned asbestos, it is still used in roofing sheets, pipes, and insulation in parts of the country. Workers handling demolition of older buildings or installation of asbestos-cement products risk inhaling fibres that cause asbestosis, lung cancer, and mesothelioma. These diseases have long latency periods, sometimes appearing 20-40 years after exposure, which makes attribution and compensation extremely difficult.

Noise-induced hearing loss 🔗

Continuous exposure to noise from jackhammers, concrete mixers, pile drivers, and generators frequently exceeds the safe limit of 85 decibels. Without hearing protection – which most informal workers do not receive – workers gradually develop noise-induced hearing loss. This is permanent and often unnoticed until it affects daily communication.

Heat stress and dehydration 🔗

Outdoor work under direct sun, especially in summer months, exposes labourers to extreme heat. Heat exhaustion, heat stroke, and dehydration are common but rarely recognised as occupational illnesses. Climate change is making this hazard increasingly severe.

Ergonomic injuries 🔗

Repetitive movements, vibration from power tools, and awkward postures lead to conditions like carpal tunnel syndrome, vibration white finger, lower back pain, and tendinitis. These do not appear in accident statistics but reduce earning capacity and quality of life over time.

Why are accidents so common? 🔗

Several structural factors explain why construction in the country remains so dangerous. First, the workforce is overwhelmingly informal and migratory, with little training in safety procedures. Research published in the Journal of Clinical and Diagnostic Research found that only 36.4% of workers used helmets, 27.7% used safety shoes, and 16.7% used gloves.

Second, contractors often subcontract work multiple times, diluting responsibility for safety. Third, enforcement of existing laws is weak, with too few labour inspectors covering vast territories. Finally, some labour union representatives have observed that on smaller projects, paying compensation to families of deceased workers can be cheaper than investing in proper safety systems – a chilling indicator of the economics at play.

Safety regulations and legal framework 🔗

Recognising these conditions, Parliament has enacted several laws to protect construction workers. The most important is the Building and Other Construction Workers (Regulation of Employment and Conditions of Service) Act, 1996, often called the BOCW Act.

The BOCW Act, 1996 🔗

The BOCW Act was enacted to regulate employment, working conditions, safety, health, and welfare measures for building and other construction workers. It applies to every establishment that employs ten or more building workers on any day of the preceding twelve months and covers a vast range of activities including construction, alteration, repair, demolition, and works related to roads, railways, dams, bridges, and power transmission.

Key provisions include registration of establishments, registration of workers as beneficiaries (those aged 18-60 who have worked at least 90 days in the past year), constitution of State Welfare Boards, and mandatory safety measures. The Act empowers the appropriate government to make rules on safe access to working places, scaffolding, demolition precautions, handling of explosives, fire safety, dust and fume control, lifting appliances, and provision of personal protective equipment.

The Welfare Cess Act, 1996 🔗

Alongside the BOCW Act, Parliament passed the Building and Other Construction Workers’ Welfare Cess Act, 1996. It levies a cess between 1 and 2 percent of the cost of construction on every employer, which is pooled into State Welfare Boards. These funds are meant to provide pensions, accident compensation, medical assistance, maternity benefits, education support for workers’ children, and loans for housing.

Other relevant laws 🔗

The Factories Act, 1948 covers construction activities related to factory premises. The Contract Labour (Regulation and Abolition) Act, 1970 governs the use of contract workers. The Employee’s Compensation Act, 1923 (formerly Workmen’s Compensation Act) provides for compensation in case of work-related injury or death. The Indian Electricity Rules and the National Building Code lay down technical safety standards. More recently, the Occupational Safety, Health and Working Conditions Code, 2020 has consolidated several earlier laws, though concerns remain that the new code may not retain all of the key protections of the BOCW Act.

Silicosis as a notified disease 🔗

Silicosis is recognised as a notifiable occupational disease under the Factories Act, 1948 and the Mines Act, 1952, and is also listed under the Schedule of the BOCW Act. States like Rajasthan and Haryana have launched silicosis policies that provide compensation to certified patients and pensions to widows, though detection and certification remain inadequate.

Gaps between law and reality 🔗

Despite a fairly comprehensive legal framework, enforcement is the weak link. Many workers are not registered with welfare boards and therefore cannot access benefits. Crores of rupees collected as cess remain unspent in many states. Subcontracting blurs accountability, and the largely informal nature of the workforce makes inspections difficult. The Supreme Court has repeatedly directed state governments to improve registration and disbursement, but progress has been uneven.

Improving the situation requires a combination of stricter enforcement, mandatory safety training, regular health surveillance, better personal protective equipment, dust suppression technologies on site, and active involvement of workers’ representatives in safety committees. The role of technology – drones, sensors, and AI-based monitoring – is also being explored on larger projects, though such tools remain rare on smaller sites.

What do you think? If you were tasked with reducing fatal falls and silicosis cases on construction sites in your own city, which single intervention – better laws, stricter inspections, mandatory training, or technology – would you prioritise, and why? And how do we ensure that informal, migrant workers, who form the backbone of the industry, are not left out of safety reforms?

References

1. https://clc.gov.in/clc/acts-rules/building-and-other-construction-workers
2. https://www.britsafe.in/safety-management-news/2022/construction-in-india-a-dangerous-business
3. https://pmc.ncbi.nlm.nih.gov/articles/PMC4709774/
4. https://www.linkedin.com/pulse/numbers-reasons-regulations-indias-construction-sector-safety
5. https://pmc.ncbi.nlm.nih.gov/articles/PMC5043201/
6. https://link.springer.com/article/10.1186/s12982-025-00872-4
7. https://www.indiacode.nic.in/handle/123456789/1989
8. https://www.indiacode.nic.in/bitstream/123456789/21040/2/the_building_and_other_construction_workers%E2%80%99_welfare_cess_act,_1996.pdf
9. https://www.deccanherald.com/india/karnataka/millions-of-workers-minimum-safety-in-construction-boom-3940155