Health and Safety
The health and safety of people are fundamental pillars of CSN’s operations. Our preventive, systemic, and human-centered approach guides continuous actions toward safer, healthier, and more sustainable work environments. Based on international standards, investments in technology, continuous training, and a strong organizational culture, we seek to protect lives and promote the well-being of all employees and partners.
The main guidelines regarding this topic are outlined in the Sustainability Policy, the Occupational Health and Safety Management Manual, and the Occupational Health and Safety Manual for Suppliers. These documents reinforce the role of leadership in managing health and safety aspects and establish mechanisms for monitoring performance and action plans by the Board of Directors, the ESG Committee, and the Board of Executive Officers.
Management
CSN adopts a preventive and structured approach to health and safety management, based on ISO 45001, the Regulatory Standards (NRs) of the Ministry of Labor, the National Program for Occupational Safety and Health (PNSST), and the guidelines of the World Health Organization (WHO).
Additionally, through our Corporate Health and Safety Policy, we have defined the Occupational Health and Safety Management Manual and the Health and Safety Manual for Third Parties. These are based on market best practices, regulatory standards, and Brazilian and international recommendations.
The manual contains guidelines to direct the actions of all employees and contractors regarding safe and proactive behavior, legal compliance, mitigation and control of hazards and risks, and the prevention of occupational injuries and illnesses. This is achieved through ten elements that define responsibilities and the need for specific prevention tools.
The Health and Safety Management System covers 100% of employees and suppliers and is built on ten strategic elements.
Commitment and leadership
Communication
Standards and Procedures
Behavioral development
Risk management
Change management
Legal requirements
Planning
Management of suppliers and services
Skills and Abilities Management
Pillars of Occupational Health and Safety
Indicators and ResultsAdvancements in management are reflected in significant results. In 2025, key indicators showed:
- 67% reduction in the Accident Severity Rate.
- 63% reduction in lost workdays due to occupational injuries.
- More than 401 thousand hours of health and safety training delivered.
These indicators are reported in accordance with the GRI 403 and ABNT NBR ISO 45001 guidelines, with detailed tracking of accidents, lost workdays, and injury severity.
CSN reaffirms its commitment to ESG principles through the strategic and continuous management of occupational health, recognizing the physical and mental well-being of its employees as a key driver of business sustainability and long-term value creation.
Among the main initiatives are:
- Vaccination campaigns and disease screening programs.
- Periodic medical examinations, ensuring continuous monitoring of employees’ fitness for work.
- Outpatient medical services available at all operational units.
As part of its commitment to comprehensive health and well-being, the Company established the CSN 10+ Program, which includes:
- Despertar (Awakening) – Fatigue management and promotion of operational safety.
- Alcohol and Drug Prevention Program – Strengthening the safety culture and risk prevention.
- Skin Health Program – Prevention of occupational dermatological diseases.
- Mobile Healthcare Program – Expanding access to healthcare in remote units and bringing medical support closer to shop-floor employees.
- Ergonomic Management Program – Monitoring and adapting workstations to prevent injuries and improve quality of life.
- Continuous Improvement Programs – Initiatives focused on innovation and efficiency in occupational health processes.
- Quality of Life / Sentinel Program – Promoting physical and emotional well-being through integrated actions.
- Get Fit Program – Encouraging physical activity and healthy lifestyle habits.
- Healthy Mind Program – Supporting employees’ mental and emotional health.
- Smoking Cessation Program – Encouraging smoking cessation and promoting healthier environments.
CSN also intensified ergonomic monitoring and psychosocial support, with special attention to emerging post-pandemic challenges, strengthening organizational resilience and mental health support.
These initiatives reflect the Company’s belief that investing in employee health means investing in business longevity, sustainable productivity, and value creation for all stakeholders.
The strengthening of the safety culture is an ongoing process, supported by the active participation of leaders and operational teams.
Internal campaigns, behavioral audits, performance recognition programs, and SIPATMA—which was redesigned to enhance employee involvement—help reinforce collective engagement with workplace safety.
Investments and Technological Innovation
CSN continuously invests in technology to prevent accidents. Key initiatives include:
- Smart sensors;
- Remote monitoring systems;
- Lockout/Tagout (LOTO) systems;
- Digital risk management platforms;
- Tools such as 3D glasses and fitness-for-duty assessments.
Solutions such as Safety 6.0, implemented in the Steel segment in 2025, aim to integrate and unify occupational health and safety databases. The tool enhances data consolidation, visibility, and accessibility at the unit level, enabling more effective actions to mitigate risks to employees.
In the Mining segment, RISKEX supports the mapping and classification of risk-related activities and the evaluation of the effectiveness of implemented control measures.
The AGIR Program represents a new level of excellence in safety management. Focused on reducing high-potential risks and preventing fatalities, the initiative incorporated new pillars into its framework in 2025:
- Leadership
- Critical Risk Management and Process Safety
As a result of these actions, in 2025 the Company recorded a 10% reduction in events that could have resulted in fatalities or life-threatening injuries compared to 2024.
During the same period, the recordable injury frequency rate, including both lost-time and non-lost-time injuries among employees and contractors, remained at 1.9 per million hours worked.
The health and safety governance structure includes:
- Executive and local committees, with regular meetings and performance reviews;
- Active employee participation, with a leading role in initiatives and decision-making processes;
- Continuous improvement of safety practices, based on lessons learned and innovation.
CSN establishes clear and public Health and Safety targets aligned with its ESG commitments:
- Reduce the accident frequency rate by 30% by 2030;
- Maintain a zero-fatality rate;
- Reduce lost workdays due to occupational injuries;
- Achieve continuous improvements in TRIFR (Total Recordable Injury Frequency Rate). In 2025, the Group achieved a TRIFR of 1.90, with CSN Mineração standing out by already surpassing its target, recording a rate of 1.04.
Caring for people is our priority. CSN’s health and safety management is driven by values, results, and, above all, a commitment to life.
Performance
The identification and analysis of risks and impacts on OSH are carried out using qualitative and/or quantitative methodologies appropriate to each situation. The identification and analysis of risks and impacts on OSH are considered throughout the life cycle of the projects, from their basic conception to their eventual deactivation, passing through the design, construction, operation and improvement. The identification and analysis of risks and impacts on OSH are used to direct the management of all activities, routine or non-routine, and processes in order to prevent the occurrence of potential or real losses.
For issues related to health and safety at work, 100% of our employees, both in-house and outsourced, are covered by formal health and safety committees. The committees that deal with the matter, at the operational, managerial and leadership levels, are the following:
- Central Safety Committee – Business Unit;
- Corporate and Directive Committee on Occupational Health and Safety;
- Leadership Committee;
- Contracts Committee;
- Working groups for NRs (10, 12, 13, 20, 33 and 35).
At CSN, we carry out occupational examinations, in addition to providing assistance, which not only served to protect the health of employees, but also to assist in the demographic monitoring of our population, allowing us, based on the results obtained in these medical evaluations, to maintain programs in place. prevention and health promotion programs that already exist, such as the PPAE (Program for the Prevention of Alcohol Abuse and Narcotics), ergonomic programs, social support, occupational physiotherapy, in addition to the elaboration and implementation of the Viva Mais Program, with quality of life and health promotion.
Additionally, we have a mental health program structured in the main units of the Group, which, through a process of evaluation and diagnosis primarily conducted via periodic exams (ASO), maps out occupational risks related to the topic. Based on this information, action plans are developed to mitigate these risks, promote emotional well-being, and raise employee awareness about the importance of mental health. These plans include training sessions and workshops on stress management, resilience, and mindfulness practices. Furthermore, when a need is identified, employees are referred for psychological treatment and receive continuous monitoring to track their progress.
- Hearing Conservation Program;
- Respiratory Protection Program;
- Ergonomics Program;
- Awakening Program;
- Program for the Prevention of Alcohol Abuse and Use of Narcotics (PPAE).