Occupational Health, Safety and Environmental Audits
Why NOSA?
The NOSA Five Star System is not a certification checklist – it’s a comprehensive, risk-driven auditing framework designed to evaluate both the effort and the outcome of your HSE management system. Developed in South Africa and now applied globally, NOSA audits are used to:
- Benchmark performance across multiple sites
- Guide continuous improvement efforts
- Strengthen compliance and governance
- Reduce incident rates and drive zero harm

Celebrating Seven Decades of Safety Leadership
What’s Covered in a NOSA Audit?
SafetyCloud’s NOSA audits are conducted by experienced auditors who understand the real-world complexity of risk management. The system evaluates your HSE performance across 76 elements, grouped into seven key areas:
- Organisational Context and Interested Parties
- Leadership and Worker Participation
- Risk Planning and Hazard Identification
- Operational Control and Preparedness
- Legal Compliance and Evaluation
- Performance Measurement and Review
- Continuous Improvement
Audits consider both qualitative effort (what systems are in place) and quantitative experience (real-world incident data, including DIFR). The result is a star grading between 0 and 5 stars, with the highest performers qualifying for a NOSCAR Award.
NOSA China: A Global Standard in Action
NOSA’s credibility extends beyond South Africa’s borders. In China, major industrial and manufacturing players have adopted the NOSA Five Star System to strengthen workplace safety and meet international stakeholder expectations. It’s a clear signal that NOSA is not only globally relevant, but internationally respected. Want to showcase international credibility in tenders, ESG reports, or global audits? A NOSA audit offers proof.
NOSA 5 Star vs ISO: What’s the Difference?
Unlike ISO certification, which focuses on compliance with minimum standard clauses, NOSA audits evaluate the actual effectiveness of your health, safety and environmental systems. Here’s how they compare:
Feature | NOSA Five Star System | ISO Standards (e.g. ISO 45001/14001) |
Focus | Risk-driven performance and continuous improvement | Basic system compliance (yes/no approach) |
Outcome | Star grading (0–5 stars) + NOSCAR potential | Certification (pass/fail) |
Depth of Audit | 76 elements assessed annually | Full clause coverage over 3-year cycle |
Performance Data (e.g. DIFR) | Required and scored | Not mandatory |
Industry-specific Addenda | Yes (e.g. mining, forestry, education) | No |
Recognition | Local and international awards | Certification only |
About the NOSCAR Award
The NOSCAR is the highest recognition in the NOSA system, reserved for companies that consistently achieve exceptional results in both risk management effort and incident reduction. To qualify, organisations must:
- Score 95% or higher in their audit effort rating
- Maintain a DIFR below 0.8
- Win their industry category in the NOSA International Competition or sustain top performance for three consecutive years
Audit Types and Implementation Pathways
Baseline/GAP Audit
Used to identify system gaps. A full report is provided, but no star rating is issued. Ideal for new implementations.
Star-Grading Audit
A full performance-based audit that awards a star rating. Conducted annually (or more often if required).
Industry-Specific Addenda
We audit across multiple sectors with tailored protocols, including mining, education, forestry, and more.
Implementation Support and Resources
SafetyCloud offers tools and guidance to help you implement and sustain your NOSA system:
- NOSA Systems Kit (web-based templates and tools)
- Consultation and risk assessments
- Fire, W@H, machine guarding, and emergency planning support
- Internal training and system customisation
Why Occupational Health, Safety and Environmental Audits Matter
Ready to Get Started?
Join the growing number of companies using NOSA 5 Star Audits to drive true HSE excellence. Complete the form below to book your Occupational Health, Safety and Environmental Audit.
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