OHSAS 18001 Occupational Health & Safety Mastery
Master the legacy OH&S management system standard and its transition to ISO 45001 with clause-by-clause expertise
OHSAS 18001 shaped occupational health and safety management for two decades, was adopted by more than 90,000 organizations across 127 countries, and laid the conceptual groundwork for ISO 45001:2018. Although OHSAS 18001 was officially withdrawn on 30 March 2021, the standard remains essential knowledge for health and safety professionals navigating legacy systems, supplier audits, regulatory reviews, and ISO 45001 transitions. This course gives you the complete picture so you can read, audit, implement, and upgrade an OHSAS 18001 management system with confidence.
You will work through every clause of OHSAS 18001:2007 in order, starting with the history of the standard and the political, commercial, and technical forces that produced it. You will then build mastery of Clause 4.1 general requirements, Clause 4.2 OH&S policy, Clause 4.3 planning including hazard identification, risk assessment, determining controls, legal and other requirements, and objectives and programmes, Clause 4.4 implementation and operation including resources, competence, communication, documentation, operational control, and emergency preparedness, Clause 4.5 checking including performance measurement, evaluation of compliance, incident investigation, corrective and preventive action, records, and internal audit, and Clause 4.6 management review. You will also learn the hierarchy of controls, the PDCA cycle, leading and lagging indicators, root cause analysis, and the certification audit process.
The course closes with a deep dive into ISO 45001:2018 covering the Annex SL high-level structure, strengthened worker consultation and participation, expanded leadership accountability, context of the organization, risk-based thinking, and the practical differences that matter when transitioning a legacy OHSAS 18001 management system to the newer standard. The material is designed for health and safety professionals, OH&S auditors, safety managers, compliance officers, and consultants who need a trustworthy, accurate, and clause-by-clause grounding in OHSAS 18001 and its relationship to ISO 45001.
Whether you are upgrading a legacy management system, preparing for a supplier audit, training new safety staff, or simply rounding out your professional knowledge, this course delivers complete coverage with the regulatory precision compliance work demands. Enroll today and gain the historical context, technical mastery, and transition roadmap that the modern OH&S professional cannot afford to miss.
What you'll learn
- Trace the full history of OHSAS 18001 from BS 8800 through the 2007 revision to its withdrawal in 2021
- Interpret every requirement in Clauses 4.1 through 4.6 of OHSAS 18001:2007 with audit-grade precision
- Conduct hazard identification, risk assessment, and determine controls using the prescribed hierarchy of controls
- Build legal registers and compliance evaluation programmes that satisfy Clauses 4.3.2 and 4.5.2
- Design competence, training, communication, and consultation systems aligned with Clause 4.4
- Apply operational control and emergency preparedness frameworks to real workplace scenarios
- Conduct incident investigations and root cause analyses that drive effective corrective and preventive action
- Plan and execute internal audits and management reviews that close the PDCA loop
- Map every OHSAS 18001 requirement to its ISO 45001:2018 counterpart under the Annex SL structure
- Lead a credible transition from a legacy OHSAS 18001 system to a compliant ISO 45001 management system
Course outline
30 on-demand lessons across self-paced modules. Expand each part to see what it covers.
Foundations & framework
- Trace the full history of OHSAS 18001 from BS 8800 through the 2007 revision to its withdrawal in 2021
- Interpret every requirement in Clauses 4.1 through 4.6 of OHSAS 18001:2007 with audit-grade precision
Core concepts in depth
- Conduct hazard identification, risk assessment, and determine controls using the prescribed hierarchy of controls
- Build legal registers and compliance evaluation programmes that satisfy Clauses 4.3.2 and 4.5.2
Implementation & practice
- Design competence, training, communication, and consultation systems aligned with Clause 4.4
- Apply operational control and emergency preparedness frameworks to real workplace scenarios
Mastery & real-world application
- Conduct incident investigations and root cause analyses that drive effective corrective and preventive action
- Plan and execute internal audits and management reviews that close the PDCA loop
- Map every OHSAS 18001 requirement to its ISO 45001:2018 counterpart under the Annex SL structure
- Lead a credible transition from a legacy OHSAS 18001 system to a compliant ISO 45001 management system
Common questions
How is the course delivered?
Entirely on-demand video on Udemy. Learn at your own pace, on any device, with lifetime access once enrolled.
Do I get a certificate?
Yes — Udemy issues a certificate of completion once you finish all lessons.
What do I need before starting?
Basic familiarity with workplace health and safety concepts and terminology
Is there a refund if it's not for me?
Udemy's standard 30-day money-back guarantee applies to every course.