What ISO 45001 is and how it differs from legal compliance alone
ISO 45001 was published in 2018 and replaced the earlier OHSAS 18001 specification. It shares the high-level structure of ISO 9001 and ISO 14001, which makes it easy to combine with quality and environmental systems into one integrated management system.
Health and safety law sets the minimum an employer must meet. ISO 45001 is voluntary and concerns how safety is managed: who is accountable, how objectives are set, how performance is measured, how decisions are consulted with workers and how the organisation learns from incidents. Legal compliance is one of its requirements — the organisation must know its legal obligations and periodically evaluate whether it meets them.
The standard follows the PDCA cycle (plan — do — check — act). Requirements are set out in clauses 4–10: context of the organisation, leadership and worker participation, planning, support, operation, performance evaluation and improvement.


