What Is ISO 45001?
Also known as: ISO 45001:2018, OHSAS 18001 replacement, occupational health and safety management
Definition
ISO 45001 is the international standard for occupational health and safety (OH&S) management systems. Published in 2018, it replaced OHSAS 18001 and requires organizations to identify hazards, control risks, involve workers and continually reduce work-related injury and ill health.
ISO 45001 Explained
ISO 45001:2018 uses the same high-level structure as ISO 9001 and ISO 14001. It adds specific emphasis on leadership accountability, worker consultation and participation, and hazard identification that covers routine and non-routine activities, contractors and visitors. Organizations that held OHSAS 18001 had to migrate by the end of the transition period set by accreditation bodies.
On a plant floor the standard shows up as hazard registers, risk assessments for machines and processes, lockout/tagout procedures, permit-to-work, personal protective equipment rules, incident and near-miss investigation, emergency preparedness and training records. Auditors sample evidence that controls follow the hierarchy of controls: eliminate, substitute, engineer, administer, then PPE.
ERP is a supporting system. Maintenance modules hold preventive maintenance of guards, interlocks and pressure vessels. Training records tied to employees or work centers show who is qualified to run a press brake or forklift. Nonconformance or CAPA workflows can track incident corrective actions. In SAP, EHS and Plant Maintenance cover much of this. In SyteLine, Infor LN or NetSuite, plants commonly use maintenance work orders plus custom records or a separate EHS tool.
Certification comes from an accredited certification body. It is distinct from legal compliance with regulations such as OSHA in the US, though the system helps demonstrate it. Netray does not certify safety systems; we help connect operational records already in the ERP to the audit evidence.
Why It Matters
- Injury cost, downtime and insurance premiums make safety a financial issue as well as an ethical one.
- Customers and contractors often require ISO 45001 evidence during supplier approval.
- Overdue maintenance on safety-critical equipment is a classic audit finding that ERP alerts can prevent.
- Training and competence records must be current, or operators may run machines they are not qualified for.
In Practice
An auditor asks how the plant ensures light curtains on a stamping press are tested. The maintenance planner shows a recurring preventive maintenance order in the ERP for that asset, with completion signatures for the last 12 months and one overdue test that triggered a corrective action. That single trace answers the request without a paper search.
Frequently Asked Questions
Does ISO 45001 replace OHSAS 18001?
Yes. ISO 45001 superseded OHSAS 18001, and certified organizations had to migrate within the transition period.
Is ISO 45001 the same as OSHA compliance?
No. OSHA is US law. ISO 45001 is a voluntary management system standard, though it helps organize evidence of legal compliance.
Can ISO 45001 be combined with ISO 9001 and ISO 14001?
Yes. The common structure allows an integrated management system and combined audits.
Related Terms
ISO 14001
ISO 14001 is the international standard for an environmental management system (EMS). Organizations use it to identify environmental aspects, meet legal obligations, set objectives and improve performance. The current edition is ISO 14001:2015, and certification is by third-party audit.
ISO 9001
ISO 9001 is the international standard specifying requirements for a quality management system, enabling an organization to consistently provide products and services that meet customer and regulatory requirements and to improve through a process-based, risk-aware approach.
TPM (Total Productive Maintenance)
TPM (Total Productive Maintenance) is a company-wide approach to equipment reliability that shifts routine care to operators, builds structured planned maintenance, and targets the elimination of breakdowns, speed loss, and defects caused by equipment condition.
MTTR (Mean Time To Repair)
MTTR (Mean Time To Repair) is the average time required to restore a failed asset to full operating condition, calculated as total repair time divided by the number of repairs. It measures maintainability rather than reliability.
Poka-Yoke
Poka-yoke is a mistake-proofing technique that designs a process or fixture so a human error either cannot occur at all or is detected immediately, before it becomes a defect passed to the next operation.
Working with ISO 45001 in a live environment? Our engineers do this every day - and our AI agents automate most of it.