OHSAS 18001 to ISO 45001 Migration Guidance
Understand why OHSAS 18001 is no longer current and how ISO 45001 changes occupational health and safety management.
Standard reference
OHSAS 18001
A management decision—not only a certificate.
OHSAS 18001 was replaced by ISO 45001 and withdrawn. Organizations should use ISO 45001 for current occupational health and safety management-system certification.
What a well-used system can improve
Removes obsolete certification references
Aligns OH&S with a current international standard
Strengthens leadership involvement
Expands worker consultation
Improves risk and opportunity planning
Supports integration with ISO 9001 and ISO 14001
Designed around operating context, not company size.
- Organizations with historic OHSAS records
- Buyers reviewing old supplier certificates
- Teams updating tender documentation
- Businesses moving to ISO 45001
- Auditors reviewing legacy systems
- Certificate holders checking current validity
What the system needs to control.
- 01Current certification status
- 02Organizational context
- 03Leadership accountability
- 04Worker participation
- 05Risk and opportunity
- 06Operational control
- 07Migration evidence
Before requesting assessment
This is a practical starting list, not a substitute for the applicable standard or scheme rules.
From defined scope to maintained certificate
- Step 01
Application and scope
Confirm the organization, sites, activities and standard to be assessed.
- Step 02
Readiness and assessment
Review documented arrangements and evidence that the system operates in practice.
- Step 03
Decision and issue
Close applicable findings before an independent certification decision and issue.
- Step 04
Surveillance and renewal
Maintain the system, complete surveillance activities and renew within the certification cycle.
Standards often work together.
Occupational health and safety
Create a systematic approach to hazards, worker participation and safer operating conditions.
Environmental management
Manage environmental impacts, legal obligations, resources and improvement through one measurable system.
Quality management
Build consistent processes, stronger customer confidence and a practical system for continual improvement.
Tell us what your organization does and what the certificate should cover.
A clear scope helps align the standard, assessment and final certificate record from the beginning.