Framework overlap

Does ISO/IEC 23894:2023 cover ISO 45001:2018?

You hold ISO/IEC 23894:2023 and have been told to do ISO 45001:2018. Here is how much overlaps, control by control.

45% of ISO 45001:2018 you already have

ISO/IEC 23894:2023 already covers about 45% of ISO 45001:2018, leaving 24 of 44 controls as genuinely new work.

Already covered 5 Likely covered 15 New work 24

What is genuinely new work

Nothing in ISO/IEC 23894:2023 reaches these. This is the list to scope.

6.1.2.2
Assessment of OH&S risks and other risks to the OH&S MS
6.1.2.3
Assessment of OH&S opportunities and other opportunities for the OH&S MS
7.5
Threat assessment
8.1.2
Eliminating hazards and reducing OH&S risks
8.1.3
Management of change
8.1.4.2
Contractors
8.1.4.3
Outsourcing
4.4
OH&S management system
5.2
OH&S policy
5.4
Consultation and participation of workers
6.2
OH&S objectives and planning to achieve them
6.2.1
OH&S objectives ISO 45001:2018
6.2.2
Planning to achieve OH&S
7.2
Competence
7.3
Awareness
7.4.2
Internal communication
7.4.3
External communication
7.5
Documented information
7.5.3
Control of documented information
8.1.2
Eliminating hazards and reducing OH&S risks
8.1.3
Management of change
8.1.4
Procurement
9.1
Monitoring, measurement, analysis and performance evaluation
9.3
Management review
Show the 20 you already have
10.3
Continual improvement
4.1
Understanding the organization and its context
5.1
Leadership and commitment
5.3
Organizational roles, responsibilities and authorities
7.4
Communication
5.4
Establishing Audit Programme
6.1.2.1
Hazard identification
8.1.1
Operational planning and control, general
8.1.4.1
Procurement, general
10.2
Incident, nonconformity and corrective action
4.2
Understanding the needs and expectations of workers and other interested parties
4.3
Determining the scope of the OH&S management system
6.1
Actions to address risks and opportunities
7.1
Resources
7.5.2
Creating and updating
8.1
Operational planning and control
8.2
Emergency preparedness and response
9.1.2
Evaluation of compliance
9.2
Internal audit
9.2.2
Internal audit programme

How this is calculated

Already covered means a mapping runs from a control in ISO/IEC 23894:2023 to that control. Likely covered means no direct mapping exists but both frameworks map to the same control in a third standard. New work means neither. We keep those separate rather than adding them into one friendlier number, because blending them would present a two-hop inference as a verified fact.

Coverage is not symmetric. Run it the other way and you will get a different number; both are correct.

From 332,959 cross-framework control mappings across 723 frameworks, 531 of them verified against their source documents. It does not tell you that you are compliant: a mapped control means the two standards ask for the same thing, not that you have done it.

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