Framework overlap

Does NIST SP 800-171A Rev 3 cover ISO 45001:2018?

You hold NIST SP 800-171A Rev 3 and have been told to do ISO 45001:2018. Here is how much overlaps, control by control.

34% of ISO 45001:2018 you already have

NIST SP 800-171A Rev 3 already covers about 34% of ISO 45001:2018, leaving 29 of 44 controls as genuinely new work.

Already covered 1 Likely covered 14 New work 29

What is genuinely new work

Nothing in NIST SP 800-171A Rev 3 reaches these. This is the list to scope.

5.4
Establishing Audit Programme
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
5.3
Organizational roles, responsibilities and authorities
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
7.2
Competence
7.3
Awareness
7.4.2
Internal communication
7.4.3
External communication
7.5
Documented information
7.5.2
Creating and updating
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
8.2
Emergency preparedness and response
9.1
Monitoring, measurement, analysis and performance evaluation
9.1.2
Evaluation of compliance
9.2
Internal audit
9.2.2
Internal audit programme
Show the 15 you already have
6.2.2
Planning to achieve OH&S
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
10.3
Continual improvement
4.1
Understanding the organization and its context
4.2
Understanding the needs and expectations of workers and other interested parties
4.3
Determining the scope of the OH&S management system
5.1
Leadership and commitment
6.1
Actions to address risks and opportunities
7.1
Resources
7.4
Communication
8.1
Operational planning and control
9.3
Management review

How this is calculated

Already covered means a mapping runs from a control in NIST SP 800-171A Rev 3 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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