Identifying Interested Parties for an ISO 45001 OH&S Management System

ISO 45001 Clause 4.2

Identify workers and interested parties, their needs, and which become legal or other requirements.

ISO 45001 Clause 4.2 - Understanding the Needs and Expectations of Interested Parties

ISO 45001:2018 Clause 4.2 requires the organisation to determine the workers and other interested parties relevant to the OH&S management system, the relevant needs and expectations of those parties, and which of those needs and expectations have or could become legal requirements or other requirements.

The clause distinguishes workers from other interested parties. Workers are listed first because they are the primary interested party in any OH&S management system. Other interested parties might include regulators such as the Health and Safety Executive (HSE) in the UK, contractors and their workers, visitors, neighbours affected by the activities, customers, suppliers, insurers, trade unions, emergency services and the local community.

For each interested party, the organisation determines what they need or expect from the OH&S management system. A worker needs a safe place to work, suitable training and a way to raise concerns. A regulator expects compliance with applicable health and safety law. An insurer expects evidence of risk control. A contractor expects clarity about the safety arrangements that apply on site.

Why ISO 45001 Clause 4.2 Matters in Practice

The output of the interested parties review feeds into Clause 6.1.3 on legal and other requirements, where the requirements identified become inputs for planning. It also feeds into the OH&S policy at Clause 5.2, the objectives at Clause 6.2, communication at Clause 7.4, and management review at Clause 9.3.

The most efficient way to manage this is an interested parties register. A simple table listing each party, their needs and expectations, and which of those have become formal requirements is enough for most organisations. The register is a living document - reviewed periodically and updated when circumstances change, such as a new contract that brings in client-specific safety requirements, or new legislation that creates a new regulatory expectation.

This clause is often satisfied by setting up an interested parties register alongside their needs, expectations and requirements. That gives a single, neat list that can be reviewed periodically. Generic interested parties are listed first - workers, customers, suppliers, regulators, the landlord if you rent your premises - and then more specific ones, such as memberships, partnerships, accreditation schemes or insurers.

The thing to remember here is that the standard puts workers first. They are the people the system exists to protect, so their needs and expectations carry the most weight. Other interested parties matter, but the worker voice is the one the standard most wants you to hear.

When auditing this clause I check the organisation has identified all of its relevant interested parties, their needs and expectations, and the requirements that flow from them. If I have background knowledge of parties that come up regularly in a particular industry I will bring it to the audit. I also expect to see how the requirements identified link through to the legal register and the management system controls.

Practical Compliance Guidance

The IMS1 Manual sets out how interested parties are identified and recorded for the integrated management system. Section 1.4 Interested Parties provides the structure for the interested parties register.

The following alphaZ documents support compliance with ISO 45001:2018 Clause 4.2.

alphaZ document	How to use it
ISO 45001 Toolkit	The full set of documents needed to build an OH&S management system that meets the requirements of ISO 45001:2018.
F-IMS22 Interested Parties Register	Records each interested party, their needs and expectations, and which of those have become legal or other requirements.
F-IMS23 Opportunities and Risks Register	Captures the risks and opportunities that arise from the needs and expectations of interested parties.

Note - all the above files can be downloaded with an alphaZ subscription.

Frequently Asked Questions

Why does ISO 45001 list workers separately from other interested parties?

Because workers are the primary subject of the OH&S management system. The standard places strong emphasis on worker consultation and participation, and listing workers as a distinct category in Clause 4.2 reinforces that worker needs and expectations must be specifically considered, not lost in a general list.

Do all needs and expectations become legal requirements?

No. The clause asks the organisation to identify which needs and expectations have become legal requirements or other requirements. Most needs are simply expectations the organisation chooses to meet. Only some - typically those covered by health and safety legislation, contractual safety obligations or accreditation scheme rules - become formal requirements.

Do contractors count as interested parties?

Yes. Contractors and their workers are interested parties whose health and safety can be affected by the organisation's activities, and whose own activities can in turn affect the organisation's workers. Their inclusion is an important link to Clause 8.1.4 on procurement and contractor management.

UK Legislation

The following UK legislation establishes the formal requirements that flow from key interested parties such as the Health and Safety Executive. Organisations outside the UK should identify equivalent legislation in their jurisdiction.

Further Resources