OHSAS 18001 to ISO 45001 - The Transition

ISO 45001 update

OHSAS 18001

ISO 45001

1. Introducation

1. Introduction

2. Scope

2. Scope

3. References and Publications

3. Normative References

4. Concepts and Definitions

4. Concepts and Definitions

5. Requirements

5. Business' context

6. Leadership and Employee Division


8. Support

9. Business

10. Performance Assessment Improvement

ISO 45001 vs OHSAS 18001 - significant changes

Below you can find the most important changes from OHSAS 18001 to ISO 45001. Don’t hesitate to contact our technical experts if you require further information or support.



Context of the Organisation

Organisations must identify all external and internal issues that may have significant impacts and influences on the intended outcomes of their OHSMS, and the needs and expectation of other interested parties, not just their workers, in order to determine the scope of the OHSMS. This means that the company has to look beyond its own employees and consider working conditions all along the value chain. As safety risks cannot be outsourced, working conditions for contractors working for the company on site, associates, self-employed staff, volunteers, suppliers may need to be taken more into consideration.

Leadership & Obligations

There are detailed and expanded requirements for top management involvement and responsibility. Top management should demonstrate direct responsibility and commitment to occupational health and safety management by integrating the protection of health and safety into processes more, and not just by delegation.

Participation & Consultation

The requirements to ensure participation and consultation of workers in decisions affecting OHSMS are more detailed and enhanced.

Risks & Opportunities

Organisations will need to identify not just hazards and the risks to safety, health, the Occupational Health & Safety management system and the business, but also the opportunities for their improvement. Such opportunities can arise from:

• organisational changes

• elimination of occupational health and safety risks in the workplace

• adaptation of the working conditions to the needs of employees

Generally, 45001 has increased emphasis on the health of workers.

Documented information

This term replaces documents and records.

Operational planning and control

More detailed requirements in relation to multi-employer workplaces, hierarchy of controls, management of change, outsourcing, procurement and contractors.

Performance evaluation

Measurement of Occupational Health & Safety Operations that can have an impact on legal requirements, operational controls, risks, opportunities & performance and progress towards objectives.

Evaluation of compliance

More detailed process requirements including maintaining knowledge and understanding of its status of compliance.

Management Review

More detailed requirements relating to inputs and outputs of the review.

Incident, nonconformity and corrective action

More detailed process requirements for incident and nonconformity management and preventive action now replaced by risk-based approach and corrective action.

From OHSAS 18001 to ISO 45001 - The transition

A well-done preparation is the basis for every success and business improvement.

Below you will find important steps for a successful transition from OHSAS 18001 to ISO 45001 and for the implementation of your Occupational Health and Security Management System:

  1. Become familiar with ISO 45001
    Proper preparation is the key to business success. In order to reap the benefits of ISO 45001 you need to understand and apply the requirements of the standard. If you would like further information, contact us.

  2. Training
    ISO 45001 awareness training will provide you with all the necessary information regarding migration from OHSAS 18001 to ISO 45001

  3. Internal communication
    Internal communication is the foundation for successful implementation of the standard. Make sure, that the entire staff is informed about the transition from OHSAS 18001 to ISO 45001. Based on that, your next step is to create a project team

  4. Project team
    Talk to your staff and keep them informed about your goals and their roles. Build up teams, prepare and work on project plans for improved work-efficiency and motivation. Use all available resources and make the best of them

  5. GAP-Analysis
    An ISO 45001 gap analysis is the next step. Either choose a reliable and impartial party, such as TUV UK Ltd. Or do a self-assessment

    If you decide to use a certification body they will send an auditor who compares your system with the requirements of the ISO 45001 standard.

    Preventive action can be taken on any non-conforming areas. The result of the gap analysis is a realistic overview of the areas which need to be improved before the formal assessment

  6. Transition plan
    Next, your project team should create a transition plan from OHSAS 18001 to ISO 45001 in order to have a clear way towards your goal in sight

Why certify against ISO 45001 with TÜV UK Ltd.?

  • Involved in the certification of Occupational Safety Management Systems since 2001

  • TÜV UK Ltd. has set high standards for their services

  • Only Occupational Safety experts are used as ASM auditors

  • Many of our auditors have more than one qualification
    an expert auditing team can be put together to meet the specific requirements of any company

We are looking forward to your enquiry


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