10 Jan

ISO 45001:2018 Migration Guidance


ACS considers ISO 45001:2018 to be a significant development primarily due to changes in structure, and the introduction of additional concepts and themes.

It is our goal to ensure that we perform value added audits that establish an organization’s level of conformity to the standard and in doing so, help our clients understand both the intent and the philosophy behind the changes.

ACS’s philosophy is to maintain a simplistic migration approach that is easy for our clients to comprehend and apply.


Migration guidelines - ISO 45001:2018

  1. The International Accreditation Forum (IAF) has stated that organizations will have 3 years from the date of the standards publication to migrate their OHSMS to become compliant to the new standard.
  2. All current existing certificates to OHSAS 18001:2007 will expire three years after release and publication of ISO 45001:2018.
  3. Migration from OHSAS 18001:2007 to ISO 45001:2018 may be accomplished during a single visit. A minimum of one day additional time shall be added to the duration to effectively evaluate the changes and effectiveness of implementation. Based on IAF MD-21:2018 – issue 1.
  4. If a client’s OHSAS 18001:2007 certificate expires before they are able to fully migrate to the ISO 45001:2018 standard, they may be re-registered to OHSAS 18001:2007 (subject to a cut-off period to allow for subsequent migration).

The expiration date of this re-registered certificate will be within the three year anniversary of the release of ISO 45001:2018.

  1. A new certificate to the 2018 version will be issued when it can be satisfactorily shown that a client has fully met the requirements of the new standard. As is the current practice, all major non-conformities must be formally closed out and corrective actions for any minor non-conformances must be received and accepted by ACS, prior to issuance of a certificate.

Clients are also encouraged to complete an internal audit and management review against the new standard, as this exercise serves both to ensure that all requirements have been addressed in the management system and to provide easy reference to these requirements during the migration audit.