The steps to migrate from your current OHSAS 18001 certificate to the ISO 45001:2018 standard will follow the rules defined by the International Accreditation Forum (IAF). Depending on your current certification, transition will take one of the following routes:
An accredited OHSAS 18001 certificate will be migrated through a seamless process to ISO 45001:2018 during the 3 years after publication as described by IAF.
A non-accredited OHSAS 18001 certificate will follow a specific procedure which will make the transition to ISO 45001:2018 as smooth as possible.