The global standard for Occupational health and safety management system i.e. ISO 45001:2018 has been published. Now many implementers of OHSAS 18001:2007 wonder what has changed. Implementers are provided with three years for migration to the new standard.

Those who are complying with OHSAS 18001:2007 can upgrade to ISO 45001:2018 with little guidance since many of the requirements are same. List of mandatory documents required by ISO 45001:2018 versus list of mandatory documents required by OHSAS 18001:2007 will help professionals understand how to transform to the new standard, and help them to understand the areas where they need to develop new documents in order to upgrade themselves.

Below is a table that compares the requirement of minimum mandatory documents required by the two standards along with the reference of clauses:

ISO 45001:2018 Mandatory Documents OHSAS 18001:2007 Mandatory Documents
Scope of the OHSMS – clause 4.3 Scope of the OHSMS – clauses 4.1, 4.4.4
OHS Policy – clause 5.2 OHS Policy – clause 4.2, 4.4.4
Roles and responsibilities – clause 5.3 Roles, Responsibilities  Authorities – clause 4.4.1
OHS risks and OHS opportunities – clause 6.1.1 Record of Hazard Identification, Risk Assessment – including significance and determining controls – clause 4.3.1
Processes needed to address risks and opportunities – clause 6.1.1 N/A
Methodology and criteria for assessment of OHS risks – clause 6.1.2 N/A
OHS objectives and plans – clause 6.2.2 OHS Objectives and Program- s – clause 4.3.3, 4.4.4
Communication – clause 7.4 Communication from External Parties – clause
Operational controls – clause 8.1.1 Operational Control Procedures – clause 4.4.6
Emergency preparedness and response process – clause 8.2
N/A OHSMS Elements  their Interaction – clause 4.4.4
Applicable legal and other requirements – clause 6.1.3 Legal requirements – clauses 4.3.2
Records of training, skills, experience and qualifications – clause 7.2 Competence, Awareness  Training Records – clause 4.4.2
Monitoring and measurement results – clause 9.1.1 Monitoring Performance Information – clause 4.5.1
Calibration and verification of monitoring and measuring equipment – clause 9.1.1 Calibration Records – clause 4.5.1
Evaluation of compliance obligations – clause 9.1.2 Evaluation of Compliance Records – clauses,
Internal audit program – clause 9.2.2 Internal Audit Records – clause 4.5.5
Results of internal audits – clause 9.2.2 Internal Audit Records – clause 4.5.5
Results of the management review – clause 9.3 Management Review Records – clause 4.6
Incidents and nonconformities – clause 10.1 Nonconformity  – clause 4.5.3
Results of corrective actions – clause 10.1 Corrective  Preventive Action Records – clause 4.5.3

Where, OHS is “Occupational Health Safety” and OHSMS is “Occupation Health and Safety Management System”.

With the help of above comparison matrix for mandatory documents, professionals can understand where they need to work from inception and where transformation is required. Organizations which are going to implement ISO 45001:2018 first time without any prior implementation of OHSAS 18001 can relate to the first column of ISO 45001 list of mandatory documents for assistance.

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