This instruction is intended for use in upgrading your Management System for the transition from OHSAS 18001:2007 to ISO 45001:2018 for OH&S management systems (OHSMS) used in all types of industries. The above OHSMS are compatible with each other and have common requirements. In ISO 45001:2018, the requirements are described in: Clause 4 Context of the organization Clause 5 Leadership and worker participation Clause 6 Planning Clause 7 Support Clause 8 Operation Clause 9 Performance evaluation Clause 10 Improvement Previously in OHSAS 18001:2007, the requirements were described in: Clause 4.1 General requirements Clause 4.2 OH&S policy Clause 4.3 Planning Clause 4.4 Implementation and operation Clause 4.5 Checking Clause 4.6 Management review You have the OHSAS-2007 version in place and now have the objective of upgrading the system to the ISO- 2018 version. The good news is that since you are familiar with formal management systems, this initiative will be relatively straightforward.