I received the following question:
2.What are the Key changes between BS OHSAS 18001 and ISO 45001?
The key changes are to meet the Annex SL format of ISO for management systems, which includes new requirements for context of the organization (including identifying internal and external issues and interested parties). The other main highlight of the ISO 45001:2018 requirements is the inclusion of requirements for the consultation and participati on of workers in the OHSMS.
For more details please see the whitepaper, Twelve-step transition process from OHSAS 18001 to ISO 45001, https://info.advisera.com/45001academy/free-download/twelve-step-transition-process-from-ohsas-18001-to-iso-45001