ISO 45001 is not just about writing documents, what is really important is having all the necessary processes and records in place for the OHSMS; and be actively using these processes. If you are thinking about certification, the certification body will have some requirements before they will audit your OHSMS after implementation; so, this is also needed for you to know your system is fully implemented. The certification body will expect:
- You use the system for a number of months (often 6) to ensure there are enough records collected to adequately audit.
- You have performed a complete set of internal audits for all your processes, and taken corrective actions where needed.
- You have performed at least 1 full management review of all required management review inputs and taken corrective actions where needed.
This is really what you need to do to say you are fully implemented, and then continue using your system with internal audits and management reviews to maintain.