Please let me know if you have any experience with integrating ISO 14001 & 9001 into OHSAS. I have heard about all the positive reasons to do this: save time & money, more efficient auditing, etc. What is the down side of integrating these three management systems?
Organizations already are run by their systems. Of course, we should not add another system or three! Instead we analyze our system to understand it and list its key processes for further analysis/design, documentation, use and improvement.
One benefit of the proliferating system standards is their differences. From these differences we can learn, for example, adopting the risk assessment requirements from 14001 and 18001 to improve risk assessment for preventing nonconformity generally. Other examples would be the wider application of employee consultation requirements of 18001 and the wider deployment of legal and regulatory requirements to the management system.
Perhaps quality professionals are really systems professionals and our colleagues in health, safety, environmental and security are scared of us taking their jobs?

It promises a management system truly integrated with the company's financial controls and plenty of job security!
I learned systems thinking putting together and managing EHS programs for little companies like Lockheed and ITT. You had to do PDCA or risk failure, and failure meant injured/dead people or a damaged environment.



