I thought it was something like that. Someday I will perhaps understand why some few auditors believe they have the right to tell you how to run your business.
Seems like some of them come from a planet where all the streets are marked "one way."
Opportunities for improvement aren't binding. There is no real reason to "review" them at the next audit.
Your understanding and rationale are both fine, You shouldn't have to defend them to the auditor. It's a shame he's putting you on the defensive in this way.
Paul's advice is excellent - don't hesitate to complain to the parent company if there are problems.
Cliff, while I agree with the intent of your advice, I think you went a bit far. In today's ISO and TS world, 3rd party auditors are not just doing "compliance audits." We are trained and constrained to push the improvement aspect as well. Unfortunately, it is not always clean and simple. That's why auditors and clients have to work together.
For example, some OFI's that I have written are:
1. Your downtime is rather high, compared to similar companies. (It is their prerogative, but it is my job to inform them.
2. You have few, and basic Quality Objectives. Compliant, but you are not getting the full benefit of the purpose for this requirement.
3. Process XYZ is compliant, but appears rather complex and unncessarily complex. etc...
They don't have to do them, and they may not always agree with them. But, I am not doing my job if I don't point it out. And often, there is a lot of financial benefit in those OFIs, though they may not see it immediately.
Remember, the ISO program is about continual improvement, and
good auditors see more companies in a year than most people get to see in a whole career. Unfortunately, while this tool can be valuable in the hands of a skillful auditor, in the hands of a
rookie, it can be messy and ugly. Also, since communication is not always a particulary effective activity, sometimes the auditor's comments are misconstrued.
For all these reasons, OFIs are not mandatory to implement. But, for an organization that supposedly is "committed to continual improvement," (it's in your Quality Policy, remember?), it is expected that OFIs be considered by the managment team, as to whether they would provide benefit and be feasible. But it remains with the organization to decide whether to do them.
Frankly, I would drop a client that does not have an interest in hearing and considering OFI's. I work too hard to waste time on clients that are not committed to improvement based on the audit process. There are other auditors who can audit them to basics, if that is what they want.