[Porsche-O-Phile]

Are you stamping them?

Probably not.

If not, you have something in your court to show that you are not certifying that the drawings are being prepared as instruments of professional service under your responsible control. So any attempt to implicate you LEGALLY for any E&O on them is questionable at best and could probably be contested pretty easily. HOWEVER, I understand that this has to be irritating and probably you're more concerned with damage to reputation and having to field all the "WTF is this" phone calls.

If the guy is on my staff, I would tell him point blank if he's putting my initials or name in the title block (under "checked by" or "prepared by" or whatever, not "drafted by" or "drafter") then the drawings need to be submitted directly to me in advance of any deadline to be reviewed/QC-ed prior to any issuance to a third party (client, AHJ, whatever). First time he does this, red mark the shat out of it and kick it back to him. I guarantee his work will improve as it will "call him out" on his sloppiness. The obvious downside is it creates more work for you.

If the guy is NOT on my staff, I'd have a conversation with his manager immediately about this - bring several specific examples of sheets with errors/omissions along (highlight the mistakes) and demand that either he or someone on his staff QC this stuff better and certainly NOT use my name/initials on the sheets. If they insist that you have your name on the sheets for whatever reason (maybe you're the only licensed guy in the office?) then as a matter of professionalism you absolutely NEED to review those drawings before they go out - their production schedules need to build in necessary time to accommodate that - none of this "well, we couldn't wait for you to look at them so we just sent them out". I'd raise hell about it if that's the case.

If you're actually stamping the drawings, you're in a potential world of hurt. I seriously hope that's not the case. Anything stamped by you MUST be produced under your responsible control (that term has a very precise definition, usually in your state's laws governing professional services). Basically if you stamp it, you own it - doesn't matter whose initials are on it.

Best of luck. Don't let this one lie but don't blow it out of proportion either. Defend your reputation and don't let anyone else besmirch it - unintentionally or otherwise. And if possible try to turn it into a positive experience for the drafting guy (yes, red-marking the heck out of a set will cause friction, but he'll learn from it and it'll make him better).