There IS a JCAHO regulation. I have no ideal of the specifics of it, but I know our hospital only recently started locking up. This started during JCAHO inspection, and continues. We are told it's because of regulations?? I can see in a LTC where you'd want to be locked, but to us it's been a pain in the *&&. Working nights, we have to order out because, of course the cafeteria isn't open. The only open entrances are through the ER and parking deck cross walk, so if we happen to forget to tell the delivery person to come through ER, we don't get to eat. It's also been a big burden for parents trying to come and go. It's also a big pain for smokers and for handicapped persons. I understand locking side entrances, but I feel they could put a guard at the main entrance and leave it open.
Just my 2cents worth