I've worked a little bit in a hospital. Some of the items I have seen that would impact time, most of them mentioned above:
1. Getting badges. This usually entails the foreman going to the office, arranging a time, then returning to the job, then returning with the employee needing the badge, getting turned away 'cause Francine called in sick today...
2. Parking. There was a rule from the GC that only marked company vehicles could be parked onsite. All the trades wound up parking up and down the street, between one and two blocks away.
3. Conduit running between an existing panel to a new panel through an operating room. Nothing like electricians dressing up like doctors on a Sunday in between operations, knowing they have been "promised" five hours of downtime. If an emergency came along, you are expected to vacate immediately.
4. Critical loads. Can you shut that panel off while you're making your changes? Does the work have to be completed live? I've heard "bomb squad-esque" tales of electricians wedging under service gear making changeovers hot, with an EMT hovering nearby because the hospital can't have a shutdown.
It's hard to say what you should ask about without any details.