My uncle worked for a financial services firm in the 80s. A consultant was in a computer room working on something very early in the morning and had a heart attack.
Someone discovered the guy, called 911, and went about their business. Due to some combination of bureaucratic bungling and security nonsense, the ambulance folks didn't know someone had died, and were either turned away from the building or taken to the wrong location in the building.
Long story short, the body wasn't removed until early evening. People thought he was taking a nap. I always found that so sad. The poor guy probably had a family and people who gave a shit about him, but the people around him couldn't be bothered to treat him with respect.