DP totally fell asleep while I was in labour. But he did have an excuse so I forgave him for it (eventually). He does shift work and he'd just come off his final night shift. Literally - he was then scheduled to take 6 weeks annual leave to help me out with the baby.
DS wasn't due for another two weeks anyway.
DP came home at 6am, my waters broke at around 8:30 and he didn't get much of a chance to sleep because I'd been having contractions since 2am, I was whimpering in pain and he's a light sleeper. He fell asleep at some point after the nurses gave me pethidine (the gas, it does nothing!) and told me to try to take a nap. I dozed in and out.
To his credit, he snapped right back to attention when I was told bub was in distress, I wasn't progressing in a timely manner and I'd need an emergency c-section. Then he went into the OR with me, cut the cord, went with DS to the NICU and manned the doors when family stormed the hospital afterwards.
I don't think he got to sleep again until at least 10pm that night - then he was back at the hospital next morning from the beginning of visiting hours.