Oh lordy-- I feel you, Una! I am one that needs many hours to feel rested (10 is the best, I usually get between 6 and 8, and when allowed to sleep uninterupted after not having 10 hour nights for awhile I will sleep 12-14). I didn't used to be that way, was a minimal sleeper, but I deal with a lot of fatigue with the heart condition and it takes it out of me, even though I'm still not a napper.
My SO works shift work-- currently they work 3 on 4 off, 4 on 3 off and 12 hour shifts. His workplace is sorta between towns, so he has at least a 30 min commute and has to be all prepped and ready to relieve someone before his shift starts. Currently he is working 6 to 6, so he is up at 4:45 to be out the door at 5:15 or so. Then he gets home about 6:45 and is in bed by 8:30. We don't live together but I usually stay over a couple nights a week. His commute used to actually be 15 min longer each way, so it was worse. Currently he has a low maintenance hair and facial hair style, showers at night, lays clothes out the night before, and we cook on the weekends and he eats several types of leftovers most weeks. That said, while he is working the dishes don't get done and all housework stops until the weekend, he usually can't run errands, etc. When we aren't at the same house we don't have an opportunity to talk even. He has no pets and can't although he'd like too because he is gone too long on his work days. It isn't uncommon for him to have to work 6 days straight of 12s, either. As rough as it is on him, I think it is harder on me. I'm not great at ,being settled enough to sleep at 8, but his current place is not set up for 2 that work opposite shifts. The bedroom is small, in the front of the house, and near the front door and the living room and there are a lot of creaks and squeaks and the neighborhood is very quiet so him moving wakes me. So, I'm up at 4:30, and he is usually still up by 6 on weekends. The rest of the year he works graveyard shift (6p to 6a) and comes up for air at 3pm on weekends, but I try to stay up to at least midnight so we get to spend 8 waking hours in common.