Yes, it's considered a real disorder, and sometimes causes people to fall asleep at work.
It is. I loved doing shift work but I kept falling asleep at work since my shift schedule always changed so much.
Hey there! I just started doing shift work and I really like it. That's good. So you haven't had to deal with insomnia or being too sleepy due to working weird times of the day? No, that sounds awful. I didn't know that was a real thing.
Shift work sleep disorder is also associated with falling asleep at work.