I had three days off from one job last week (still worked the other two---I'd hate to miss or something).
When I came in on Friday, our supervisor looked upset with me, which never happens. She asked something about coming in. I guess a new person was supposed to open Wednesday and Thursday, but got sick on Tuesday. Evening managers said they'd call me and penciled me onto the schedule. Since no one ever did call me, I didn't bother going in. I had no idea.
But when you're the never late, never misses guy, of course, nobody really jumps to accuse you of skipping shifts, but it was a very little bit uncomfortable for a bit there. I checked my phone to see if I missed a call, but that phone was actually pretty active last week.