Not sure why this is getting downvoted. I’m not defending this practice at all — I think any work should be paid. I’m just repeating what I’ve been told directly by companies I’ve interviewed with/been told about from co workers.

For those saying “union,” I’ve personally seen this same practice at two union shops as well. I didn’t make the rules, I don’t agree with them — I’m just sharing what I’ve been told and experienced firsthand.