Light 'em up!
Yes. If they wanted people to start at 22:01, they would have scheduled them at 22:01, not 22:00.
Because the union gets all the discipline tossed out.
They cannot single out the part timers and not the full timers. That is called discrimination. I would love to take that on, but our local management knows better.
They pay them their guarantee even if they are late.