It happens all the time here, guys get switched on a whim based on volume and ease of forced 6th punch. I’ve noticed that our area has a hard on for not messing with the Tues-Sat guy’s Monday; that was a notorious thing for a while and I think it must’ve bit them in the butt cause it never happens now, yet the lowest seniority Mon-Fri guys, who have seniority over most of the sat guys....get forced in sat mornings to run an air route all the time. It’s a really weird game, one of those stupid UPS things.
I got moved to Mon-Fri right before last peak cause they knew they could force me in every Saturday during peak, which they did. Right after in January they went around asking for Tues-Sat volunteers from us lower seniority FT RPCD covers and I signed that bid as soon as I could. It’s worked out well for me so far, have yet to be forced in on a Monday this year