In my experience the rotating day off never worked all that well at the several facilities I saw it tried at, if they were open 5 days a week. The way that seemed to work the best was for each person to have one fixed additional day off in addition to the weekend. For the 7 day a week outfits, it didn’t seem to matter whether the third day was fixed or floating.
For those that don’t know, 4x10s have been a common feature of tech-oriented businesses for at least a couple decades now.
-—In my experience the rotating day off never worked all that well at the several facilities I saw it tried at, if they were open 5 days a week——
This was back in the 80’s and we delivered auto-paint/supplies to shops. It worked very well for us.