As was mentioned in the public sector I feel like it was the norm. People liked having their every other Friday off (or other day they chose). When we were always in the office I chose to come in because fridays were quiet and I could work uninterrupted. Now almost all of my employees work a flexible schedule. They send me their schedule prior to the pay period starting. They have the ability to flex and violate the “core hours” one every two weeks (working less than 6 hours and can be outside the 10-2pm period). So for instance my one employee works about 2-4 hours every other Friday and has the other one off, just picks up the slack on some other day. And if they want to adjust their schedule more they just need supervisor approval (haven’t had a time yet where I had to deny a request). I personally stick to a mostly 8-4:30p schedule but if I have a big project coming up I shorten a day and put in extra time another day.