I've worked a couple places like this and the real argument is "thanksgiving in the USA is always a thursday which is unfair to the wed-sat team" if they're for

I've worked a couple places like this and the real argument is "thanksgiving in the USA is always a thursday which is unfair to the wed-sat team" if they're forced to work or "unfair to the sun-wed team" if they wanted to work for triple overtime holiday pay and similar arguments about election day always being a Tuesday there are five federal holidays IIRC that are off on Mondays but no federal holidays on fri or sat, etc. Usually whining problems were solved by "this system has been here since your grandparents and you signed up for it so suck it up or transfer teams or quit" Technically the system was only there for their grandparents in operations and finance always worked 9-5 m-f until thirty years ago so it is new out of operations, but whatever. The vacation problem was solved by providing "weeks" to everyone along with the interesting legal fiction that everyone worked ten hours so our "weeks" were implemented using "hours". So new employees got "two weeks" which on paper were implemented as 80 hours. These are all very old issues in 24x7 operations environments including outside IT/tech/computer-stuff. The only "innovation" is when the payroll clerk starts doing 4x10s like she's a front line nurse, or the graphics artist in marketing starts doing 4x10s 3rd shift like he's a field service tech.