My local council here in the UK moved to a 4 day work week (with the same pay). Counterintuitively they've ended up saving £500k a year because they hire far fewer agency staff.
Productivity has remained the same or increased in all bar one metric and staff retention is much higher.
Of course our halfwitted government has said they're not allowed to do that because it apparently provides poor value for the tax payer. I despair...
My understanding is that Magic Survival is the original source of inspiration for VS. Released in 2019, no less.