I'd second this. All the responses to the contrary seem to be about >40 increase, but there aren't many chance to take a 20% (30%, realistically) pay-cut and wo

I'd second this. All the responses to the contrary seem to be about >40 increase, but there aren't many chance to take a 20% (30%, realistically) pay-cut and work 4 day weeks. Partly I think that's an efficiency thing - if you're critical path on a task, having you available when everyone else is becomes worth a large multiple of your salary. Partly I suspect it's just about not opening the floodgates, where people either resent you or take the same deal. I wonder what the real cut would be, though? For work like software where adding shifts can't be done cleanly, you risk all kinds of major benefit, payroll-tax, and hardware/facilities costs. Still, there have to be programmers willing to take a 50% pay cut for a 33% hour cut. (There's an essay somewhere for programmers about how to ask a manager for this, which is full of notes on how they'll be confused and try to reject it without considering it.)