It depends on what you do, when you're in more of a lead developer/team leader type position you don't only code on your own but have to routinely help/direct o

It depends on what you do, when you're in more of a lead developer/team leader type position you don't only code on your own but have to routinely help/direct other devs all the time & it's easier to slip into working a lot longer (partially it's that you keep getting fresh problems, another part is that you aren't working on these problems alone). I can easily imagine leading even a small-ish team of 5 to 10 other programmers who don't all start and finish the day at the exact same moment (so each may be working 9 hour days but it stretches over a 12 hours period) can make you "naturally" work longer hours if you don't keep an eye out for it.