It didn't come without some fight. I made it completely clear in the interview I would not do death marches. I assured them if they needed overtime for a short period to hit a serious deadline I would do that, but I wouldn't death march for weeks on end to fix bad estimates or project management. I wouldn't do it to my team either. There was some friction with middle management, but some things are worth fighting over.
When I moved companies, they accepted that, and as a reward had their most productive and profitable years ever while I was at the helm of their development team.
Now, my examples are small to medium sized companies, working for very large financial companies. YMMV.