As a manager I feel responsible for knowing this at all times. I don't want to be sold to. Just give me consistent work at the expected quality at whatever pace you can sustain.
Perhaps I'm fooling myself, but I think I can definitely tell when people are burning the candle at both ends to compensate for any perceived shortcomings. That doesn't really impress me. In fact, it worries me, as I want consistency and sustainability. Don't burn out or begin making lots of mistakes.
I can't promise this is how all managers think. And there's definitely companies that are perfectly happy for you to work 60 hours when being paid for 40. Either they don't care, or are ignorant of the qualitative cost of that.
I'm very fortunate to work somewhere that gives me a reasonable amount of autonomy for how to ensure my team delivers quality work on-time. One of the main reasons is that the company doesn't MBA us to death by doing things like, "they're on-time! Give them 20% more work next time!"
Perhaps I'm fooling myself, but I think I can definitely tell when people are burning the candle at both ends to compensate for any perceived shortcomings. That doesn't really impress me. In fact, it worries me, as I want consistency and sustainability. Don't burn out or begin making lots of mistakes.