Some researchers stay at their labs until midnight or maybe later. Some of these people enforce their students to do so, but I see that none of them produce more than other people who leave their labs on time.
What makes me post this question is the picture that I've attached with the question. It mainly talks about working in industry, but in my opinion it could be applied to researchers in their labs as well, couldn't it?
I totally agree with this, what do you think? Please tel me if I am wrong and these instructions are not associated with researchers.