I have a senior management-technical position with equity and a decent salary in a pre-launch startup with 6 people. I am newly-married and I work about 11 hours a day, 6 days a week, give or take one hour, and I have produced quality output and have been on top of all my personal deadlines assigned to me by our President. I have one person I directly oversee who is making consistent contribution to the projects.
There is a junior team of developers who are working day and night, sometimes staying at office overnight to finish aspects of development that I am not directly involved in and is overseen by the President. The President stays over with them and works on other business matters(he is not a technical person). Over the last few days I am being asked by my President why I am not staying late with them. He is aware that I have finished my work that the immediate deadlines were dependent on. He wants me to stay late so that the morale of the team is high, and so that they respect me. One of the junior members is apparently asking him why I am not staying as late as she is.
I want to know: Am I doing anything wrong? Should I be staying later to keep up appearances of working late? Or am I in the wrong company?
To clarify cultural context : the company is in CA.