Some lab heads do have expectations on times of arrival and departure, frequency and length of lunch and office breaks and strong views on working weekends. A more realistic and common view is that it is not how many hours you are at work that matters, but what you get done. Nevertheless, there will be times you have to be there – lab meetings, seminars, etc. – and when necessary you will have to stay late, start early or work at weekends; research is not a nine-to-five activity.(摘录自《Who wants to be a scientists》)