There are a couple of graduate students who feel the need to make sure that I know how many hours they spend in the lab. First of all, I don't care how much time these people do or do not spend in the lab because:
(1) it's not my job
My job as a post-doctoral fellow is not too police how much or little graduate students work. I think that my job (right this minute) entails (a) conducting research, publishing papers, obtaining funding and acquiring skills that will assist in obtaining a tenure-track faculty position; (b) mentoring my little grad student with stinky breath, (c) acting as a sounding board for new ideas and troubleshooting for any lab member, (d) editing grants and other written items for my Magnum, PI and (e) random lab shit. I'm sure I've left something out, but you get the idea.
(2) it's really more about the quality and quantity of data you produce.
It's all about the data. As long as you are producing data at a reasonable pace and publishing papers, all is well. If you can do that working 3 hours a day, great. If it takes you ten hours a day, fine. I really don't care.
(3) it's not my lab.
I have no authority to reprimand someone if they choose to do nothing or not come to the lab.
And now for the point of this post:
I've started getting to the lab about an hour and a half earlier than what I used to as my child likes to get up at the crack of ass. Since this time, I've noticed that the people in my lab that were always talking about how they got to the lab by 6:00 a.m. NEVER get here by 6:00 a.m. In fact, it's more like 8:00 a.m. Maybe it's a coincidence. The same thing happened in grad. lab. There was one fellow grad student who whined endlessly about how they never could sleep in and were always in the lab by 5:30 or 6:00 a.m. Low and behold, when I start getting to work by 8:00 a.m. do to a schedule change, their sleeping problems suddenly vanished.
Like I said, I don't give a flying fuck when these people get to work, when they leave work or what they do while they are at work. I'm just surprised that people regularly take the time to lie about this shit.