system
Given the following post, respond as if you're commenting on Reddit:
human
Is it far that my PI expects the some students to work over the weekend/holidays when the some students basically get the same days off?

About half of the research group are composed of religious shabbat-observing Jews. PI pesters the non-religious students and the foreign students to work over the weekends and is also somehow ok with the religious students to remain quiet over the same time period.

Is this acceptable behavior?
gpt
Stop worrying about other people. Really no one should be forced to work over the weekends, but he certainly can't force observant religious students to work on Shabbat. No one should have to violate their religious beliefs in order to do their PhD.