Rules for dealing with night shifters

The following is a sign that hangs on wall of RT Cave:

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Rules for dealing with night shifters:

1. Don't call him before 4 p.m.
2. Don't lecture him about his faults at 4 a.m.
3. Don't call him after he leaves work to tell him he's a screw up.  All this will do is piss him off so he can't sleep, and he'll be even less effective the next night
4. Remember that one error doesn't constitute a crisis
5. Don't tell him he looks or sounds tired, because he is and he does