State law and court requirements vary so much. The last time I was called for jury duty, I had to call the day of to find out if I had to report in about 90 minutes. Every day for a whole week. (Yeah, that's so convenient!) I told my TL immediately after receiving the summons and she was cool about it - I called the number when I went to break, felt great relief every time I was told I did not have to report, and kept my TL informed. Ended up not having to go in, but that kind of call-in requirement is part of what makes people grumble about jury duty.