well in US it is one case only (unless a Grand Jury)
In NY we have what is called Call-Up Jury duty, you call in and if your number doesn’t come up it is time served
The first time I had to show up, they were soliciting blood donations. They didn’t call anyone waiting to donate, then when I was done I had lunch break and was then told I could go home.
The last time I called into for interview 100 people or so, drunk driving case. Almost half went home for general reasons. Was promised it wouldn’t last more than two weeks, I had a business trip in just over two plus, so I said I could sit, figured I was free get it over with.
They started the interviews and based on the questions I figured I was out - knew the neighborhood where it happened, the beach club she was leaving, I knew the husband’s restaurant, my father was law enforcement, insurance background. and other things I can’t remember anymore. Anyway I was basically in a last group of six people, they dismissed so many of the prior, that they asked me no questions and I was first alternate.
Her lawyer was a clown, spending a day arguing the damage to the car she rear ended. It was immaterial as it was admitted contact was made and she left. Witness after witness that seemed to hold no relevance. How the cops treated her, what the kids saw, how she was dressed. Oh, and the mispronunciation of words, or words that don’t exist.
Watched the OJ miniseries, where they mentioned Shapiro defended F. Lee Bailey in a two week Drunk Driving case that was one of the longest in history. Well we beat it. I was able to get off for my trip, but wouldn’t have deliberated anyway. It was so long I got an extra two year deferment for my next call up.