Jurors are randomly selected by computer from driver's license and voter's registration files. Because it is a random selection by the computer, it is not possible to volunteer. Every three years. You are part of a pool of jurors available for trials in Criminal, Civil and Chancery Courts. If you are selected to go to a court and are excused from that case, you return to the Jury Assembly Room to be called on a different case.
Some companies have their own policies concerning jury duty, if so, follow their policy.
Our policy is that if you are released before noon you should return to your job. Basically, as soon as possible. If you are on a case, it is up to the judge. If you are in the pool, you will go to lunch as soon as all courts have sufficient jurors for the morning. At the end of your service, whether you are in the pool or are seated on a jury, you will be given a letter that details the days you serve.