If you are not chosen to serve on a jury on the day you report, you will not have to return a second day. You may, however, be required to report for a second day, even if you are not serving on a trial. This does not occur often. If the jury selection is lengthy due to the nature of the case, or if unforeseen circumstances arise, the court may require jurors to return a second day. If you are selected as a juror, you will serve until the trial is concluded.
Typical cases are two or three days including the jury selection day.
The trial will begin immediately after the jury selection. Pennsylvania law does not require an employer to compensate an employee for jury service. Check with your employer for their policy. Pennsylvania law provides that you are entitled to receive per diem compensation even if you are not selected to serve on a jury. The mileage is based on the zip code of your home address.