That depends. In New Jersey, the penalties for a shoplifting conviction depend upon the value of the merchandise that was stolen. The greater the value of the merchandise, the stiffer the penalty. New Jersey also considers whether you already have a shoplifting conviction -- even if it is a disorderly persons offense. If this is the third time -- or more -- that you have been convicted of shoplifting, New Jersey imposes a mandatory 90-day jail term in addition to whatever other penalties you face.