While a person is on probation, he is assigned a probation officer to whom he must report. A person who is on probation is also subject to a number of restrictions, that might include a curfew, the requirement to stay in school or at work, or other conditions. Additionally, a person who is on probation is expected to avoid further criminal activity. If someone fails to comply with the conditions of probation, his probation officer has the power to file a Violation of Probation (or VOP) with the Court. In a VOP, the person is usually brought before the judge who originally sentenced him to the probation and formally accused of violating probation.