An Illinois Subpoena-People's for Witness is a legal document issued by a court in Illinois that requires the attendance of a witness at a trial or other court proceeding. It contains the name of the witness, the date, time, and place of the hearing, and an order from the court to appear. There are two types of Illinois Subpoena-People's for Witness: a Subpoena Ducks Cecum, which requires a witness to bring documents or other physical evidence to the hearing, and a Subpoena Ad Testificandum, which requires a witness to appear as a witness and answer questions. Both types of Subpoena-People's for Witness must be properly served and the witness must be given a reasonable amount of time to prepare for the hearing. Failure to comply with an Illinois Subpoena-People's for Witness may result in criminal penalties.