An Illinois Subpoena For Deposition is a legal document issued by a court in the State of Illinois that requires a witness to appear at a deposition and testify about facts relating to a civil or criminal case. It is usually issued by the court in response to a motion filed by either the plaintiff or the defendant. Depending on the type of case, there are two different types of Illinois Subpoena For Deposition: a Personal Subpoena For Deposition and a Business Subpoena For Deposition. A Personal Subpoena For Deposition orders the witness to appear in court and testify about facts related to an individual’s personal or private affairs, such as family relationships, medical history, and financial records. A Business Subpoena For Deposition orders the witness to appear in court and testify about facts related to a business’s operations, such as contracts, financial records, and personnel records. In both cases, the witness must appear in court with the required documents or information. If the witness fails to comply with the subpoena, they may be held in contempt of court.