The appointment of an examiner in a chapter 11 case is rare. The role of an examiner is generally more limited than that of a trustee. The examiner is authorized to perform the investigatory functions of the trustee and is required to file a statement of any investigation conducted. If ordered to do so by the court, however, an examiner may carry out any other duties of a trustee that the court orders the debtor in possession not to perform. 11 U.S.C. § 1106. Each court has the authority to determine the duties of an examiner in each particular case. In some cases, the examiner may file a plan of reorganization, negotiate or help the parties negotiate, or review the debtor's schedules to determine whether some of the claims are improperly categorized. Sometimes, the examiner may be directed to determine if objections to any proofs of claim should be filed or whether causes of action have sufficient merit so that further legal action should be taken. The examiner may not subsequently serve as a trustee in the case. 11 U.S.C. § 321.