Oregon Revised Statutes Procedure in Criminal Matters Generally § 136.617

In any criminal proceeding before a court of record or in any proceeding before a grand jury, or in any proceeding before a court of record under ORS 646.760, or in any proceeding for the imposition of remedial or punitive sanction for contempt, if a witness refuses to testify or produce evidence of any kind on the ground that the witness may be incriminated thereby, the prosecuting attorney may move the court to order the witness to testify or produce evidence. The court shall forthwith hold a summary hearing at which the prosecuting attorney shall show reasonable cause to believe the witness possesses knowledge relevant to the proceeding, or that no privilege protects the evidence sought to be produced. The witness may show cause why the witness should not be compelled to testify or produce evidence. The court shall order the witness to testify regarding the subject matter under inquiry upon such showing of reasonable cause or shall order the production of evidence upon a finding that no privilege protects the evidence sought, unless the court finds that to do so would be clearly contrary to the public interest. The court shall hold the summary hearing outside the presence of the jury and the public and may require the prosecuting attorney to disclose the purpose of the testimony or evidence. The witness shall be entitled to be represented by counsel at the summary hearing.