Article 4. Witnesses of California Public Utilities Code >> Division 1. >> Part 1. >> Chapter 9. >> Article 4.

Each witness who appears by order of the commission or a commissioner shall receive for his attendance the same fees and mileage allowed by law to a witness in civil cases, which shall be paid by the party at whose request the witness is subpenaed. When any witness who has not been required to attend at the request of any party is subpenaed by the commission, his fees and mileage shall be paid from the funds appropriated for the use of the commission in the same manner as other expenses of the commission are paid. Any witness subpenaed except one whose fees and mileage may be paid from the funds of the commission, may, at the time of service, demand the fee to which he is entitled for travel to and from the place at which he is required to appear, and one day's attendance. If such witness demands such fees at the time of service, and they are not at that time paid or tendered, he shall not be required to appear. All fees or mileage to which any witness is entitled under the provisions of this section may be collected by action therefor instituted by the person to whom such fees are payable. No witness furnished with free transportation shall receive mileage for the distance he may have traveled on such free transportation.
In case of the refusal of any witness to attend or testify or produce any papers required by a subpena issued by the commission or any commissioner, the commission or the commissioner may file, in the superior court in and for the county, or city and county, in which the proceedings is pending, a petition, setting forth that due notice has been given of the time and place of attendance of the witness, or the production of the papers, and that the witness has been summoned in the manner prescribed in this part and has failed and refused to attend or produce the papers required by the subpena, or has refused to answer questions propounded to him in the course of the proceeding. The petition shall include a request for an order of the court, compelling the witness to attend and testify or produce the papers before the commission.
Upon the filing of the petition the court shall enter an order directing the witness to appear before the court at a time and place fixed in the order and show cause why he has not attended and testified or produced said papers before the commission. The time fixed shall not be more than 10 days from the date of the order. A copy of the order shall be served upon the witness. If it appears to the court that the subpena was regularly issued by the commission or a commissioner, the court shall thereupon enter an order that the witness appear before the commission or commissioner at the time and place fixed in the order, and testify or produce the required papers, and upon failure to obey the order, the witness shall be dealt with as for contempt of court. The remedy provided in this section is cumulative, and shall not be construed to impair or interfere with the power of the commission or a commissioner to enforce the attendance of witnesses and the production of papers, and to punish for contempt in the same manner and to the same extent as courts of record.
The commission or any commissioner or any party may, in any investigation or hearing before the commission, cause the deposition of witnesses residing within or without the state to be taken in the manner prescribed by law for like depositions in civil actions in the superior courts of this state under Title 4 (commencing with Section 2016.010) of Part 4 of the Code of Civil Procedure and to that end may compel the attendance of witnesses and the production of books, waybills, documents, papers, and accounts.
No person shall be excused from testifying or from producing any book, waybill, document, paper, or account in any investigation or inquiry by or hearing before the commission or any commissioner, when ordered to do so, upon the ground that the testimony or evidence, book, waybill, document, paper, or account required of him may tend to incriminate him or subject him to penalty or forfeiture, but no person shall be prosecuted, punished, or subjected to any penalty or forfeiture for or on account of any act, transaction, matter or thing concerning which, under oath, he has testified or produced documentary evidence, but no person so testifying shall be exempt from prosecution or punishment for any perjury committed by him in his testimony. Nothing herein contained shall be construed as in any manner giving to any public utility immunity of any kind.