(a) A party that issues or is granted a subpoena shall be responsible for having the subpoena served. The subpoena may be served at any place within the State of Texas by any sheriff or constable of the State of Texas, or any person who is not a party to the case and is 18 years of age or older. A subpoena must be served by delivering a copy to the witness. If the witness is a party and is represented by an attorney of record in the proceeding, the subpoena may be served on the witness’s attorney. A subpoena may also be served by accepted alternative methods established by a peace officer’s law enforcement agency.
(b) A subpoena must be served at least five days before the hearing.
(c) After a subpoena is served upon a witness, the return of service of the subpoena must be filed at SOAH at least three days prior to the hearing. Upon the subpoenaed witness’s appearance at the hearing, the party that issued the subpoena shall tender a witness fee check or money order in the amount of $10 to the witness. In addition, if the witness traveled more than 25 miles round-trip to the hearing from the witness’s office or residence, mileage reimbursement must also be tendered at the same time. The amount of mileage reimbursement will be that listed in the state mileage guide at https://fmx.cpa.state.tx.us/fm/travel/travelrates.php.
(d) If the hearing is conducted telephonically, the party that issued the subpoena shall mail the witness fee check or money order to the witness within one day of the conclusion of the hearing unless the witness fails to appear at the hearing. Also within one day of the conclusion of the hearing, the party shall forward to SOAH a certification that the witness fee or money order was mailed to the witness. A copy of the certification must be sent to the opposing party at the time it is filed at SOAH.
(e) If a party that served a subpoena on a witness fails to appear at a hearing, that party shall mail the witness fee check or money order to the witness within one day from receipt of a default decision or any other order issued by the judge ordering payment of the fee and mileage reimbursement. Also within one day from receipt of the judge’s order, the party shall forward to SOAH a certification that the witness fee or money order was mailed to the witness. A copy of the certification must be sent to the opposing party at the time it is filed at SOAH.
(f) If special equipment will be required in order to offer subpoenaed documents or tangible things, the party seeking their admission shall be required to supply the necessary equipment. The party requesting a subpoena duces tecum may be required to advance the reasonable costs of reproducing the documents or tangible things requested.
(g) Service upon opposing party.
  (1) A party that issues a subpoena must serve the opposing party with a copy of the subpoena on the same date it is issued.
  (2) A party that requests a subpoena from a SOAH judge must serve the opposing party with a copy of the request at the time it is filed with SOAH.
  (3) When a subpoena has been served, and not less than three days prior to the hearing, a party that has served a subpoena must provide the opposing party with a copy of the return of service.
  (4) If a party fails to serve a copy of a subpoena or a subpoena return on the opposing party, the subpoena may be rendered unenforceable by the judge.
(h) Continuing effect. A properly issued subpoena remains in effect until the judge releases the witness or grants a motion to quash or for protective order. If a hearing is rescheduled and a subpoena is extended, and unless the judge specifically directs otherwise, the party that requested the continuance shall promptly notify any subpoenaed witnesses of the new hearing date and serve a copy of the notice on the opposing party.

Source Note: The provisions of this §159.103 adopted to be effective January 20, 2009, 34 TexReg 330; amended to be effective December 10, 2014, 39 TexReg 9515; amended to be effective January 1, 2017, 41 TexReg 9459