Utah Code § 63A-14-704: Subpoena powers.

(1) For all proceedings authorized by this chapter, the commission may issue a subpoena to:

(a) require the attendance of a witness; or

(b) direct the production of evidence.

(2) The commission shall issue a subpoena under this section:

(a) as required under Section 63A-14-706;

(b) at the direction of the chair, if the chair determines that the testimony or evidence is relevant to the review of a complaint; or

(c) upon a vote of a majority of the commission members.