N.C. Gen. Stat. § 150B-27
After the commencement of a contested case, subpoenas may be issued and served in accordance with G.S. 1A-1, Rule 45. In addition to the methods of service in G.S. 1A-1, Rule 45, a State law enforcement officer may serve a subpoena on behalf of an agency that is a party to the contested case by any method by which a sheriff may serve a subpoena under that Rule. Upon a motion, the administrative law judge may quash a subpoena if, upon a hearing, the administrative law judge finds that the evidence the production of which is required does not relate to a matter in issue, the subpoena does not describe with sufficient particularity the evidence the production of which is required, or for any other reason sufficient in law the subpoena may be quashed.
Witness fees shall be paid by the party requesting the subpoena to subpoenaed witnesses in accordance with G.S. 7A-314. However, State officials or employees who are subpoenaed shall not be entitled to witness fees, but they shall receive their normal salary and they shall not be required to take any annual leave for the witness days. Travel expenses of State officials or employees who are subpoenaed shall be reimbursed as provided in G.S. 138-6.
N.C. Gen. Stat. § 150B-27