7 Tex. Admin. Code § 9.13
Since contested case procedures are closely modeled upon those used in a court of law, the agency strongly urges but does not require parties to employ attorneys to represent them. A private individual may appear pro se. An officer, partner, or full time employee may represent a corporation, partnership, association, or firm in a hearing before the administrative law judge even if that person is not a licensed attorney, if that person observes proper decorum and the instructions of the administrative law judge. Attorneys who are licensed in other states but not in Texas may represent a client in a contested case hearing with the permission of the administrative law judge.
Source Note:The provisions of this §9.13 adopted to be effective November 28, 1995, 20 TexReg 9407.