34 Tex. Admin. Code § 67.31
Any motion relating to a pending Proceeding, unless made during a hearing, shall be written and shall set forth the relief sought and the specific reasons and grounds for relief. If based upon matters which do not appear of record, it shall be supported by certified copies of documents relied upon, documents properly authenticated, or, in the case of testimony, sworn affidavits. With the exception of motions for continuance (see § 67.47 of this chapter, relating to postponements or continuances, any motion filed in a Proceeding must be filed and served on the Examiner (or the Executive Director if the Examiner no longer has jurisdiction), and all Parties or their Authorized Representatives not less than three (3) business days before the date of the hearing unless a showing of good cause for not complying with this provision is made.
34 Tex. Admin. Code § 67.31