4 Tex. Admin. Code § 1.17
Motions for extension of time shall be in writing, filed with the hearings clerk or other staff member primarily responsible for legal support to the administrative law judge for the department, or SOAH, and served on all parties no less than five days prior to the date that the matter is to be heard. Such motions must state the specific grounds upon which the movant seeks such action and reference all prior motions for extension of time filed in the proceeding. The movant shall include a statement that the other party or parties have been contacted and whether they oppose or agree to the motion for extension of time. The movant must also provide a list of suggested future dates for consideration by the administrative law judge. Except for good cause, failure to comply with the provisions of this section may be construed as lack of diligence on the part of the movant and may result in the denial of the motion or other requested relief with prejudice to refiling.
4 Tex. Admin. Code § 1.17