Tex. Labor Code § 208.002

(a) When used in connection with an initial claim, "last work" and "person for whom the claimant last worked" refer to the employer, as defined by Subchapter C, Chapter 201, for whom the claimant last worked, unless otherwise provided by state or federal law.

(b) The commission shall mail a notice of the filing of an initial claim to the person for whom the claimant last worked before the effective date of the initial claim. If the person for whom the claimant last worked has more than one branch or division operating at different locations, the commission shall mail the notice to the branch or division at which the claimant last worked.

(c) Mailing of a notice under this section to the correct address of the person, branch, or division for which the claimant last worked constitutes notice of the claim to the person.