34 Tex. Admin. Code § 33.6
Persons receiving payments from the Teacher Retirement System of Texas may give power of attorney to some person to receive, endorse, and cash their warrants if they are legally competent to give such powers. Such powers of attorney shall be duly notarized and witnessed. A person who is physically unable to sign because of paralysis or injury may be assisted in signing the document, but persons who are not mentally alert, legally competent, and aware of the consequences of their act cannot give such authority. Payments for the benefit of persons who are unconscious or of unsound mind can be made only to the guardian of the estate.
Source Note:The provisions of this §33.6 adopted to be effective January 1, 1976.