Tex. Labor Code § 101.114: FEE RECEIPT REQUIRED.

A labor organizer or an officer, agent, or member of a labor union may not collect a fee, dues, or other sum in connection with membership in a labor union from a person without giving the person at that time a receipt that:

(1) is signed by the labor organizer, officer, agent, or member; and

(2) states that the sum of money received is to be:

(A) delivered to the labor union; and

(B) held intact until the person has been elected and has become a bona fide voting member of the union.

Acts 1993, 73rd Leg., ch. 269, Sec. 1, eff. Sept. 1, 1993.