(a) Except as provided by Subsections (b), (c), (e), and (f), no person may employ a person under 18 years of age to sell, prepare, serve, or otherwise handle liquor, or to assist in doing so.
(b) A holder of a wine only package store permit may employ a person 16 years old or older to work in any capacity.

Terms Used In Texas Alcoholic Beverage Code 106.09


(c) A holder of a permit or license providing for the on-premises consumption of alcoholic beverages may employ a person under 18 years of age to work in any capacity other than the actual selling, preparing, or serving of alcoholic beverages.
(d) A person who is 18, 19, or 20 years of age is not prohibited from acting as an agent under Chapter 35, 36, or 73, provided the person may carry out the activities authorized by those chapters only while in the actual course and scope of the person’s employment.
(e) The holder of a permit or license providing for the on-premises consumption of alcoholic beverages who also holds a food and beverage certificate may employ a person under 18 years of age to work as a cashier for transactions involving the sale of alcoholic beverages if the alcoholic beverages are served by a person 18 years of age or older.
(f) The holder of a permit or license providing for the on-premises consumption of alcoholic beverages that derives less than 50 percent of its gross receipts for the premises from the sale or service of alcoholic beverages may employ a person under 18 years of age to work as a cashier for transactions involving the sale of alcoholic beverages if the alcoholic beverages are served by a person 18 years of age or older.