It is illegal to employ a child under 14 except under specific circumstances. Texas' child labor laws apply to all children under the age of 18 working in Texas, whether or not they reside in the state.Yes, youth are entitled to minimum wage and overtime pay in Texas. However, employers of minors under age 18 must obtain and keep on file proof of the minor's age. In Texas, older minors—meaning 16- and 17-year-olds—may work as many hours as they'd like. (1) A child who is at least 14 years of age may apply to the Texas Workforce. Commission for a certificate of age. Ages 16 and 17: Any "nonhazardous" work for unlimited hours. • Age 18 and older: Any job, whether "hazardous" or not, for unlimited hours. As used in the law, the term child means an individual under 18 years of age. Exemptions.