Minors 16 years of age or older may work: (1) in all occupations not declared hazardous; and. Utah child labor laws state that minors under 16 are allowed to work with certain restrictions.Minors are defined as anyone 17 years old or younger. Minors cannot work for more than 3 hours without a 10 minute rest period. Minors are also entitled to minimum wage. 16 and 17 year olds that are enrolled in school may not work more than 6 consecutive days or 30 hours per week during the school calendar week. 16 - Basic minimum age for employment. Unlike some states, Utah does not require minors under 18 to obtain a work permit. The legal age to work in Utah is 14. The Department of Safety may issue age certificates to 16 and 17yearolds.