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. Youth 16 years and older are not limited in the number of hours that they may work except as covered employees under the Fair Labor Standards Act. There are no restrictions on the number of hours per day or days per week for teenagers ages 16 and 17. To work in most states, a teenager must be at least 16 years old. 16 and 17 year olds can work any hours or time of day. 16 - Basic minimum age for employment.