Only teens 16-17 years old can work overtime. All overtime rules apply for any hours worked over 40 hours in a week.Compensation for minors in the state of Washington depends on the age of the minor. Youth who are 16 or 17 years old may not work before a.m. Also, they may not work later than p.m. To hire anyone under the age of 18 in Washington, there are specific laws and rules employers must follow. If you are 18 years old, you may work at any time in any job. 16 and 17: May work the same hours as those who are 18 years old. 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. Employees younger than 18 years of age are considered child labor and subject to additional regulations. Wash. Rev.