State law also requires employers to have Youth Employment Permits (work permits) on file for all workers under 18. Persons under 14 may not work.There are a few exceptions to this such as working as news carriers, on farms, and in entertainment (with a special permit). Teens under 18 years of age are prohibited from certain dangerous or hazardous occupations, industries, and tasks. If your new hire is age 14-17, he or she must secure a Massachusetts employment permit. If you are under 18 years of age, you must obtain a work permit before starting a new job.¹. All minors must obtain and have filled out the Promise of Employment Form for 14 through 17 year olds before a work permit can be issued. Work certificates are not required for 16 and 17yearolds. The Michigan CA-7 Work Permit is essential for minors aged 16 and 17 seeking employment. It ensures compliance with state and federal labor laws.