The law limits the number of hours that minors under 18 may work when school is in session. You will need working papers if you are under 18 years old.Working papers are divided into two age groups (14-15 and 16-17). An Employment Certificate (Working Paper) is required for all minors under 18 years of age who are employed. All minors between the ages of 1417 must provide "working papers" prior to their first day of work. New York requires that employers obtain a work permit for minors. Wages. Minors as young as 14 years old can work in New York, but with restrictions. For example, minors aged 14 and 15 can work limited hours outside of school hours. However, employers of minors under age 18 must obtain and keep on file proof of the minor's age. 16-17 year olds may now work a maximum of 28 hours per week during school and only between the hours of 6 am to 10 pm when school is open for instruction.