National legislation designed to protect working children was passed in 1938. The Fair Labor Standards Act (FLSA) regulates the use of child labor in non-agricultural industries. This law limits the age workers to sixteen and over, and if the job is dangerous, to 18 and over. It provides guidelines for the types of jobs 14 and 15-year-olds can perform, and requires employers to pay child workers at least minimum wage. The law also states that 14- and 15-year-olds may work outside of school hours for a maximum of 3 hours per day and 18 hours per week when school is in session and a maximum of 8 hours per day and 40 hours per week when school is not in session. This group is prohibited from working before 7 a.m. and after 7 p.m., except during summers, when they may work until 9 p.m. A 1997 investigation by the Associated Press found that “close to 4 percent of all 12 to 17-year-olds in any given week ere employed illegally.” The investigation further found that 290,200 children were employed unlawfully in 1996, including close to 60,000 under the age of 14 and 13,000 children who were working in factories that had repeated labor violations.