People pass walk by a Chipotle Restaurant in Manhattan on September 11, 2015 in New York. Chipotle’s 1,850 restaurants spent September 9, 2015 in a cram effort to hire 4,000 new workers to staff a rapid expansion, as it adds 200 more outlets this year. Built on a pitch of fresh, organic and locally sourced […]

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MASSACHUSETTS — Chipotle agreed to pay a $1.3 million fine for more than 13,000 child labor violations at several of its Massachusetts locations.

The state’s attorney general’s office criticized the company in a statement for “routinely” violating child labor laws between 2015 and 2019 at more than 50 Chipotle locations. Teenagers under 18 years old were forced to work without proper work permits, late into the night and for too many hours per day and week, according to the state.

“Chipotle is a major national restaurant chain that employs thousands of young people across the country and it has a duty to ensure minors are safe working in its restaurants,” Attorney General Maura Healey said in the statement. “We hope these citations send a message to other fast food chains and restaurants that they cannot violate our child labor laws and put young people at risk.”

Chipotle has 62 restaurants in Massachusetts.

The three-year investigation followed a 2016 complaint from a parent telling the office that their kid worked “well past midnight” at one Chipotle location. The office’s findings revealed that the company permitted dozens of 16 and 17-year-old employees to work later than the law allows. Chipotle also allowed children to work more than the state’s nine-hour daily limit and the 48-hour weekly limit.

Chipotle is also accused of violating other Massachusetts labor laws, including failing to provide proper timesheets and failing to pay workers within six days of the end of a pay period, the attorney general’s office said.

Chipotle didn’t immediately respond to CNN Business’ request for comment. The Mexican restaurant chain settled with the state, cooperated with the investigation and is now compliant with state labor laws, according to the attorney general’s office.

In addition to the fine, Chipotle will pay $500,000 for youth programs that will include training and educating young workers about child labor laws.