The complaint alleges that a 13-year-old worked up to 50-60 hours a week on the assembly line of a Hyundai supplier in the city of Luverne. The factory there produces parts, including body panels, that go onto SUVs built at Hyundai’s plant an hour away in Montgomery.

An investigation by Wage and Hour that found a 13-year-old worked between 50 and 60 hours a week operating machines.

A 13-year-old girl—referred to as “EC”—was employed by SMART Alabama, an auto parts supplier previously owned by Hyundai, at a manufacturing plant in Luverne, Alabama, after they were hired through the staffing firm Best Practice Service (BPS), the Labor Department claims in a lawsuit.