INDIANAPOLIS – The U.S. Department of Labor has recovered $603,953 in back wages for 829 workers after an investigation found an Indianapolis-area vehicle parts manufacturer failed to properly calculate overtime wages.Investigators with the department’s Wage and Hour Division found that Toa (USA) LLC, a major automotive supplier that serves top-tier automotive companies, did not include a non-discretionary attendance bonus for hourly employees when calculating overtime during applicable workweeks, in violation of the overtime provisions of the Fair Labor Standards Act. “When employers pay commissions, differentials, certain bonuses, stipends, or other incentives, they must include them in the calculation of overtime pay,” said Wage