The U.S. Department of Justice is investigating Universal Technical Institute over a former employee's complaint about potential violations of rules prohibiting incentive compensation in student recruiting as well as other potential violations, according to a corporate filing. The for-profit, which specializes in automotive technician training, also disclosed that the same former employee has claimed to have been subjected to retaliation by the company for being a whistleblower. The company said the employee was terminated for performance rather than for any retaliatory reason.