Employers who underpay their employees for the personal use of their vehicles can challenge the amount that has been reimbursed. By using evidence of the employee’s actual costs, workers can show that the reimbursement has been inadequate. If the employer does not correct the discrepancy, workers can file a wage and hour lawsuit. If the employer’s failure or refusal to reimburse workers for travel expenses is a regular practice, workers can file a class-action lawsuit.