No, the driver's pay may not be docked: the law is clear that an employer's pay may only have deductions or amounts withheld with the employee's consent or agreement, or as required by law (e.g. court or IRS ordered wage garnishment). However, if the employer does not believe the employee or feels he was inefficient, overly slow, may have stopped somewhere, etc., it can reduce his wage going forward; suspend him; reduce his hours; or terminate him. So there are many things the employer can do--it just happens that docking wages is not one of them.