When it comes to asphalt pavers , every contractor faces O and O cost of their equipment . There is Owning costs which is the purchase price of the machine plus financing plus taxes minus the disposal price ( what you get for that machine when you resell it ). And there are Operating costs which equals labor plus fuel plus maintenance plus replacement costs of tires , tracks and other components plus overhead . Add the owning to the operating costs and you have your O & O costs .