contract of reward is a judicial organization in which the contractor is imposed to pay a wage to the worker. When the worker do the subject of contract, typically anticipate to get his wage .judicial justice also confirm this matter. Unless the worker tend to not get his wage or contact condition prohibits him from getting his wage. Hence legal experts introduce worker intension to release the contractor obligation about his wage, as his gratis to the contractor. In reward contracts, moreover worker gratis, there is contractor gratis and tertiary gratis.as the result we will know that if someone do the offer they will be entitled to get the wage so the contractor intension to not pay the wage isn’t important. But in a case the doer will not be paid, if he does the work without someone desire.