In contract law, a person may sue for damages when he/she does not receive payment in exchange for services provided. If there is no contract, the court may resort to equitable remedies to compensate for an unjust enrichment. In estate litigation, in the absence of a contract, the courts sometimes impose a constructive trust on real or personal property of the estate for failure to provide for that person in the Will. The purpose is to prevent the estate from taking advantage and being unjustly enriched. Alternatively, the courts attempts to prevent the unjust enrichment of the estate by putting the claimant back in the position he would have been had he not provided the services by making the estate pay the claimant the value of those services.