There is no general responsibility in quasi-contract law to pay for services irrespective of the circumstances in which they are carried out. In summary, the court's comprehensive reasoning in "Clark v.Contract Law introduces students to the fundamental principles, theories and arguments in Australian contract law. Best to keep "agreements" to body of contract. Law implies "reasonable time" but best to specify time for performance. In a defendant's contract to repair something, the law implies an undertaking on their part to perform the work in a reasonably skillful and workmanlike manner. Agreements. ▫ Judge should focus on form ("Four Corners Rule"). ▫ Complete integration forces parties to place essential provisions in the written contract. 7 Types of terms within a contract. 109. Conditions and warranties. 109.