No; not all contracts need to be in writing. In some cases, A law made by parliament, either state or Commonwealth. Also called an Act, and Act of parliament or legislation. law requires contracts to be in writing (e.g. contracts to buy and sell land, to buy a car, and door-to-door sales contracts). However, it is always useful to write down the terms agreed to by the parties so that there is less potential for dispute about what was agreed. A written An agreement that the law will enforce. can be drawn up by listing all the terms agreed to by the parties and getting each A person or organisation directly involved in a court case. Parties include the plaintiff or applicant, the defendant, and any third party added to the action, but not independent witnesses. to sign and date the document.
It is useful to keep any documents relating to the agreement (e.g. quotations, invoices and receipts), so that if a dispute does arise, these documents can assist to resolve any differences between the parties.