Common law in Australia is based on inherited English contract law, with legislative changes specific to principles in certain areas and the evolution of the law by the decisions of Australian courts, which differ somewhat from English courts, especially since the 1980s.  This article is an overview of key concepts that refer specifically to Australian statutes and decisions. See Contract Law for very general lessons in contract law. Remember that if there is disagreement about the non-payment of agreed premiums, it will be more difficult to prove what was actually agreed (sometimes years later) if there was no written agreement. It is not possible to award on the basis of modern provisions on company award or agreement, unless the modern public procurement agreement or the company expressly allows it. And while any applicable modern award/business agreement or legal minimum right takes precedence over a common law contract, there are many aspects of the relationship that are not affected by the legislation. . . .