The report covers financial and regulatory aspects confronting the Australian business sector, emphasising on the mining sector of the nation by considering Orica Limited, Rio Tinto, Fortescue Metals Group and BHP Billiton as the four key public listed companies operating in the nation. It sheds light on the need for corporate regulation and voluntary disclosure of information by business managers. The paper has also discussed the reasons that IFRS is not mandatory for all the member countries of IASB.