The chapter examines the legislation of corporate sustainability in South Africa through the introduction of the Social and Ethics Committee under the country’s current Companies Act, 2008. It is argued that this is a board committee of a special kind, with original board powers. Given its far-reaching powers with regard to corporate sustainability matters – including social and economic development, good corporate citizenship, consumer relations to labour and employment, the environment, health and public safety – it is argued that the Social and Ethics Committee should be seen as the second board in companies required to have this structure.