This study investigates factors driving investment in voluntary climate change mitigation among a selection of listed corporations in South Africa. Based on a review of the literature, a proposed conceptual framework is developed and empirically tested using case studies. A qualitative analysis of the data reveals three key motivational drivers: legitimacy, the financial business case and moral responsibility. In addition, a number of sub-drivers are identified which provide insights for engagement with companies in developing South Africa’s response to climate change.