Assessing the business case for environmental, social and corporate governance practices in South Africa

[摘要] ENGLISH SUMMARY : Firms, their stakeholders and society at large are increasingly confronted with sustainability-related challenges, such as climate change, the depletion of natural resources, and energy security. In the wake of these challenges, investors have shown increased interest and consideration of pertinent non-financial information during their investment analyses. Responsible investors in particular incorporate environmental (E), social (S) and corporate governance (G) (ESG) aspects in their investment analyses and ownership practices. These investors realise the potential positive and long-term impact of sound ESG risk management on corporate financial performance (CFP). Despite the growing interest in sustainable corporate practices, limited ESG-related research has been conducted in South Africa, with most existing studies focusing specifically on responsible investment practices and corporate governance. Against this background, the primary objective of this study was to assess the business case for ESG practices of selected Johannesburg Stock Exchange (JSE) listed firms over a six-year period, from 2011 to 2016. A combination of convenience and judgement sampling was utilised to draw a sample of 66 companies from six JSE sectors. The study adopted a positivistic research approach. Selected accounting-based (return on assets [ROA] and earnings per share (EPS]) and market-based (earnings yield [EY] and total shareholder return [TSR]) CFP measures were employed. While accounting-based measures are typically used to reflect on short-term CFP, market-based measures provide an indication of investors' perceptions regarding past performance and the future financial prospects of a firm. The study expanded on the work of previous researchers in the emerging market context by including value-based CFP measures (return on invested capital [ROIC], market value added [MVA], the spread, and cash return on invested capital [CROIC]). The required data were sourced from the Bloomberg and IRESS databases. The resulting panel dataset was analysed by means of descriptive and inferential statistics. The descriptive statistics revealed a growing trend in the overall ESG disclosure by the considered firms. When the individual ESG aspects were examined, it was evident that the E- and S-disclosure scores contributed mostly to the overall increase in ESG disclosure. Although an increase in E-disclosure was observed over the study period, it was at a slow pace. The disclosure of social considerations, however, revealed a more notable increase. Corporate governance disclosure remained relatively consistent over the study period. The panel regression analyses conducted between the individual ESG disclosure scores and CFP revealed significant associations for EPS and TSR. A significant negative relationship was found between E-disclosure and EPS. In contrast, a significant positive association was observed between S-disclosure and EPS. When S-disclosure scores were lagged for one-year, the significant relationship persisted. A statistically significant negative relationship emerged between S-disclosure and TSR. Significant relationships were also noted at the sector level between the individual E-, S- and G-disclosure scores and various accounting-based, market-based and value-based CFP measures. Based on the results of this study, the researcher recommends that corporate managers, directors and investors should not only focus on the traditional financial-performance approach, but also incorporate pertinent ESG aspects in their decision-making and investment analyses. Furthermore, corporate managers should acknowledge that ESG risk management forms part of the core business function of firms. Since ESG risks and sustainability concerns often differ among sectors, the JSE could set sector-specific E- and S-targets. Finally, given their ownership rights and responsibilities, more shareholders should engage with companies on ESG concerns, be it in public or in private.

[发布机构] Stellenbosch University