Boards of Directors That Transform: A Study on How Specific Architectural Components Drive ESG Performance

Abstract

This study explores the potential influence of key components of the board of directors' architecture on ESG outcomes. Specifically, we focus on the effects of demographic components (gender and cultural diversity), structural and compositional factors (size, CEO-Chair separation, and the presence of independent/non-executive directors), and sustainability incentives. We adopt a contextual resource perspective of board architecture, in which demographic diversity provides cognitive resources, structural features shape monitoring capacity, and sustainability incentives serve as a mechanism to align the directors' interests with sustainability. In this vein, we put forward several hypotheses based on various theoretical lenses used as complementary explanations within an overarching view. We test our hypotheses using data from Thomson Reuters (Refinitiv/Eikon) covering the period 2015–2022 across 20 countries. The final sample size varies from 963 to 5237 large, listed firms (i.e., between 2904 and 25,506 firm-year observations). Our main findings are as follows: First, not all board architectural components significantly influence ESG performance, with some components (independent directors) showing weak effects and others (CEO-Chair separation) showing non-significant effects. Second, a firm's ESG performance significantly improves when there is a greater proportion of non-executive directors, increased cultural diversity among board members (by nationality), and board members receiving sustainability incentives. Third, boards should aim for balanced or moderate representation on gender and size rather than extremes. Finally, our research indicates that no single approach can address all architectural issues related to boards, underscoring the need for an overarching view. We outline the key implications of our findings for managers, policymakers, and investors.