Unpacking sustainability reporting dimensions: the impact of board characteristics

Purpose This paper aims to document international evidence of the impact of a board-level governance bundle size, independence, CEO duality, gender diversity and sustainability committee (SC) on sustainability reporting (SR) and, separately, on its three dimensions (economic, environmental and social). Design/methodology/approach The sample includes 370 listed firms from 50 countries. A GRI standards-based disclosure index was constructed to quantify SR across various reporting media. Findings The baseline findings show that SC positively affects SR and its three dimensions. Board size also has a significant and positive impact on SR and two of its dimensions (economic and social). Similarly, board independence and CEO duality have a significant but negative association with SR and the same two dimensions. Finally, board gender diversity has no significant impact on SR and all its three dimensions. Practical implications The findings that only SC significantly influences SR, and its three dimensions, have important implications for corporate governance reforms internationally to improve SR in countries where such committees are not yet part of the board of directors’ sub-committees. Originality/value Overall, this study contributes to board characteristics–SR literature and holds significant theoretical and practical implications.