The proper object of the fiduciary duties of corporate directors and officers is frequently described as the central question in all corporate law. We use the adoption of constituency statutes, which shift the loci of corporate managers' duties from shareholders to a wide range of stakeholders, as a quasi-natural experiment to determine the actual impact of fiduciary duties. We find that though the adoption of constituency statutes has no significant effect on measures of earnings management, it has a robust effect on firms' effective tax rate, which increases in a range between 0.570% and 1.903%. These results are robust in terms of various measures of the firm's effective tax rate. We provide explanations for why fiduciary duties apparently do not influence manager behaviours in relation to shareholders but do affect their behaviours in relation to the taxing authority. We argue that a change to fiduciary duties does not appear to alter the motivation of managers to maximize shareholder welfare
EUROPEAN FINANCIAL MANAGEMENTWe owe special thanks to the Editor-in-Chief Professor John Doukas and two anonymous reviewers for their very timely and helpful feedback that substantially improved the paper. Also, we owe thanks to Hong Fan, Sofia Johan, and the seminar participants at the