We examine whether and how mandatory climate reporting leads to changes in firms’ carbon emissions. Drawing on legitimacy theory and using a difference-in-differences design, we assess the effect of the Greenhouse Gas Reporting Program (GHGRP), introduced by the Environmental Protection Agency (EPA) in 2010, on the carbon performance defined as carbon intensity and absolute carbon emissions of affected firms. We find that firms affected by the GHGRP improve their carbon intensity significantly more than unaffected firms after the introduction of the GHGRP, but not their absolute carbon emissions. The results are robust to changes in the difference-in-differences design. Overall, our study contributes to research on mandatory climate reporting by assessing the GHGRP’s suitability to generate a real sustainable change in firms’ operations and reduce their negative impact on our climate.

Joining voluntary thematic initiatives can be a means for firms to legitimate their business activities. However, a lack of review mechanisms could create incentives for free-riding. This might lead to a lower commitment to the initiative’s principles, and endanger its credibility and its members’ legitimacy benefits. Whether members of voluntary initiatives take advantage of the opportunity to free-ride has not been analyzed empirically so far. To fill this research gap, we investigate from an institutional theory perspective the actual implementation behavior of publicly listed signatories of the United Nations Principles for Responsible Investment (UN PRI) in a difference-in-differences and an event study setting. Our empirical results show that, after signing, UN PRI signatories integrate environmental, social, and governance (ESG) criteria in their business activities significantly more than matched non-signatories from the financial sector, indicating the commitment of the signatories to the UN PRI in general. However, while the initial members show a high commitment to the initiative’s principles by increasing their ESG integration performance substantially, new members signing at a later stage of the initiative perform considerably less, and thus undermine the UN PRI’s credibility. We derive implications for voluntary thematic initiatives to avoid such a development.

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This research examines spillover effects of tax avoidance on peers' firm value using the setting of the European Commission's state aid investigations of private letter rulings. We assume that news about a firm's tax avoidance strategies also reveals information about peers' tax avoidance because investors expect similar firms to use similar strategies. Based on an event study design, we show that news about potential costs of tax avoidance of targeted U.S. multinational firms leads to negative stock price reactions among their peers. Moreover, peers' investors adjust their evaluations upwards for news in favor of the targeted firms. Consistent with the level of tax avoidance being indicative of having similar strategies, spillover effects are stronger for firms with the highest levels of tax avoidance when examining a broad set of peers. Our findings suggest the need for a more comprehensive understanding of the costs and benefits of tax avoidance.

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