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This paper investigates whether employees have useful information for assessing firms’ environmental, social, and governance (ESG) practices. I analyze 10.4 million anonymous employee reviews via a word-embedding model to construct an inside view of corporate ESG practices. The inside view has useful information beyond external ratings in predicting a firm’s future misconduct, governance issues, downside risk, growth, and valuation. In addition, the inside view appears robust to greenwashing, both theoretically and empirically. In various settings including a novel exogenous shock, I show that low-cost changes in a firm’s stated ESG policies do not affect the inside view while more expensive changes do.

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