We examine the impact of differences in time varying social views towards sin stocks across G20 nations on firm valuation and excess returns. Sin stocks have an 8% lower equity valuation in countries where society is strongly against such industries. After controlling for other factors, sin stocks have excess returns of about 1–2% annually. However, these returns are largely arbitraged away in nations without capital and investment controls, but persist in countries with capital restrictions. These results are robust to proxies for litigation risk, transparency, growth opportunities, sin measures, and alternative measures of firm valuation.

We examine the valuation impact of an employee-friendly (EF) culture. Using a sample of 3446 firms from 43 countries for the period 2003 to 2014, we show that firms with a more EF culture are valued higher and perform better (ROA, ROE). Consistent with the good governance view, the impact is stronger for firms in countries with better investor protection and for firms with better governance and lower agency costs. We further document a positive valuation associated with the enactment of laws aimed at improving parental leave policies. The impact on valuation stems from improved technical efficiency. Using various approaches, our results suggest that the impact of an EF culture on firm value is causal.