In a public goods experiment with the opportunity to vote to expel members of a group, we found that contributions rose to nearly 100% of endowments with significantly higher efficiency compared with a coexpulsion baseline. Expulsions were strictly of the lowest contributors, and there was an...

Mounting evidence suggests that the outcomes of laboratory public goods games, and collective action in firms, communities, and polities, reflect the presence in most groups of individuals having differing preferences and beliefs. We designed a public goods experiment with targeted punishment...

Direct wage comparisons show that public-sector employees earn around 15% more than private-sector employees. But should these differences be interpreted as a "public-sector premium"? Two points need to be considered. First, the public and private sectors differ in the jobs they offer and the...