This paper analyzes the welfare effects of a public smoking ban in bars. We construct a model that captures crucial features of bar life: competing bars, social interaction, and heterogenous preferences for a smoking ban. Smokers and non-smokers simultaneously choose a bar given their...

This paper analyzes single-till and dual-till regulations in terms of social welfare. We clarify two conditions to determine which regulation yields a higher welfare. The first condition is whether the solutions under welfare maximization yield positive or negative regulatory profits. The second...