Employment Nondiscrimination Acts (ENDAs) have received much political attention in the recent past. Despite the political attention, very little research has investigated the impact of ENDAs. I analyze the impact of ENDAs on labor supplies, which is under-researched in the policy analysis literature. My work is the first to investigate the labor supply patterns of behaviorally gay men using data that are representative of the entire behaviorally gay population. I show that ENDAs motivate behaviorally gay men to work roughly 15–20 h more per week and increase the probability that behaviorally gay men will supply any labor by approximately 7%. These results suggest that ENDAs increase the labor supply of behaviorally gay workers by increasing workplace tolerance of homosexuality. (JEL J2, J7, J1)