This 2nd edition provides a comprehensive, updated review of current knowledge on the adaptive and maladaptive functions of humor. Humor is a pervasive aspect of daily interaction - including in the workplace. Affiliative, self-enhancing, self-deprecating and aggressive humor can all occur at work and have unique and sometimes ambiguous effects. This volume presents research on humor in five important workplace domains: teams, leadership, negotiation, learning, and health. It combines and integrates research from a range of fields, including work and organizational psychology, social psychology, communication, linguistics and sociology. By highlighting research gaps and proposing future research questions, the book provides a solid foundation for further research on humor in the aforementioned areas. For practitioners, the book offers tailored recommendations for each domain.