Workplace mistreatment is a burgeoning topic of interest, with the majority of workers having experienced it in some form. This book explores workplace ostracism and its negative effects on employee and organizational outcomes, such as employee attitudes, behaviors, and well-being. This edited volume defines workplace ostracism and examines how to differentiate ostracism from other type of workplace mistreatment, such as workplace incivility and interpersonal conflict. Among the questions it seeks to answer are: 1) what are the individual, relational, and contextual factors that influence employees' workplace ostracism experiences; and 2) what constitutes ostracism in stigmatized populations, such as international students, immigrant workers, and older workers. Researchers in organizational behavior, I/O psychology, and the sociology of work will find this book to be a valuable resource.