Book excerpt: This book aims to provide a deeper understanding of the concept and negative outcomes of employee loyalty, considering employees in organizations and OB theory, and comparing employee experiences across both European and East Asian cultures. Through an international analysis of employee loyalty within the service industry, the author highlights the importance of this highly relevant but often overlooked topic to addressing practical issues such as conflict solution, employee retention, service mentality, and work effort. Building on a clear definition and evaluation of the concept of employee loyalty, this book explores meaningful theoretical and practical implications of employee views of the organization, working group, and supervisor.