This book serves as an essential guide to understanding and effectively managing multiculturalism and diversity in the workplace. The book discusses the growing trend of hiring foreign workers by companies and the need to appropriately manage a diverse workforce. It addresses the research gap in the existing literature, which lacks detailed quantitative analyses on the employment of immigrants in business entities operating in Poland. By conducting an extensive survey of enterprises in Poland, the United Kingdom and the United Arab Emirates, the book provides a comprehensive analysis of managing employees in a multicultural work environment. It offers practical recommendations for improving employee motivation and performance while also contributing to the theory of management and quality sciences. This book is a valuable resource for anyone interested in managing a diverse workforce, and it provides a deeper understanding of the complex issues involved in managing foreign workers in a multicultural work environment.