This book is one of the first attempts to directly explore the relationship between law and acculturation. By exploring the theoretical basis of the concept of culture, the ideas of law and various models of acculturation, it brings a nuanced theorization and problematization of the intricate connection between law and acculturation. It does this through theory and then presents the findings of the author’s qualitative empirical study conducted with a group of long-term Slavic migrants residing in Poland. The book culminates by demonstrating how the law can be integrated into one of the theoretical models of acculturation, specifically the Relative Acculturation Extended Model.