This paper explores and analyses the development of Diversity Management and workforce diversity (in terms of ethnic background) in Swedish large-sized enterprises. Primarily, this paper aims to make the concept of Diversity Management well-known and useful in the managerial practices. The theoretical framework discussion is based on a literature review about culture, diverse workforce and Diversity Management. It includes positive and negative influences of Diversity Management and the theoretical implementation process in general. The authors of this dissertation chose a survey via e-mail questionnaires addressed to 235 companies in Sweden. The results were analysed in details combined with the research questions and the literature as well as with propositions and conjectures of the authors of this paper. The paper concludes with the criticism and authors’ reflections