The article is devoted to the principle of inclusion in social policy and social services. Based on the category of social theory and empirical evidence, inclusion is presented as a strategic goal of international organizations, state social policy, as well as a characteristic of everyday life of any social service. Inclusion is formed in the professional activity within specific organizations and, in a wider context, in the course of reform of social policy, with the change of values and needs of the population. At the organizational level inclusion is presented in three aspects: official measures, professional practice, and culture manifested in the interactions of the participants of an inclusive process, their relationship, shared values and attitudes. It is shown that an inclusive culture becomes embedded within an organization when all professionals share the values of 176 Социологические исследования № 12, 2015 respect for human rights and diversity, participation, mutual learning and dialogue with clients. Based on materials from interviews with social work specialists, inclusion of migrants is studied in the context of professional organizational culture. Necessity to take into account inclusion as a parameter in evaluating social services is argued for.