This study proposed a new perspective to look at the consequences of the formation of immigrant communities in globalized societies, by investigating the impact of two forms of group indispensability on majority attitudes towards immigrants. Specifically, it explored whether perceived indispensability of different immigrant groups to the national identity and their contributions to the functioning of the host society are related to the development of more positive attitudes towards them. We also explored whether such effects would be mediated by the inclusion of immigrants within the national common identity and whether these effects would be stronger among host country members with a stronger civic than ethnic conception of national citizenship. Results supported these predictions among a sample of native Portuguese citizens (N = 118). As predicted, these effects were driven by perceptions of different types of indispensability for three immigrant groups in Portugal, who differed in their historical relations with the host society.'U.S. desperately needs immigrants and a strategy to get the right ones '-(Forbes, 2012) In 2013, the International Organization for Migration (2013) showed that the number of international migrants worldwide reached 232 million and argued that as globalization increased, migration became one of the key challenges of the 21st century (International Organization for Migration, 2013). There is some consensus that globalization (and its consequent changes in global production, innovation and technology) is a significant force increasing the demand for the international movement of workers. Indeed, world migration trends are changing, and new immigrant communities are becoming increasingly diverse and fluid, as people move with greater frequency over greater distances. These changes in migration patterns are found in several European countries that traditionally have been culturally and ethnically homogeneous. With globalization, these countries (e. g., Italy, Germany) are becoming increasingly diverse. This increased diversity poses several challenges to host societies, including how to successfully integrate culturally, linguistically, and religiously diverse migrants into the host society, and how to address questions about their rights to citizenship.Social psychological research shows variability in reactions to the increased flow of people from foreign cultures, depending upon, for example, a citizen's political ideology (Schwartz, Vignoles, Brown, & Zagefka, 2014), the perceived threat to the national identity (Louis, Esses, & Lalonde, 2013), and the degree of perceived competition for resources posed by immigrants (Esses, Brochu, & Dickson, 2012). Furthermore, research about the consequences of integrating immigrant communities has focused on either (i) the perspective of immigrants, such as how acculturation orientations relate to their psychological well-being (e.g., Celenk & van de Vijver, 2014), or (ii) the perspective of the host society, such as their perceptions ...