As demand increases for expatriates to manage far-fl ung operations in a global economy, scholars and practitioners are focusing their attention on the factors that contribute to expatriate success. One such factor is the support that expatriates receive from host country nationals (HCNs) with whom they work. Researchers interested in understanding expatriate success have not closely examined the phenomenon from an HCN perspective, however. At the same time, although we have gained a signifi cant understanding of the roles of psychological, organizational, and contextual variables in the international assignment, there is still much to be understood about how expatriates' demographic characteristics affect their experiences in international assignments. Current fi ndings regarding the effects of demographic characteristics often are inconsistent, highlighting the need for more complex theorizing. This article reviews recent research on the effects of expatriate demographic characteristics and proposes a social identity approach to understanding how these characteristics affect HCN support for the expatriate. It also seeks to develop a theory that addresses discrepancies in extant empirical fi ndings, provides propositions to guide future research in the study of expatriates, and discusses implications for both researchers and practitioners.Expatriates are "employees of business organizations, who are sent [to another country] on a temporary basis to complete a time-based task Few researchers … have examined how HCNs might contribute to adjustment or the factors that determine HCN support for an expatriate.