The role of context in expatriation research Why do we need expatriation? Who are expatriates? What are their experiences? Who benefits? What are the challenges of international work? For decades, the literature on international mobility has concentrated on these and related issues. This special-issue introduction provides an overview of pertinent research insights, relevant current questions and promising future areas of investigation on the micro (individual), meso (organizational) and macro (society/context) levels. In particular, it presents the contributions included in this special issue, highlighting the highly diverse contexts in which self-initiated expatriates' (SIEs) careers are launched and unfold over time.An expatriate is defined as "an individual who moves to another country while changing the dominant place of residence and executes legal work abroad" (Andresen et al., 2014(Andresen et al., , p. 2308, with the relocation being initiated either by an organization (assigned expatriates) or the individual (SIEs) (Andresen et al., 2014). Both could be characterized as migrants, often highly qualified, who travel, study, learn, work and may even retire in different countries and cultures (Andresen et al., 2014;Biemann and Andresen, 2010;Guo and Al Ariss, 2015). Overall, there is also the encompassing notion of global mobility in the management literature integrating various forms of expatriation (Bonache et al., 2021). Following Perlmutter's (1969) exploration of the tortuous evolution of the multinational corporation (MNC), he and Heenan (Perlmutter and Heenan, 1974) observed and proposed staffing solutions for managerial leadership jobs at international subsidiaries. Their work focused on corporate (assigned) expatriates sent abroad for specific positions or work missions, often by an MNC. Thus, their focus was highly intra-company and context-specific, as it helped understand the organizational drivers of expatriation (meso level). SIEs have attracted more recent attention in management research (