According to a massive meta-analytical study published in Nature Communications, traditional cultural training plays a surprisingly minimal role in an expatriate’s successful adjustment. The study, which synthesized data from 1,114 primary studies covering 571,260 people (including business expats, international students, and economic migrants), found that cultural differences are not the primary driver of relocation difficulties.
Instead, environmental stressors like discrimination and navigating unfamiliar bureaucratic systems have a much larger negative impact on success.
The Real Driver of Success
The research revealed that social resources, connection, and support are the most critical factors for fitting in and functioning effectively. Most notably for business leaders, a supervisor’s support was found to be one of the strongest and most consistent predictors of an expat’s success. This professional backing proved to be substantially more pivotal than support from the employee’s own compatriots, community, or even their spouse and family. If you want to actually grow as a professional, you have to stop looking exclusively at team drama and start auditing your own brain
Local managers are uniquely positioned to ensure an expat’s success for several reasons:
- Belonging & Legitimacy: Feeling connected and avoiding loneliness are the absolute strongest predictors of adaptation. Direct support from a supervisor signals legitimacy to the rest of the team and fosters a sense of belonging.
- Role and System Clarity: Supervisors can actively eliminate role ambiguity (a major expat stressor), help employees navigate local corporate hurdles, and decode the unwritten rules of the specific workplace.
- Mitigating Discrimination: A supportive supervisor champions workplace inclusion, which directly mitigates perceived discrimination—the single factor most likely to damage an expat’s adaptation.
Actionable Strategies for Business Leaders
Because global mobility success depends on management rather than cultural coursework, organizations should shift their strategies to hold leadership accountable:
- Make Integration a Management Responsibility: Do not just evaluate an expatriate employee on whether they hit their performance or sales targets. Instead, actively measure whether their manager successfully integrated them into the team.
- Train Managers in Supportive Behaviors: Provide local supervisors with targeted training focused on actionable, supportive behaviors. This includes practicing active listening, providing clear role clarification, and intentionally driving social inclusion.
- Intervene Before Performance Dips: Struggles with adaptation can severely damage an employee’s mental well-being. Managers must be trained to spot early signs of stress and intervene proactively, rather than waiting for an employee’s output to decline.
The Bottom Line: The success of a global talent strategy does not depend on how well an expatriate memorizes host-country customs; it depends on how effectively their direct manager supports them.
