The importance of employee social media policies is recognized in today’s increasingly connected organizations. Yet these policies are adopted at varying rates in different sectors and geographical regions. In the present study, an institutional approach was employed to investigate the predictors of the adoption of employee social media policies by organizations. Six predictors were examined, namely, organizational size, industry, and the national culture dimensions of power distance, individualism, masculinity, and uncertainty avoidance. Results of a logistic regression analysis of 558 online (...) survey responses from human resource professionals worldwide showed that all six predictors were associated with the adoption of employee social media policies. These findings have implications for multinational companies, as well as for policy makers in the legal, human resources, information technologies, and public relations departments who are the primary parties involved in establishing employee social media policies. Study limitations are presented and future research avenues are suggested. (shrink)