This article studies how organizational commitment is shaped by individual and macro-level factors. Drawing upon data from the 2015 International Social Survey Program (ISSP) and using multilevel modeling, the article shows that workers have less organizational commitment than employers. The article also presents evidence indicating that strong trade unions are positively correlated with organizational commitment. Finally, contrary to the hypothesis derived from previous studies, cross-level interactions suggest that in countries with strong corporatist industrial relations (IR) institutions, union members have lower levels of organizational commitment than non-union members. The article discusses how the findings contribute to the literature on class, neo-corporatism, and power resources. In addition, it reflects on how the findings contribute to the recent debate on the ‘neoliberal convergence’ of IR systems.