PurposeDespite recent efforts to link religion with job satisfaction, the current state of research lacks the knowledge of why there may be a positive relationship between the two variables. This study tries to fill this gap by testing the notion that Christians are more likely to exhibit a higher level of distributive justice perception, which leads to a higher level of job satisfaction. The study also tries to identify Christianity as the moderator in the relationship between distributive justice and job satisfaction.Design/methodology/approachThis study uses secondary data. The study analyzes 13,289 employees in 27 countries in the 2010 European Social Survey, which contains information on the levels of distributive justice perceptions and job satisfaction, as well as the religious affiliations of the respondents. The country fixed effect regression analysis was conducted.FindingsThe analyses first reveal that Protestants, compared to non-Protestants, exhibit a higher level of distributive justice perception, which leads to a higher level of job satisfaction. The analyses also demonstrate that the positive relationship between distributive justice perception and job satisfaction is weaker for Protestants than non-Protestants. These relationships, however, were not evident for people affiliated with other denominations of Christianity.Practical implicationsProtestant employees are likely to maintain a higher level of distributive justice perception, and distributive justice perception matters less in shaping their job satisfaction. As a result, organizations may want to focus more on the other aspects of organizational justice, such as procedural and interactional justices in managing protestant employees, if maintaining job satisfaction level is a concern. With many “Christian-based” companies operating and being supported in today’s economy, the findings in this study can be useful to these organizations that are more likely to attract and have Christians as their employees.Originality/valueThe current study provides evidence that employees’ religious affiliation (i.e. Protestantism in this case) can be a predictor of job satisfaction through the mediation of distributive justice perception. It also offers a basis for future studies on employee morale (e.g. job satisfaction and justice perceptions) to consider religious factors. Finally, the findings also identify Protestant affiliation as a moderator in the distributive justice–job satisfaction relationship.