In this study, we invoke a social identity and job resources perspective to investigate the impact of an organization's internal and external employer brand images on employee absenteeism. Specifically, using workforce samples of 56 Belgian companies (n = 12670) and a second independent study sample (n = 4461), we assess the relative importance of the internal employer brand image (i.e. employee perceptions) and the external employer brand image (i.e. non-employee perceptions) in predicting the absenteeism rate in these organizations. Results show that corporate absenteeism decreases as internal (employee) views and external (non-employee) views of the organization decline. Results further show that the external employer brand image may be a more important driver of absenteeism than the internal employer brand image. Such results highlight that an organization's external image may be a strong antecedent of important internal organizational behavior outcomes.