Despite the significant contributions of this study, several limitations were encountered and should be addressed in future research. The survey sample included only employees from large and medium-sized companies in the United States. Organizations outside the scope of this research or from other cultural settings should be careful in making inferences from the findings. Future research can cross-validate the relationships tested in this study in different organizational (e.g., non-profit, government) and cultural settings. Also, the data in this study were gathered by an international survey firm through its patented random online sampling procedure. Thus, the response rate of the survey was unknown. Moreover, this study may be subject to common source measurement error because data were gathered from the employees’ perspective. Future studies can incorporate the insights of organizations or managers and qualitative methodological approaches (e.g., document analysis, qualitative interviewing, participant observation) to obtain triangulated and objective (instead of perceptive) data. Finally, future endeavors should empirically examine other potential outcomes of ethical leadership and drivers of employee engagement at the individual, group, and organizational levels.