Corruption, political scandals, and the spreading adoption of management practices in the public sector contribute to a decline in public trust. Worldwide initiatives promoting good governance can be observed. At an organizational level, management of ethics has gained in importance as codes of conduct and ethical leadership are promoted. However, public management research has hardly analysed the impacts of these measures. To address this research gap, we conduct a between-subjects experiment among public administration employees. Our results reveal that only ethical leadership has a positive effect on employees' organization-related attitudes. Our findings suggest avenues for further research.