In order to ensure the sustainability in agency relationships, the agent must act in accordance with the fidu-ciary duties, the breach of which presupposes the negative legal consequences on the side of the agent. The purpose of this article is to reveal the content of agent’s fiduciary duties and the legal consequences of their breach in Lithuania maefrom a comparative perspective. It is concluded that neither the legal regulation nor the case law in Lithuania dis-closes the content of the agent’s fiduciary duties and the legal consequences of their breach. Therefore, more detailed legal provisions would help to ensure a balance of the rights of the subjects involved in agency relationships.

DOI: https://doi.org/10.3846/bm.2022.772