The law on euthanasia provides that a commission be established to supervise and evaluate the implementation of the law concerned. This supervision is realised by means of a registration document which each physician having practiced euthanasia must fill in and send to the commission. In this way, the commission assures a permanent follow-up of the implementation of the law. The article analyzes the activities of the commission. It reveals that, by these activities, the legislator is well-informed about the implementation of the law. Moreover, this supervision and evaluation constitute an efficient and constructive method to help the physicians act correctly, with regard to the sick persons at the end of their live.