This paper presents the question about the interaction between human and collaborative robots, their joint actions in the safety-shared workspace. Presented difference between collaborative robots and other robotic solutions. Collaborative robot technical specification reviewed and the efficiency of human-robot interaction and the HRC Index. In safety case, it is important to identify sources of potential harm, to determine which of the persons in the robot’s vicinity may be in peril and to assess the type of injuries the robot may cause to this person. One of the main tasks that we reviewed is to organize effective interaction between a human and a collaborative robot, taking into account their capabilities.