Emotional intelligence since its emergence as a new construct in the scientific sphere, to this day, is gaining in importance in the entrepreneurial world. Although intelligence and emotions were originally considered to be two exclusive concepts, after many insights, a strong interest has emerged in the last few decades, mostly in the managerial sphere, for a deeper study of emotional intelligence. Due to the constant changes in the business environment, it is very important for the leader to establish a relationship with his subordinates, and to establish an emotional connection with them in order to more easily motivate them to perform tasks. Managing emotions in the right way leads to making the right decisions and the right behaviors of the individual. The main goal of this master thesis is to try to find a connection between the emotional intelligence of the leader and his intensity of activity, acting on his subordinates to achieve higher goals of the company. In the business life of managers and entrepreneurs, their activity is measurable by the success of the companies they run, financial results, but also human resource management. The main task of leadership is to find a balance between the leader, the followers and the situation in which they find themselves. To successfully perform this task, a leader must possess the appropriate abilities, power, and motivation. Empirical research on the relationship between emotional intelligence and the intensity of a leader's activities was conducted through two anonymous questionnaires on a sample of 26 people, men and women, who hold managerial positions within several companies from different business spheres.