Employment relationship of a academic teacher, determined by pragmatic regulations of the higher education act, demonstrates specific characteristics in various aspects, with particular focus on the aggregate of rights and obligations. This kind of reflection makes also regulation of working time to be perceived through the prism of the characteristics of the employment relationship of a academic teacher since its particular content elements determine differences in defining the task-based working time. The mechanism of implementing the system of working time, tasks of a academic teacher, and in particular regulations connected with providing the teaching obligations are essential factors in defining the autonomous character of the task-based working time system of a academic teacher.