The article presents the thesis that the activity of the organs of local selfgovernment units is based on the constitutional principle of term of office. All cases of shortening or extending their term of office are constitutional matter. As exceptions to the term of office, they cannot be interpreted extensively. In the light of the provisions of the Constitution of the Republic of Poland, failure to conduct elections of local self-government units on time is an attempt to deprive the Nation of its sovereign rights as a supreme power in the state and exhausts the features of anti-democratic activities of state authorities. The work uses the dogmatic method. The legal provisions concerning the term of office of local government bodies’ activities were analyzed. On this basis, the research problem of the constitutionality of extending the term of office of local government units during the term of office has been solved.