(a) Except by procedures provided in this charter, the terms of office of the elective officers and of member of boards and commissions appointed for definite terms shall not be shortened. The terms of elective officers of the city shall not be extended beyond the period for which any such officer was elected except that an elective officer shall, after that officer’s term has expired, continue to hold office until a successor to that office has qualified and is elected or appointed
(b) The council shall not grant or authorize extra compensation to any officer or employee after the services have been rendered.