 The Sabor meets in public sessions in two periods ; the first from 15 January to 30 June , and the second from 15 September to 15 December . Extra sessions can be called by the President of the Republic , by the president of the parliament or by the government . The powers of the legislature include enactment and amendment of the constitution , enactment of laws , adoption of the state budget , declarations of war and peace , alteration of the country 's boundaries , calling and conducting referenda and elections , appointments and relief of office , supervising the work of the Government of Croatia and other holders of public powers responsible to the Sabor , and granting amnesty . <unk> are made based on a majority vote if more than half of the Chamber is present , except in cases of constitutional issues . 
