Pursuant to the Constitution of the Republic of Croatia, the Speaker of Parliament:
• may convene Parliament in an emergency session, upon receiving a prior opinion from the parliamentary parties;
• shall replace the President of the Republic in circumstances referred to in Article 97 paragraph 1 of the Constitution;
• shall assume the office of President pro tempore of the Republic pursuant to the decision of the Constitutional Court in circumstances referred to in Article 97 paragraph 2 of the Constitution or by virtue of the Constitution in circumstances referred to in Article 97 paragraph 3 of the Constitution;
• shall co-sign the decision on the appointment of the Prime Minister adopted by the President of the Republic pursuant to the decision of the Croatian Parliament on confidence in the Government of the Republic of Croatia, and shall co-sign the decision on the appointment of the members of the Government adopted by the Prime Minister;
• shall notify the President of the Republic of Croatia if in circumstances referred to in Article 116 paragraph 7 of the Constitution a vote of confidence in the new Prime Minister-Designate and the members put forward as members of the Government is not carried within 30 days.
Pursuant to Article 33 of the Standing Orders of the Croatian Parliament, the Speaker of Parliament shall:
• represent Parliament;
• convene and preside over the sessions of Parliament;
• table motions from authorised sponsors for stipulated procedures;
• propose the agenda for sessions of Parliament;
• manage the procedures for the enactment of laws and other regulations;
• co-ordinate the activities of working bodies;
• sign laws and other regulations enacted by Parliament;
• refer enacted laws to the President of the Republic for promulgation;
• manage relations between Parliament and the Government;
• co-sign decisions on the appointment of the Prime Minister and the appointment of members of the Government;
• accept sponsorships ex officio;
• approve, taking into account available funds, the travel of Members of Parliament abroad when they have been invited, as Members of Parliament, by a state or foreign organisation;
• co-ordinate the work of standing delegations of Parliament in international parliamentary and other institutions;
• determine, at the proposal of political groups, the composition of temporary delegations of Parliament in visits to foreign representative bodies and organisations, such that they generally correspond to the party structure of Parliament and observe the appropriate representation of both sexes;
• determine the composition of temporary delegations in cases where he/she is invited abroad as the Speaker of Parliament, observing the appropriate representation of both sexes;
• designate representatives of Parliament at ceremonial and other occasions, observing the appropriate representation of both sexes;
• submit a request, at the proposal of the Secretary of Parliament, for securing funds for the work of Parliament and the Staff Service of Parliament;
• ensure the protection of the rights and exercise of duties of Members of Parliament;
• administer the oaths of elected and appointed officials, when specified by law and these Standing Orders;
• perform other activities determined by the Constitution of the Republic of Croatia, law and these Standing Orders.