Among the various existing definitions of public policy, according to the reasoning of many authors who have devoted a large part of their careers and life to studying it as well as the processes of its creation, the one that suggests that public policy is, in short, the decision of a government to do something or not to do something about particular social challenges or issues, stands out as perhaps the most memorable. It is the government that wields certain instruments with which it implements its goals as part of public policy. It strives to secure the legitimacy for the implementation of its decisions through the parliament as the legislative body which, in accordance with its authority, among other things, enacts and amends laws. In addition, the parliament also wields certain instruments of supervision in cases where it considers that the (in)action of a member of government resulted in certain unfavourable consequences for the population or the state itself. The parliament supervises the work of the Government and the Government bears responsibility for its work. In order to avoid a (too strong a) concentration of power in one place that could potentially be misused, and for the purpose of preventing bad political practices and protecting the constitutional and legal order as well as the rights of citizens, in countries which are parliamentary democracies, which includes the Republic of Croatia, the polity is based on the division of power. It can be said that one of the most important tasks of the parliament is to supervise the implementation of public policy aimed at protecting the interests of citizens and of the state. Otherwise, as a last measure of „control“, the parliament will propose a vote of confidence against a member of the Government of the Republic of Croatia in response to their unsuccessful performance as one of the (co)creators of public policy.