Informal caregivers are the unpaid persons who take care of a not self-sufficient family member, due to old age or chronic illness or disability. As in all the European countries, the demand for informal cares is further increased as a result of the ageing societies and the social and political fallout of informal caregiving is a very current and important issue. We have overviewed some international scientific literature, with the aim of understanding the key research objectives to be firstly pursued to address this problem.