Depression is a common mental disability, characterized by constant sadness and a loss of interest in activities that one typically enjoys, accompanied by an inability to perform daily activities. From severe clinical depression suffers 2 to 5% of the elderly and between 8% to 16% shows clinically significant symptoms of depression. Depression risk factors manifest themselves on a biological, psychological and social level. According to the behavioral model of late life depression, the risk factors are physical ailments, limited functional ability, stressful life events combined with difficult to cope with emerging situations, which leads to limitations of positive exacerbation and development of depression. The most significant consequences of depression in the elderly are severe reduce of quality of life and high rates of suicide. Suicidality is the behavior by which a person is put to death while being driven by the tendency to be put to death. It is a public health problem that is most prevalent in the older age group. Social work plays an essential role in recognizing symptoms in vulnerable groups, in providing services and rights as provided by law, in promoting mental health and in preventing depression and suicidality in society.