Social worker - someone employed to provide social services (especially to the disadvantaged)
Some examples of what a social worker does is help young children and teens find better homes or help fix problems in homes they currently are in . (abusive caretakers & bad living conditions) They also help people with addictions to alcohol and to drug addictions. From time to time they also help counsel people. ( Listen to there issues and provide advice.)
They take children who are being abused and under cared for and place them is foster homes. In some cases if the care taker can "clean up there act" the child can be placed back in the house. In other cases they can be adopted or permanently be in foster care.
With counseling they listen to people issues. They provide advice and never tell anyone the information you tell them unless it is life threatening or illegal.