There was a time that the term "social worker" referred to those caseworkers who travel to client homes and create a report of situations. Over the last ten years, that has changed as social work has expanded into other areas.
Many new careers in social work require only a Bachelors Degree in order be hired. However, in order to move up the ladder or move into a different field of social work, a Masters Degree in Social Work (MSW) is necessary.
Social workers can also help people and their families fix serious domestic issues, typically involving some sort of child or spousal abuse. A MSW Degree can lead to a number of various positions.