Social workers find people who need help. They get people, typically children, out of bad homes or troubling situations. Among their daily responsibilities is identifying people who need help and figuring out how to help them, whether it be setting up a rehabilitation plan or finding a good home for a child in need of one, or anything inbetween.
One of the main issues that faces social workers is the fact that what they see and deal with on a daily basis can take a toll on their own mental health and outlook on life, especially those who work with troubled or abused children. Often social workers are the ones who arrange homes for orphans whose parents died or abandoned them, or children who were taken away from abusive and neglectful parents.
The work they do, however, is very important, because they take these children out of these bad situations and place them into loving, caring homes where they will be protected and loved.
Social workers help children and families by arranging homes for orphans or abused or neglected children, they can also get counselors and therapists for families who are struggling with things like mental health problems in one of the members, marital fights, excessive fighting between siblings, and any other scenario you could think up.