Social work is a complex profession that can be difficult to define. In the past, social workers were called upon to work with the most vulnerable members of our society; children. While many social workers still work with children, the field of social work has expanded. Today, you can find social workers everywhere from hospitals to homeless shelters. And while the broadness of the field can make the role of social workers difficult to define it also makes social work an extremely versatile and marketable profession.