Social work is a professional service that uses knowledge and skills to determine people's social, economic, and emotional problems in order to promote social change, problem solving, empowerment, and independence. The document outlines the scopes of social work such as in schools, hospitals, child protection services, and human rights as well as challenges including doing more with less resources, economic decline, dealing with complex client needs, safety concerns, and ethical dilemmas. Other challenges include differences in morals, adapting to change, combating social isolation, compassion fatigue, and responding to environmental changes.