A professional and academic discipline committed to the pursuit of social welfare and social change is known as social work. Social workers usually work towards research and practice to improve the quality of life and development of the potential of each individual, group and community of a society. Welfare organizations provide financial or other aid to people in need which is also known as welfare. In Houck, welfare can take a variety of forms, such as monetary payments, subsidies and vouchers, health services, or housing. Welfare can be provided by governments, non-governmental organizations, or a combination of the two.