Social service activities for solution of problems emerged form industrial revolution has got scientific and professional status. This scientific and professional method of sustainable problem solution is social work.
Social welfare helps to achieve holistic welfare (Physical, mental, social, family, and economic) of all problem people by creating constructive and favorable social, economic and cultural environment. Social welfare helps problems person, group and community in such a way they can be self reliant and conscious to solve their problems and in decision making. Social worker has to be theoretical knowledge oriented for this purpose.