The duties, responsibilities and structure of organization of the Department of Social Development and Welfare had been specified under the Ministerial Regulation concerning Organising the Structure of the Department of Social Development and Welfare, Ministry of Social Development and Human Security B.E. 2545(2002).
The duties of the Department of Social Development and Welfare are concerning with the provision of social work and social welfare services for the disadvantaged, the poor, the destitute and persons facing social problems by helping them with problem solving and rendering further assistance in the forms of institutional care and referral of cases to other involved agencies. Services also include support given to local communities and local authorities to enable them to render welfare services to the target groups who encounter social problems so that they can lead their life and become self-reliant while maintaining human dignity.