What is the full form of "NSSO" ?

The National Sample Survey Office (NSSO), formerly called the National Sample Survey Organisation was the largest organization in India conducting periodic socio-economic surveys. It defines unemployment as a situation in which all those who, owing to lack of work, are not working but either seek work through employment exchanges, intermediaries, friends or relatives or by making applications to prospective employers or express their willingness or availability for work under the prevailing condition of work and remunerations.