### Question
How does SOCIAL SECURITY define business?


### Answer
Under *42 U.S.C. § 503*, **business** is defined as:

> a trade or business (or a part thereof)

#### Citation:
  - *42 U.S.C. § 503*
  - Heading: **CHAPTER 7-SOCIAL SECURITY > SUBCHAPTER III-GRANTS TO STATES FOR UNEMPLOYMENT COMPENSATION ADMINISTRATION**

