On what basis are the industries in the CES Survey classified?
A sample establishment in the CES survey is an economic unit, such as a factory, which produces goods or services. It is generally at a single location and engaged predominantly in one type of economic activity. Establishments reporting on the schedule (form BLS 790) are classified into industries based on their principal product or activity determined from information on annual sales volume. This industry classification, based on the 2002 North American Industry Classification System (NAICS) Manual, is collected on a supplement to the quarterly unemployment insurance tax reports filed by each employer. For an establishment making more than one product, the entire employment is included under the industry of the principal product or activity.
