Does the economic census collect data for all businesses, or is it a sample?
For all industry sectors except Construction, data are collected directly from all large businesses, and from a sample of small businesses. For small businesses that are not selected to receive census forms, basic data (sales, payroll, and number of employees) are obtained from administrative records. For the Construction sector, data from establishments that are selected for sampling are expanded to represent all of the establishments in the sector –administrative data are not used for nonsampled establishments.
See Sources of the Data in the 2007 Economic Census User Guide for more information.