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Office of Survey Methods Research
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Published Year: 2012
Survey/Program(s): Office of Employment and Unemployment Statistics
Catalog: Economic Working Paper
WP Number: WP-452
Publication Status / Disposition: Office of Employment and Unemployment Statistics (February 2012).
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The Declining Average Size of Establishments: Evidence and Explanations
Abstract
The average size of establishments rose through the expansion of the 1990s, and then fell slightly during the expansion of the 2000s. In this paper, we seek to understand the change in trend in the average size of establishments during the last two decades. We begin with an exploration of the robustness of the basic empirical facts. Both Business Employment Dynamics statistics from the Bureau of Labor Statistics and Business Dynamics Statistics from the Census Bureau show that the average size of businesses – both establishments and firms – is growing slower in the 2000s than in the 1990s. The Census Bureau data also show the trends of average size in the 1990s are similar to the trends from the late 1970s and the 1980s. Our empirical analysis results in two main conclusions. First, the change in trend of the average size of establishments occurs in almost all industries, and our decomposition shows that the sizeable shifts in industry composition that occurred in the U.S. economy during the past two decades account for only about half of the downward trend during the 2000s expansion. Second, we find that the decrease in the average size of establishments during the 2000s expansion can be explained by the age of establishments. Specifically, we find that establishment births are starting smaller and staying smaller.