Analyzing data on all U.S. employers in a cohort of entering firms, we document a highly skewed size distribution, such that the largest 5% account for over half of cohort employment at firm birth and more than two-thirds at firm age 7. Little of the size variation is accounted for by industry...

Using a large panel of Hungarian firms, we study the relation between firm size and net job creation. Categorizing firms in size groups with the traditionally used measure of employment size in the base year suggests that small firms create a disproportionally higher number of jobs than large...