Distribution of workers by size of establishment, March 2001 Size Percent Workers 1,000 or more workers 11.7 12,719,281 500 to 999 workers 7.3 7,915,226 250 to 499 workers 9.7 10,612,301 100 to 249 workers 16.7 18,162,601 50 to 99 workers 13.1 14,323,594 20 to 49 workers 16.6 18,104,821 10 to 19 workers 10.6 11,589,258 5 to 9 workers 7.9 8,633,851 Fewer than 5 workers 6.3 6,887,128