In our last blog post , we explored how employment numbers are recorded among U.S. firms at a single point each year—March 12—and how this approach fails to capture the volatility of employment among small firms with 1–20 workers. In today’s post, we use new data from the SFD USA sample to further illustrate this point. Our researchers gather the number of workers at the firms every two to four weeks. This higher frequency approach allows us to observe changes as they happen: