Before he took over hosting The Tonight Show” in September 1962, Johnny Carson hosted an afternoon quiz television show called “Who Do You Trust” (originally titled “Do You Trust Your Wife”). I used to watch it when I came home from school before digging into my homework. Looking at the revisions to the monthly report of nonfarm payroll employment, the show’s title gained more relevance to me now. Billions of dollars, maybe trillions, of transactions in financial instruments take place in reaction to the first estimate of the change in nonfarm payrolls on the day each month that the Bureau of Labor Statistics (BLS) releases its report. That first estimate of the monthly change in nonfarm payrolls gets revised in each of the following two months. But those revisions, although sometimes mentioned by the mainstream financial media, tend to be put aside in the frenzy of trading that takes place in the nanosecond after the BLS releases its monthly report of the Employment Situation.
I decided to take a look at how much the monthly changes in total nonfarm payrolls get revised from their preliminary estimate to their “final” estimate two months later. (I put quotation marks around final because there are of course, subsequent benchmark revisions.) Plotted in Chart 1 are the BLS first estimates for monthly changes in total nonfarm payrolls (the red bars) and its third estimates (the blue bars). (Ignore the November and December 2023 data points inasmuch as the BLS has not yet reported its final estimates for the changes in nonfarm payrolls for these months.) Plotted in Chart 2 are the monthly differences in changes in total nonfarm payrolls between the third estimate by the BLS and its first estimate. Notice that in the 10 months ended October 2023, there is only one month, July 2023, in which the third estimate is greater than the first estimate. Plotted in Chart 3 are the 10-month cumulative totals in the monthly differences between the third estimates of the changes in total nonfarm payrolls and the first estimates. Attention should be focused on the last data point, October 2023, which reads minus 417 thousand. So, in the first 10 months of 2023, the cumulative total of monthly changes in nonfarm payrolls was 417 thousand less when the third estimate of the monthly change in nonfarm payrolls is compared with the first estimate. But these 417 thousand jobs that got revised away probably had no effect on the analyses of the state of the US labor market made by the talking heads on CNBC and Bloomberg when the November and December 2023 first estimates of changes in nonfarm payrolls were reported by the BLS.

