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Each month the Bureau of Labor Statistics attempts to estimate how many jobs
were created (or eliminated) by smaller businesses not yet included in its
survey of employers. This estimate is referred to as the "birth/death" adjustment.
In the 12 months ended June, total-not-seasonally-adjusted nonfarm payrolls
increased by 1.982 million. During the same interval, the birth/death adjustment
contributed 1.111 million jobs to the total. That is, in the 12 months ended
June, the birth/death adjustment accounted for 56.0% of the 12-month increase
in total nonfarm payrolls.
What has been happening to the relative contribution of birth/death estimates
as the economy has slowed in the past year? The chart below shows that it has
been rising. In the 12 months ended March 2006, the birth/death adjustment
was contributing only 30.9% of the jobs to the change in nonfarm payrolls.
The birth/death relative contribution has been trending higher since then.
Notice that as the birth/death contribution to nonfarm payrolls has been trending
higher, the percentage of small businesses saying that now is a good time to
expand their operations has been trending lower. If existing small business
managers do not think now is a good time to expand their operations, does it
make sense that there are a lot of new small businesses starting up and hiring?
Chart 1

Perhaps because the birth/death adjustment is not, itself, adjusted for the
phase of the business cycle the economy is in, it is biasing upward the growth
in nonfarm payrolls now. Perhaps the birth/death adjustment is the answer to
the Fed's latest conundrum with regard to stronger-than-expected payroll growth
given the sharp slowing in real GDP growth.
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