The change in total nonfarm payroll employment for June was revised down by 10,000, from
+4,791,000 to +4,781,000, and the change for July was revised down by 29,000, from +1,763,000
to +1,734,000. With these revisions, employment in June and July combined was 39,000 less than
previously reported. (Monthly revisions result from additional reports received from businesses
and government agencies since the last published estimates and from the recalculation of
seasonal factors.)

https://www.bls.gov/news.release/empsit.nr0.htm

Since March, household survey interviewers have been instructed to classify employed persons
absent from work due to temporary, coronavirus-related business closures or cutbacks as
unemployed on temporary layoff. BLS and Census Bureau analyses of the underlying data suggest
there still may be some workers affected by the pandemic who should have been classified as
unemployed on temporary layoff. However, the share of responses that may have been
misclassified was much smaller in July and August than in prior months.

For March through July, BLS published an estimate of what the unemployment rate would have
been had misclassified workers been included. Repeating this same approach, the overall
August unemployment rate would have been 0.7 percentage point higher than reported. However,
this represents the upper bound of our estimate of misclassification and probably overstates
the size of the misclassification error.