Quarterly Census of Employment and Wages data show the divergence from the establishment survey measurment of total employment in the months before the peak.
Figure 1: Year-on-year growth rate in nonfarm payroll employment from establishment survey (red), from Quarterly Census of Employment and Wages (blue), both calculated as 12 month log differences. Source: BLS, author’s calculations.
NBER identified peak is 2020M02.