Abstract
The COVID-19 pandemic significantly affected data collection for the nation’s primary source of household-level labor force data, the Current Population Survey (CPS). In the first four months of the pandemic period (March-June 2020) the average month-over-month nonresponse rate increased by 58 percent, while the size of newly entering cohorts declined by 37 percent relative to the prior 15 months. Together, these factors reduced the overall sample size of the CPS by around 16 percent. We hypothesize that these changes, and significant associated shifts in the demographic composition of the sample, were caused by the cessation of in-person interviewing. Geographic variation in nonresponse over this period does not appear related to variation in COVID case rates across metro areas or states. Using this change in interview technology as a natural experiment, we compare employment outcomes of those who entered the survey pre- and post-COVID pandemic and find evidence that the change in recruiting individuals into the survey likely affected estimates of unemployment and labor force participation. In an exercise generating a counterfactual group of “missing” respondents, we estimate that, between April and August of 2020, the unemployment rate was approximately .4 percentage point higher, and the labor force participation rate was approximately 1.3 percentage points higher than estimates using the actual sample of respondents.
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