Work Organization Characteristics (NHIS 2021) Charts
National Health Interview Survey (NHIS 2021)

Work Organization charts are based on data from respondents to the 2021 NHIS Occupational Health Supplement (NHIS-OHS) that were employed in the week prior to interview. The NHIS is a survey that collects data on a broad range of health topics through personal household interviews. Supplemental questions specific to occupational health were included in 2021. Night shift work: This is not directly comparable to the 2015 data for “frequent night shift work” because the questions about overnight work were asked differently. Shift work (any alternative shift): This is fairly comparable to the 2015 data for “any alternative shift”.Data Updated: February 2025

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Unadjusted Prevalence of Work Organization Characteristics (NHIS 2021) Among Workers (NHIS-OHS)

Source: National Health Interview Survey (NHIS 2021)

Unadjusted Prevalence of Work Organization Characteristics (NHIS 2021) Among Workers (NHIS-OHS)

Night Shift Work148,097,5406,338,2094.283.874.71N/A0.000.00
Shift Work (Any Alternative Shift)148,097,54030,684,08920.7219.9121.54N/A0.000.00
a.
Estimates are based on a sample of US adults rather than the entire population. Comparisons between unadjusted or adjusted prevalence rates for different groups should take into account the 95% confidence limits
b.
Estimates adjusted for age, sex, and race using the projected 2000 U.S. population as the standard population.
c.
LCL is the Lower Confidence Limit.
d.
UCL is the Upper Confidence Limit.
N/A.
Data not displayed, likely due to insufficient sample size.

Data Source

National Health Interview Survey (NHIS 2021)
National Health Interview Survey (NHIS 2021)

The National Health Interview Survey (NHIS) is an annual, in-person health survey and the principal source of information about the health of the civilian, non-institutionalized, household population of the United States. The survey is conducted by the National Center for Health Statistics, part of the Centers for Disease Control and Prevention. The NHIS sample is designed and weighted to produce national estimates. NIOSH uses data from the NHIS to estimate the prevalence of various health conditions and health behaviors among US workers. The charts available here are based on NHIS data from 2021.