Hidden unemployment is an informal term for unused or underused labor not captured by a headline unemployment rate. The group being discussed needs to be specified, such as discouraged jobseekers or people working part time for economic reasons.
Those groups are not necessarily missing from official statistics. Agencies publish additional categories and broader measures alongside the headline rate.

Why somebody can be outside the headline rate
The US Bureau of Labor Statistics explains how unemployment is measured. Generally, a person must have no job, be available and have actively looked for work during the previous four weeks. There are specified exceptions, including people on temporary layoff awaiting recall.
Someone who wants work but has stopped actively searching may therefore be outside the unemployment count. Their status is determined by the survey’s work, search and availability questions, rather than simply by whether they receive benefits.
Marginally attached and discouraged workers
In the BLS definitions, marginally attached people are outside the labor force, want and are available for work, and have searched during the previous 12 months but not during the latest four weeks.
Discouraged workers are a subset who give a job-market-related reason for not currently looking. The terms are not interchangeable, and not every person outside the labor force wants a job.
Part-time work and broader measures
People working part time for economic reasons remain employed. They want and are available for full-time work, but economic conditions, such as reduced hours or the inability to find full-time work, limit them.
The BLS publishes U-6 alongside the headline U-3 measure. U-6 includes unemployed people, all marginally attached people and those employed part time for economic reasons. Its denominator is the civilian labor force plus the marginally attached.

In the fictional example, U-3 is 50 ÷ 1,000, or 5%. U-6 is 130 ÷ 1,020, or approximately 12.7%. The 60 part-time workers are already among the employed, so they are not added to the denominator again.
This broader measure identifies more labor underuse. It does not reclassify every person in its numerator as unemployed.
Underemployment is not always a skills mismatch
The International Labour Organization distinguishes forms of labor underutilization. Time-related underemployment concerns employed people who want and are available for additional hours and meet the relevant hours criterion.
A worker whose qualifications exceed a job’s requirements has a skills mismatch. That fact alone does not establish unemployment or inclusion in U-6. Informal labels such as “hidden” and “disguised” vary between discussions, making a precise measured category more informative.
Duration and causes are separate questions
Long-term unemployment can still be included in the headline count. Definitions differ: BLS uses 27 weeks or more, while the OECD uses 12 months or more.
Terms such as frictional and cyclical unemployment discuss why unemployment occurs. They do not replace the survey criteria used to classify whether someone is employed, unemployed or outside the labor force.
Last checked and updated on November 2, 2026 by the MBN editorial team.