The headline unemployment rate answers a narrow question: what share of the labor force is jobless, available, and actively looking for work? U-6 widens the lens. It adds people working part time for economic reasons and people marginally attached to the labor force, who want and are available for work and have searched sometime in the prior 12 months but not in the four weeks before the survey. The distinction matters when a person has a job but cannot get enough hours, or has stepped back from a recent job search. Neither measure, by itself, describes every hardship behind a labor market number.
The headline has a defined boundary
The Bureau of Labor Statistics classifies people as unemployed when they have no job, have actively looked in the prior four weeks, and are available to work. People with jobs are counted as employed even if they work part time; those without a job who are not looking or available fall outside the labor force. The categories come from a household survey, not a tally of unemployment-insurance claims. Bureau of Labor Statistics
That boundary makes the headline rate useful for tracking a specific kind of joblessness, but it excludes people who want more hours and people whose job search has paused. As of September 2026, the unemployment rate was 4.2 percent, and the number of people employed part time for economic reasons was 4.5 million. Those are separate measures, not interchangeable descriptions of the same group. Bureau of Labor Statistics
U-6 adds constrained hours
The first addition is people working part time for economic reasons. They have jobs, so they count as employed in the headline measure, but they would prefer full-time work and are part time because their hours were cut or they could not find a full-time job. U-6 treats their situation as labor-market slack without reclassifying them as unemployed. Bureau of Labor Statistics
This can clarify why a low headline rate does not mean every person who wants more work can get it. Someone with a short weekly schedule may be earning wages and still lack the hours they want. The distinction is practical: the headline counts whether a person has a job under the survey definition; the broader measure also recognizes that the job may not provide enough work.
A wider circle of people seeking work
U-6 also includes people marginally attached to the labor force. They want a job and are available, have searched at some point in the prior 12 months, but did not actively search in the four weeks before the survey. The U-6 rate divides the unemployed, marginally attached, and part-time workers for economic reasons by the labor force plus the marginally attached. Bureau of Labor Statistics The U-6 rate divides the unemployed, marginally attached, and part-time workers for economic reasons by the labor force plus the marginally attached. Bureau of Labor Statistics Because they did not meet the headline’s recent-search test, they are not classified as unemployed there. Bureau of Labor Statistics
Discouraged workers are a subset of the marginally attached: they say they believe no jobs are available for them. The categories are not a general measure of everyone who might work someday. For example, a person who has not searched in the past year does not meet the marginal-attachment definition described here, even if they would consider a job. Bureau of Labor Statistics
What the broader rate can and cannot say
U-6 can show labor-market strain that the headline leaves outside its frame: involuntary short hours and recent would-be job seekers who have paused their search. The September report separately counted 1.5 million marginally attached people, including 414,000 discouraged workers. These figures illuminate groups included in the broader measure; they do not establish why each person is in that position or what an individual household can afford. Bureau of Labor Statistics
Reading the two rates together is more informative than treating either as a complete verdict. The headline tracks people meeting a clear unemployment test. U-6 adds other forms of underuse of available labor. A difference between them signals that those additional groups matter to the measure, but it cannot tell a reader whether a particular person will find work or whether the economy is improving for every worker.
Sources & further reading
- How the government measures unemployment ↗Bureau of Labor Statistics
- September 2026 employment report ↗Bureau of Labor Statistics
- Alternative measures of labor underutilization: U-1 through U-6 ↗Bureau of Labor Statistics
,_Surrey_-_September_2025_-_03.jpg){kind=link}