Table 3-16
Alternative measures of labor underutilization
 
Measure       Definition
 
U1   Percentage of the labor force unemployed for 15 weeks or longer
U2   Percentage of the labor force who lost jobs or completed temporary work
U3   Official unemployment rate: percentage of the labor force without jobs who have actively looked for work within the past four weeks
U4   U3 + percentage of the labor force who are discouraged workers (those who have stopped looking for work)
U5   U4 + percentage of the labor force who are marginally attached workers (those who would like to work but have not looked for work recently)
U6   U5 + percentage of the labor force who are part-time workers but want to work full time
 

SOURCE: Bureau of Labor Statistics, http://www.bls.gov/lau/stalt.htm.

Science and Engineering Indicators 2012