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Introduction to U.S. Economy: Unemployment


This In Focus provides an introduction to the official
unemployment  rate and alternative measures of
unemployment, briefly examines the reasons for
unemployment,  and places the unemployment rate in a
broader economic context.

How s the Unempoyment Rate
Cal cuated?
The Bureau of Labor Statistics (BLS) releases the official
unemployment  rate, commonly known as the U3 series, on
a monthly basis. The U3 rate measures the number of
unemployed  individuals as a percentage of the entire labor
force.


Unemployment Rate


Number  of Unemployed Individuals
Number of Individuals in Labor Force
(Employed + Unemployed Individuals)


The labor force is all employed and unemployed individuals
aged 16 and older, excluding active-duty military personnel
or the institutionalized. Individuals are considered
employed if they did any work for pay or profit in the
previous week. Individuals are considered unemployed if
they do not have a job, have actively looked for work in the
previous four weeks, and are currently available to work. If
an individual does not have a job, but has either not looked
for work in the previous four weeks or is not currently
available for work or both, that individual is not considered
part of the labor force. Figure 1 displays the official
unemployment  rate (U3) since 2005, which increased
during the past two recession.

Figure I. Unemployment Rate


     20


     Wis







                      -U3   -U6

Source: Bureau of Labor Statistics (BLS).
Notes: Gray bars denote recessions.

This formulation of the unemployment rate can cause
confusion because the size of the labor force, employment,
and unemployment  can all change simultaneously. For
example, if the number of individuals joining the labor


Updated February 24, 2025


force outnumbers those who found work, then the
unemployment  rate would increase despite the increase in
employment. This can happen as the economy recovers
from a recession and individuals who had previously given
up looking for work rejoin the labor force by restarting their
job search.
Alternative  Measures  of Unemployment
BLS  reports other measures of unemployment-called
'measures of labor underutilization'-that include
additional underemployed groups. These measures can
provide a broader sense of labor market conditions. The
most prominent alternative measure is the U6
unemployment  rate, also shown in Figure 1.

Alternative measures of labor underutilization include (1)
the U1 rate-individuals unemployed for 15 weeks or
longer; (2) the U2 rate-individuals who lost jobs or
completed temporary jobs; (3) the U4 rate-the U3 rate
plus discouraged workers (individuals who give a job-
market-related reason for not currently looking for work);
(4) the U5 rate-the U4 rate plus marginally attached
workers (individuals who are available to work, have
expressed a desire to work, and have looked for work in the
past 12 months); and (5) the U6 rate-the U5 rate plus
individuals working part time for economic reasons.

These alternative measures are particularly useful during
recessions in pinpointing the effects on the labor market.
Using the COVID-19  pandemic as an example, Figure 2
compares each measure of underutilization in February
2020 (before the pandemic began), April 2020 (the peak of
unemployment), and January 2025. (As a general
observation, rates are similar, albeit a bit higher, to pre-
pandemic rates at this point.) During the pandemic, the U6
rate increased 14 percentage points as compared with the
roughly 10 percentage-point increase from the U3, U4, and
U5 rates. This indicates that the number of individuals
working part-time for economic reasons was a more volatile
category than other measures of underutilization during the
pandemic.

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