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Defense Primer: Personnel Tempo (PERSTEMPO)

As a result of the nation's extended involvement in
contingency operations around the globe, some
servicemembers have experienced prolonged, frequent,
and/or stressful deployments. In addition, preparation for
deployments (e.g., training, exercises, temporary duty
assignments) can lead to extended working hours or
frequent travel away fromhome station. The pace of
operations for individuals is commonly referred to as
personnel tempo (PERSTEMPO) and can affect quality of
life, work satisfaction, and overall morale for members and
their families.
Congress oversees the Department ofDefense's (DOD's)
PERSTEMPO management, policies and programs. In
addition, congressional actions to authorize force size (i.e.,
end-strength) can affect the number of personnel available
for deployment. Appropriated funds for military pay and
benefits (including leave and morale programs) may
compensate troops for time spent away.
Background and Definitions
During the mid-1990s, though the nation was not engaged
in major conflict, a combination of force drawdowns and
increaseddeployments in support ofpeacetime missions
(e.g., peacekeeping and humanitarian operations) putstress
on servicemembers, particularly those in high-deploying
specialty units. A 1996 Government Accountability Office
(GAO) report found that DOD did not have consistent goals
or policies for managing personneltempo.
Recognizing a need to more accurately measure the pace of
operations on military personnel, in 1999, Congress first
added a statutory definition for deployment, established
high-deploymentthresholds (thendefined as 182 days or
more out ofthe preceding 365 days), and required Secretary
of Defense (SECDEF) approval to exceed those thresholds.
The law, known as the FY2000 National Defense
Authorization Act (NDAA; P.L. 106-65), also required the
Under Secretary ofDefense (USD)for Personneland
Readiness (P&R) to develop standardized terminology and
policies for operating tempo for units (OPTEMPO) and
personnel (PERSTEMPO) and required DOD to track and
report on these categories.
Shortly after the September 11, 2001, attacks, the SECDEF
suspended statutory high-deployment thresholds under the
waiver authority in law. However, under department policy
(DOD Instruction 1336.5), the Services continued to track
deployment days. As operations in Afghanistan and Iraq
intensified, many raisedconcerns thatindividuals within
certain military occupational specialties were experiencing
both lengthy andfrequent deployments. While the
PERSTEMPO measures captured deployment duration,
they did not adequately capture the down time, or dwell
time, members had between deployments. In 2007, DOD
established deploy-to-dwellplanning objectives, andin the

FY2012 (NDAA; P.L. 112-81), Congress established a
statutory definition of dwell time (see Table 2 for a timeline
of selected events).
Current definitions take into account a broad range of
activities thatkeep servicemembers away fromhome
(Table 1). Activities notincluded as deployment events,
include, for example, military duties extending beyond
normal working hours but conducted at the member's hon
duty station, also known as permanentduty station.
Table I . Statutory Definitions and Thresholds
Term                      Definition
PERSTEMPO          The amount of time servicemembers
are engaged in their official duties at a
location or under circumstances that
make it infeasible for a member to
spend off-dutytime in the housing in
which the member resides.
OPTEMPO            The rate at which units are involved in
all military activities, including
contingency operations, exercises, and
training deployments.
Deployed or in a Any day on which, pursuant to orders,
deployment         the member is performing service in a
training exercise or operation ata
location or under circumstances that
make it impossible or infeasible for the
member to spend off-dutytime in the
housing in which the member resides
when on garrison duty at the member's
permanent duty station or homeport.
Current high       One-year 220 days deployed out of the
deployment         previous 365 days. Two-year 400 days
thresholds*        deployed out of the previous 730.
Dwell time         The time a regular member of the
armed forces or unit spends at the
permanent duty station or home port
after returning from deployment, or the
amount of time a reservist remains at
the member's permanent duty station
after completing a deployment of 30
days or more in length
Sources: 10 U.S.C.§991 and 10 U.S.C.§I 36(d).
Notes: Contingency operations are as defined in 10 U.S.C.
§101(a)(I3)(B).*High -deployment thresholds have been waived since
2001 underthe SECDEF authority in 10 U.S.C. §991 (d). Accordingto
a November I, 201 3, USD (P&R) policy memo, involuntary extension
of a deployment beyond 365 days requires SECDEF approval.

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