JPS serves government agencies and private sector companies:

Government Contracts Group
Corporation for National and Community Service (CNCS)
Equal Employment Opportunity Commission (EEOC)
Federal Labor Relations Authority (FLRA)
U.S. Army
U.S. Bureau of Customs and Border Protection (CBP)
U.S. Department of Commerce (DOC)
U.S. Department of Defense, Dependent Schools (DOD)
U.S. Department of Labor (DOL)
U.S. Department of State (DOS)
U.S. Department of Transportation (DOT)
U.S. Federal Aviation Administration (FAA)
U.S. Federal Communications Commission (FCC)
U.S. Internal Revenue Service (IRS)
U.S. Navy
Global Industrial Group

Alberta Envirofuels
Americas Styrenics
Angola LNG
Bahrain Petroleum
Bayer
BP
Buckeye Partners
Cabinda Gulf Oil
Caltex
Caspian Pipeline
Chevron
Chevron Phillips
CHS
Colonial Pipeline
ConocoPhillips
Eliokem
Enbridge
Enterprise Products
Ergon Refining
Explorer Pipeline
ExxonMobil

Galp Energia
Hunt Refining Company
Kinder Morgan
Koch Industries
LyondellBasell
Magellan Pipeline
Marathon
OMNOVA
OXEA
Petro-Canada
Plains All American Pipeline
PPL
Qatar Chemical
Ras Laffan Olefins
Saudi Chevron Petrochemical
Shell
Sunoco
Tengizchevroil
TEPPCO
Tesoro
Unocal East China Sea
Valero