Performing a Background Check means verifying the background history of a person.
In the context of normal civilian pre-employment screening, this usually refers
to the completion of one or more of the following: an I.D.verification which
includes the verification of their Social Security Number and their address
and employment history, a Criminal Conviction History check, a Civil Litigation History
check, a Driver's License Record check, a Personal Credit History check, an
Education Verification, an Employment Verification, a Professional License
Verification --- and usually, a Drug Test to detect the use of illegal drugs
and/or the illegal use of controlled substances.