In Illinois, is it legal to tape record a telephone conversation
without the permission of both parties?  The taping is done for
training purposes.

Hi Nick,

In brief, "No".

According to the "Self Help Legal Center" Web page of the Illinois
School of Law, "Not only is it illegal, in Illinois it is a Class 4
felony."

The applicable statute is 720 ILCS 5/14, a statute which governs
eavesdropping. The article on the site goes on to note, "A person
violates the eavesdropping law when he/she knowingly and intentionally
records all or any part of any conversation 'without the consent of
all of the parties' to such conversation or electronic communication."

There are exceptions, such as exceptions for law enforcement, for
meetings required to be open under the Open Meetings Act, and for
businesses which monitor customer service, as well as an exception if
you have a reasonable suspicion one of the parties has committed, or
is about to commit, a criminal act against you or a member of your
family.

You can read the full article at...

http://www.law.siu.edu/selfhelp/newsletter/09_5.htm

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regards,

rico