http://en.wikipedia.org/wiki/Jury_trial#Civil_trial_procedur...
The right to trial by jury in a civil case is addressed by the 7th Amendment, which provides: "In Suits at common law, where the value in controversy shall exceed twenty dollars, the right of trial by jury shall be preserved, and no fact tried by a jury shall be otherwise re-examined in any Court of the United States, than according to the rules of the common law."
Though there are also details that matter. Here's one:
The right to a jury trial in civil cases does not extend to the states, except when a state court is enforcing a federally created right, of which the right to trial by jury is a substantial part.
If you type "Jury trial" into bing, it #2's "in civil cases" and for that you get:
U.S. Constitution extend the rights to trial by jury
to include the right to jury trial for both criminal
and civil matters and a grand jury for serious cases
But see, I suppose there are some places where even a conversation like this could get us in jail, so maybe we shouldn't be having it... I don't know...