The Court convenes in the Illinois Supreme
Court Building in Springfield on the second
Monday in the months of September,
November, January, March, and May. The
length of each session depends upon the
matters before the Court. Between sessions,
Justices are concerned with reviewing briefs,
pleas and motions for forthcoming sessions,
and with the preparation and review of Court
A quorum of four Justices is required for
transaction of Court business and there must
be agreement among at least four Justices on
any decision or opinion rendered by the
Court. The Justices select one of their
members to serve as Chief Justice for a term
of three years.
The Chief Justice occupies the center chair
behind the bench in the Courtroom, with the
other Justices seated alternately to the
Chief's right and left in order of their
seniority. The Marshal of the Court and the
clerk of the Court sit at desks facing each
other before the bench.
Persons addressing the Court use the center
table and lectern. Tables are provided for
opposing counsel near the lectern.
Normally, 50 minutes per case is allotted for
oral argument. This time is divided between
counsel with 20 minutes allowed for opening
argument, 20 minutes for reply, followed by
10 minutes for rebuttal. Capital cases are
allotted 70 minutes. Upon request, additional
time may be extended in any case.