Montana Title 3. Judiciary, Courts § 3-15-501. Order directing that trial jury be drawn and summoned

(1) If a civil or criminal case has been at issue and ready for trial for more than 6 months and the plaintiff or defendant has requested a jury trial or whenever the business of a district court requires the attendance of a trial jury for the trial of civil or criminal cases and a jury is not in attendance, the court shall order a trial jury to be drawn and summoned to attend before the court. The order must specify the number of jurors to be drawn. The time at which the jurors are required to attend is at the discretion of the court.

(2) The court may direct that a criminal or civil proceeding in which a jury may be required or may have been demanded be continued and fixed for trial at a time when a jury will be in attendance.

(3) The judge or judges of a district or the judge of a department may designate that jury service in the district or department is on a “one-day or one-trial” basis;  that is, each individual juror is excused for the rest of the year after having attended for 1 day and not having been selected to serve at the trial of a particular cause or after having completed service at a trial.

(4) If the number of unexcused jurors is not sufficient to meet current requirements at any time, jurors excused under subsection (3) may be required to serve.