Okla. Const. art. II, § 19
The right of trial by jury shall be and remain inviolate, except in civil cases wherein the amount in controversy does not exceed One Thousand Five Hundred Dollars ($1,500.00), or in criminal cases wherein punishment for the offense charged is by fine only, not exceeding One Thousand Five Hundred Dollars ($1,500.00). Provided, however, that the Legislature may provide for jury trial in cases involving lesser amounts. Juries for the trial of civil cases, involving more than Ten Thousand Dollars ($10,000.00), and felony criminal cases shall consist of twelve (12) persons. All other juries shall consist of six (6) persons. However, in all cases the parties may agree on a lesser number of jurors than provided herein.
In all criminal cases where imprisonment for more than six (6) months is authorized the entire number of jurors must concur to render a verdict. In all other cases three-fourths (3/4) of the whole number of jurors concurring shall have power to render a verdict. When a verdict is rendered by less than the whole number of jurors, the verdict shall be signed by each juror concurring therein.
Amended by Laws 1951, HJR 2, Section 1, State Question 354, Legislative Referendum 101, adopted at primary election held July 1, 1952; Amended by Laws 1968, HJR 559, Section 1, State Question 459, Legislative Referendum 172, adopted at election held September 17, 1968; Amended by Laws 1989, SJR 17, Section 1, State Question 623, Legislative Referendum 277, adopted at election held August 28, 1990.