Unanimity has long been considered as essential and fundamental part of jury trials. Unanimous decisions refer to the nature of the decision reached by a jury. All jury members must be in agreement as to the innocence or guilt of the accused in criminal cases or as to the liability of the defendant in civil cases. Where all are in agreement, the verdict is said to be unanimous. A unanimous verdict must be given in a criminal proceedings involving treason or murder. In all other criminal offences a majority decision out of twelve, will be accepted.
Unanimity not only ensures that the minority viewpoint is heard, it gives people in the minority a vote of value, and hence enhances the representative character of the jury by ensuring the participation by individual citizens on the jury is real rather than illusionary. If a unanimous verdict is achieved, then in theory it corresponds to the level of proof required- in criminal offences being beyond reasonable doubt. Finally, the requirement of unanimous verdict ensures that the representative character and the collective nature of the jury are carried forward into the definitive verdict.
On the other hand, there is a requirement of unanimity in jury decisions which creates delays in decisions and increases the cost of trials. When a jury cannot reach a unanimous decision it will be discharged