The state's Supreme and District Courts will be allowed to order as many as three extra jurors for trials expected to run to least four weeks, as the judicial system adapts to the COVID-19 pandemic.
NSW Attorney General Mark Speakman said the change was necessary in order to address potential increases in juror absences because of coronavirus.
It is aimed at increasing the likelihood that trials will have enough jurors to reach a verdict even if jurors become ill or display signs of COVID-19.
Mr Speakman said extra jurors would not be necessary for every trial, but the courts would have the power to decide on a case-by-case basis.
"Preventing any further delays to Supreme and District Court trials is a priority," he said.
"Allowing the flexibility of an expanded jury for shorter trials is a practical measure to ensure there are fewer disruptions to the delivery of justice."
Jury trials across the state were suspended between March 16 and June 15 because of the global health crisis.
"Juror seating arrangements in courtrooms have been modified to accommodate the additional jurors," Mr Speakman said.
"Potential jurors are advised before the hearing that they should not attend court if they are unwell."
