New South Wales recorded its first Omicron-related death on Monday as the state's Covid outbreak grew by 6324 new cases.
The man in his 80s from western Sydney died at Westmead Hospital. He was among three deaths recorded.
There are currently 520 Covid cases admitted to hospital in NSW, with 55 people in intensive care, 17 of whom need ventilation.
New restrictions have now come into force for the holiday season as the state battles to contain a huge surge coronavirus cases.
Masks are compulsory in all indoor, non-residential settings, including for hospitality staff and in offices, unless eating or drinking.