Coronavirus Australia: Sydney workers told to stay working from home in case ...

Millions of Sydneysiders have been told to stay locked down at home unless they recently tested negative for Covid. 

Gladys Berejiklian admitted she feared people may be travelling around the city while unknowingly infectious, including essential workers.

The plea comes after contact tracers discovered some of the latest cases in Fairfield had continued to work full shifts in offices for days while infected with the disease.

Included in the latest tally was a visa centre lawyer who worked with the public in Fairfield for six days while infected.

All workers in Sydney should be working from home unless they are essential, such as frontline workers, or their work can't be done from home, such as tradies and shop staff. 

NSW reported 112 new cases on Monday, and Ms Berejiklian warned it is 'almost impossible' for the state to lift restrictions on Friday, July 16 as originally planned.

Some 34 of today's cases were infectious in the community and many of them had continued to turn up for work as normal while capable of spreading the disease.

Ms Berejiklian said lockdown restrictions are unlikely to be lifted until the number of infectious cases in the community hits zero.

But that won't happen if people carry on working while infected - even if they are considered an essential key worker, she said on Monday.

'Even if you regard yourself as an essential worker, especially in the Fairfield local government area, do not leave home if you have symptoms,' Ms Berejiklian pleaded. 

'Do not go to work unless you absolutely know that you don't have the virus.

'Unfortunately, we are seeing very, very key workers leave the home with symptoms or else not knowingly spreading the virus.'