Australian national firm Clayton Utz has told its staff in Sydney to work from home after one of its employees said he may have been indirectly exposed to Coronavirus.

"One of our Sydney employees notified us overnight that he may indirectly have been exposed to the virus. He immediately self-isolated and we have taken a range of precautionary measures including asking our Sydney employees to work from home, and suspending an on-site client event," Clayton Utz said in a statement on Thursday afternoon.

"We will be updating our employees and clients once we know more this evening. Their health and safety is our priority which is why we've been pro-active in managing any potential risk."