The governing body for the sport have slammed the decision to only allow junior players onto the courts in a letter penned to the government just a matter of hours after Tuesday's announcement.

The letter says that senior players are the backbone of clubs, associations and competitions.

"Netball NSW has been proactive in working with stakeholders, including our valued clubs and associations, to ensure safe and innovative approaches are taken to competitions in 2020," it read.

"It is unfathomable that as shopping centres start to look like it's Christmas Eve, and pubs can allow up to 50 people, adults can't participate in sport."

Netball NSW unsuccessfully reached out for a meeting with either the NSW chief medical officer or health minister.

Netball NSW expressed the importance of communication and clarity from the government due to the game's financial situation.

"There are many sporting organisations on the brink of insolvency who may now have to refund every dollar to senior players. It is a financial disaster for community sport," they said.

"All sports need financial recovery assistance urgently. The State Government requested, and received, detailed financial information eight weeks ago, but no progress has been made.

"It is very important to note that Netball NSW is not in the business of profit to pay huge wages of a tiny minority of elite athletes at the pointy end. Our elite and community games share a deep bond, as last week's letter to the Premier highlighted."