The worker, a Royal Australian Air Force technician, suicided while on duty at the base on July 28, 2020.

The Commonwealth Director of Public Prosecutions has filed three charges alleging Defence failed in its primary duty under the federal Work Health and Safety Act 2011 to manage risks to psychological health and safety.

They related to alleged failures in the administration of workplace policies and procedures to provide safe systems of work, necessary training to workers, and information necessary to protect all persons from risks to their health and safety.

The charges include one 'Category 2' offence, carrying a maximum penalty of $1.5 million, and two 'Category 3' offences, each carrying a maximum penalty of $500,000. They are listed for mention in Maitland Local Court on September 29.

In a statement issued on Tuesday, a spokesperson said Defence offered its sincere condolences to "the family of the Defence member".

"The Defence community remains deeply saddened by the tragic death of one of its members, and continues to provide support to their family," the statement said.

"As the matter is subject to legal proceedings, it would be inappropriate for Defence to make any further comment.

"The safety of our people is paramount in all activities undertaken by Defence, and critical to our mission of defending Australia and its national interests.

"Defence continues to work closely with the Commonwealth Work Health and Safety Regulator, Comcare, in relation to all serious safety incidents."

IN OTHER NEWS

In another statement issued by the Commonwealth, the federal government said Deputy Prime Minister and Minister for Defence Richard Marles had himself spoken to the Chief of the Defence Force and been reassured that Defence has and would continue to cooperate with the Comcare investigation.

"We understand the seriousness of this tragic situation which took place two years ago regarding a member of Defence, and offer condolences and support to their family," the statement said.

"The Albanese Labor Government is committed to the Royal Commission into Defence and Veteran Suicide, and effecting cultural reform and meaningful change within the ADF."