Deputy Prime Minister Richard Marles’ former chief of staff has launched legal action against her employer over alleged bullying incidents while working in the office.

Jo Tarnawsky says she has lodged a case in the Federal Court against Marles, the federal government and Tim Gartrell, the Prime Minister’s chief of staff, following a stalemate in resolving a workplace claim.

Tarnawsky alleged she was ousted from her position after raising the bullying allegations.

Neither Marles nor Gartrell were alleged to be involved in the bullying.

Tarnawsky said the federal government’s delay in resolving the issue was untenable and she had been “exiled” for speaking up.

“After the window dressing of parliamentary workplace reforms has been put in place, the government is now testing in real time exactly what it can still get away with,” she said in Canberra on Monday.

“But if the government won’t hold its own poor behaviour to account, then I will ask the courts to do that.

“It should not be unreasonable for any of us to expect to depart our roles with dignity; to walk away better from our time working in this building, rather than carrying life-long trauma from the poor treatment we have endured here.”

Lawyers for Tarnawsky claimed the government had carried out an adverse action under the Fair Work Act for having pushed her out of her position after raising the bullying concerns.

At the time the claims became public in October, Marles said he was satisfied the ministerial code of conduct had not been breached and he was grateful for Tarnawsky’s service.

“She is a person who is completely committed to social justice in this country and I very much admire her … I feel very sad that events have got to where they have. It is obviously very difficult,” he told Parliament at the time.

“The way in which I have tried to manage this, I have done so with Jo’s welfare in mind at every moment, as I would try to manage things on that basis for all of my staff.”

Tarnawsky said the legal action was lodged following delays from the government to resolve her complaints.

“The government has been afforded multiple opportunities to rectify the wrongs done to me. But it has done nothing except duck and cover, collude and delay,” she said.

“Two hundred days is too many. I am not waiting any longer. This matter will now be fully aired in court.”

Marles has been contacted for comment.

-AAP