An ABC staffer has won the latest stage of a six-year fight for compensation after her treatment at work left her suffering anxiety and depression.

Peta Martin has been absent from the national broadcaster's studios in Renmark, South Australia since what she described as a "breakdown" in 2012 that followed more than 18 months of alleged bullying.

She stopped working after she failed to secure a new permanent job in the ABC that she hoped would move her away from her manager, who she said was bullying her.

The Administrative Appeals Tribunal on August 3 found the federal workplace insurer was wrong to deny her compensation and said it owed her this for the "adjustment disorder" that followed her employment with the ABC.

Lawyers for Ms Martin, who saw her case move up to the High Court before it returned to the appeals tribunal, warn that her battle may not be over as Comcare could appeal the decision or reject her later claims for rehabilitation and treatment.