Kloren and Comcare (Compensation)

This matter came before the Administrative Appeals Tribunal (AAT) concerning a dispute between Mr Kloren and Comcare. Comcare sought to have the application dismissed, arguing that the Tribunal lacked jurisdiction to hear the matter as it concerned the implementation of a previous consent decision, rather than a reviewable decision under the relevant legislation.

The primary legal issues before the Tribunal were whether it possessed jurisdiction to consider a matter that involved the implementation of a prior consent decision, and whether the principles of estoppel, or equivalent mechanisms, applied to prevent the relitigation of issues already determined by the Tribunal. The Tribunal was also required to consider the scope of its powers to manage its own processes, particularly in relation to dismissing matters that had been finally decided.

The Tribunal acknowledged that its jurisdiction is generally limited to reviewing decisions made under an enactment. However, it noted that the *Administrative Appeals Tribunal Act 1975* (Cth) grants it broad powers under sections 33, 42A, and 42B to manage its own processes, which can be used to address concerns similar to those addressed by doctrines like res judicata and issue estoppel in courts. While the strict application of estoppel to administrative tribunals remains debated, the Tribunal found it had the power to dismiss matters that had already been finally decided and were being relitigated. A significant constraint on this power, however, arises from legislation like the *Safety, Rehabilitation and Compensation Act 1988* (Cth) (SRC Act), which provides for the ongoing determination and reconsideration of entitlements, allowing for review of previously determined matters in certain circumstances, such as a change in a claimant's condition or the emergence of new evidence. The Tribunal indicated it might permit relitigation where there is a new decision, clear legislative intent for reconsideration, a change in circumstances, new evidence, or where justice requires it.