Twentyman v Secretary, Department of Social Services

The case of Twentyman v Secretary, Department of Social Services involved an application by Mr Twentyman to appeal against the decision of the Administrative Appeals Tribunal (AAT) to dismiss his challenge to the cancellation of his disability support pension. The primary issue before the court was whether Mr Twentyman should be granted an extension of time to file his appeal from the AAT's decision, and if the appeal itself had any merits. The court had to determine if Mr Twentyman had provided an adequate explanation for the delay in filing the appeal, whether the grounds of appeal were at least arguable, and if the AAT's decision to cancel his pension was rational and proportionate.

The court found that Mr Twentyman's explanation for the delay in filing the appeal was adequate, given the complexity of the case and the difficulties in obtaining relevant documentation from the Department. The court also concluded that the grounds of appeal were at least arguable, particularly in relation to the AAT's interpretation of the applicable law and the adequacy of the reasons provided for the cancellation decision. The court held that the AAT's decision to cancel Mr Twentyman's pension was rational and proportionate, as it was based on the finding that Mr Twentyman had failed to comply with a notice given under the Social Security (Administration) Act 1999 (Cth).

Accordingly, the court granted Mr Twentyman an extension of time to file his appeal and dismissed the appeal with costs. The court found that the AAT's decision to cancel Mr Twentyman's pension was not affected by any alleged procedural unfairness, as the AAT had exercised its discretion to cancel the pension reasonably. The court also held that the rule in Browne v Dunn did not apply to the review proceedings in the AAT, and that s 2A of the Administrative Appeals Tribunal Act 1975 (Cth) did not import a rule akin to Browne v Dunn. The court further found that the AAT's decision to cancel Mr Twentyman's pension was not affected by any error of law, as the AAT had correctly interpreted the applicable law and applied it to the facts of the case.