Railcorp NSW v Registrar of the WCC of NSW

Railcorp NSW filed an application for judicial review against the Registrar of the Workers Compensation Commission of New South Wales, challenging the Registrar’s decision to appoint an Approved Medical Specialist and issue a Medical Assessment Certificate. The central dispute involves the validity of the Registrar's reconsideration process and the subsequent appointment of Dr Harvey-Sutton as the Approved Medical Specialist, as well as the Medical Assessment Certificate issued by Dr Harvey-Sutton. The case was heard and determined by the court of appeal in New South Wales.

The court had to decide whether the Registrar acted outside her statutory powers when she failed to reconsider the appointment of an Approved Medical Specialist and whether issue estoppel applied to prevent Railcorp from challenging the decision. The primary legal issue was whether the Registrar's failure to reconsider the appointment on 30 September 2011 constituted a jurisdictional error, and if so, whether this error rendered the subsequent decision to appoint Dr Harvey-Sutton on 7 November 2011 invalid. The court also needed to examine if the Registrar could be estopped from asserting that the appointment of Dr Harvey-Sutton was valid, given Railcorp's previous stance that the Registrar had the power to reconsider the appointment.

The court found that the Registrar had indeed acted outside her statutory powers by failing to reconsider the appointment of an Approved Medical Specialist on 30 September 2011. The Registrar mistakenly denied her power to reconsider an earlier decision, which led to a jurisdictional error. However, the subsequent decision to appoint Dr Harvey-Sutton on 7 November 2011 was held to be a valid exercise of reconsideration by the Registrar under the Workers Compensation Act. The court ruled that although there was a jurisdictional error in the initial decision, the later decision to appoint Dr Harvey-Sutton should stand as it was a proper exercise of the Registrar's statutory powers. The court also found that issue estoppel did not apply in this case, allowing the Registrar to challenge the decision to appoint Dr Harvey-Sutton.

The final orders of the court were that the decision of the Registrar to appoint Dr Harvey-Sutton as the Approved Medical Specialist on 7 November 2011 was valid and should stand. The Registrar was not estopped from asserting the validity of this decision. The court did not quash the Registrar's decision but affirmed its validity, notwithstanding the earlier jurisdictional error.