The express statutory scheme distinguishes the summary, managerial character of the removal action process before the Commissioner (which contains only a 21-day response period under s 33L(2)) from the detailed adjournment regime for IRC appeals (s 33T), reflecting Parliament's intention that Commissioner need not await criminal outcomes.

A statutory regime governing public sector employment relationships and discipline requires compliance with applicable statutory procedures and natural justice principles; non-compliance with substantive statutory requirements may render a decision ultra vires and void ab initio.

In public sector employment relationships governed by statutory regime, statutory provisions are quasi-judicial in nature and must be exercised in accordance with relevant statutory procedures and principles of natural justice. Where statutory requirements are substantive preconditions to jurisdiction and are not complied with, action taken is ultra vires and void.