An extended operational period under s 144 of the Penalties and Sentences Act 1992 (Qld) must be justified by reference to one or more of the statutory purposes of sentencing in s 9(1), and must be proportionate to the term of imprisonment imposed; general deterrence and denunciation cannot justify an extended operational period, but personal deterrence, rehabilitation, and community protection may do so where the need is present in the particular case.
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