Vicarious liability under s 88 of the Pawnbrokers and Second-hand Dealers Act 1994 (WA) is derivative: if the employee has not committed an offence (including by reason of the defence of honest and reasonable mistake of fact under s 24 of the Criminal Code), the employer cannot be vicariously liable. On a prosecution of the employer under s 88, the employer is entitled to adduce evidence going to whether the employee committed the underlying offence, including evidence raising a s 24 defence in respect of the employee's conduct. A magistrate who prevents such evidence from being adduced commits an error of law. The fact that a magistrate has heard a previous case involving the same witness and made a finding adverse to that witness on a peripheral point does not, without more, give rise to a reasonable apprehension of bias.
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