Palmer v Ostrowski

The appeal by the respondent against his conviction in the Magistrates Court for fishing in a closed zone was heard by the Supreme Court of Western Australia. The respondent, a commercial fisherman, was fined after being found to have fished for rock lobsters in a designated closed area. The crux of the dispute was whether the respondent's belief, induced by inaccurate information provided by Fisheries WA, that he was not fishing in a closed zone constituted a valid defence under the principles of law. The court was tasked with determining if the respondent's actions were justified by an honest and reasonable mistake of fact, and whether the inaccurate information supplied by Fisheries WA absolved him of liability.

The primary legal issue before the court was the applicability of a defence based on a mistake of fact in relation to a regulatory requirement. The court considered whether the respondent's belief, though mistaken, was honest and reasonable given the information provided by Fisheries WA. The court also needed to evaluate the effect of the officially induced error on the respondent's culpability, and whether the respondent's actions could be excused under the recognised principles of law for such scenarios. The court had to weigh the respondent's conduct against the statutory requirements and the information he relied upon.

The court found that the respondent's mistake was honest and reasonable, given the reliance on the inaccurate information provided by Fisheries WA. The court held that the respondent's belief that he was not fishing in a closed zone was genuine and based on the information supplied by the relevant authority. The court concluded that the officially induced error of law absolved the respondent of criminal liability. Consequently, the appeal was allowed, the conviction was set aside, and the complaint was dismissed.