O'Brien v Australian Broadcasting Corporation

In *O'Brien v Australian Broadcasting Corporation*, the New South Wales Court of Appeal considered a defamation claim brought by a journalist against the Australian Broadcasting Corporation (ABC) concerning a *Media Watch* program that criticised her articles published in *The Sun Herald*. The articles reported on the alleged cover-up of toxic substances found at levels exceeding health limits on land used as a children's playground, and were accompanied by photographs of children in the playground. The plaintiff pleaded imputations of trickery and irresponsible journalism. The ABC sought to rely on several defences, including fair comment at common law, honest opinion under section 31 of the *Defamation Act 2005* (NSW), justification under section 25 of the *Defamation Act 2005* (NSW), and contextual truth under section 26 of the *Defamation Act 2005* (NSW).

The central legal issues before the Court of Appeal were whether the *Media Watch* program's opinions were based on proper material for comment, and whether the imputations pleaded by the plaintiff were substantially true or whether her reputation was not further harmed due to the substantial truth of contextual imputations. The court was required to determine the applicability and success of the various defences raised by the ABC in response to the defamation claim.

The Court of Appeal analysed the evidence concerning the journalist's articles and the *Media Watch* program. It considered the nature of the alleged toxic substances, the testing conducted, and the location of the land in question relative to the playground. The court examined the elements of each defence, particularly the requirement for honest opinion to be based on true facts and for justification to prove the substantial truth of the imputations. The court also considered the concept of contextual truth, assessing whether other imputations made by the *Media Watch* program were substantially true and whether these contextual imputations would have already caused the harm alleged by the plaintiff. The court ultimately found that the defence of honest opinion was not established, as the opinion expressed was not based on true facts. However, the court found that the defence of contextual truth was established, as the plaintiff's reputation was not further harmed by the imputations of trickery and irresponsible journalism because of the substantial truth of other imputations made by the *Media Watch* program.

The Court of Appeal allowed the appeal in part, setting aside the judgment of the trial judge and entering judgment for the defendant, the Australian Broadcasting Corporation.