Colonial Mutual Life Assurance Society Ltd v Producers and Citizens Co-Operative Assurance Co of Australia Ltd

The appellant, Colonial Mutual Life Assurance Society Ltd., appealed to the High Court of Australia from a decision of the Supreme Court of South Australia. The respondent, Producers and Citizens Co-operative Assurance Co. of Australia Ltd., had sued the appellant for slander, alleging that its agent, one Charles Ridley, had made defamatory statements about the respondent while attempting to solicit insurance business for the appellant. The Supreme Court had found the appellant liable for these slanders.

The central legal issue before the High Court was whether the appellant was vicariously liable for the defamatory statements made by Ridley, who was engaged as a canvasser and agent under a written agreement. The agreement stipulated that Ridley would not use language that could reflect upon the character or integrity of any person or institution, yet he made statements imputing insolvency to the respondent company. The appellant argued that Ridley was an independent agent, not a servant, and therefore the appellant was not liable for his tortious acts.

A majority of the High Court (Gavan Duffy C.J., Rich, Starke, and Dixon JJ.) affirmed the decision of the Supreme Court, holding the appellant liable for the slanders. The Court reasoned that Ridley, in his role as a canvasser, was not acting independently but as a representative of the appellant. He was entrusted with the task of conducting negotiations on behalf of the appellant, and in doing so, he spoke with the appellant's voice. The Court applied the principle that a principal is liable for the tortious acts of an agent if the act is within the scope of the agent's authority, even if the principal expressly directed the agent not to commit such an act. The prohibition against disparaging language was considered a stipulation on the manner of exercising authority, not a limitation of the authority itself.

The appeal was dismissed, and the judgment of the Supreme Court of South Australia, which had awarded £1,000 in damages to the respondent, was affirmed.