Mercantile Mutual Insurance (NSW Workers Compensation) Ltd v Murray

Mercantile Mutual Insurance (NSW Workers Compensation) Ltd appealed to the Court of Appeal of New South Wales against an order of the District Court concerning the discoverability of a claims assessor's report. The central dispute revolved around whether this report, prepared by a lawyer appointed by the insurer to assess a workers compensation claim, was protected by legal professional privilege, and if so, to whom that privilege belonged. The insured, Mr. Murray, sought access to the report, while the insurer, Mercantile Mutual, contended it was privileged and belonged to them.

The Court of Appeal was required to determine whether a solicitor-client relationship, and thus legal professional privilege, could be established between the insurer and the lawyer appointed to assess the claim. Further, the court had to consider whether, even if privilege existed, it could operate as between the insured and the insurer, particularly in the context of a joint or common interest privilege. The ultimate question was whether the claims assessor's report was privileged and whether any such privilege vested in the insurer, the insured, or both.

The Court of Appeal reasoned that the relationship between the insurer and the appointed lawyer was one of solicitor and client, giving rise to legal professional privilege. However, the court found that the privilege in this context belonged to the insurer, as they had engaged the lawyer for their own purposes in assessing the claim. While the insured had an interest in the claim, the report was not prepared for the joint benefit of both parties in a way that would create a shared privilege. The court applied principles of legal professional privilege, distinguishing between situations where a lawyer acts for a common interest and where a lawyer is engaged by one party for their own benefit, even if that benefit indirectly affects another party.

Consequently, the Court of Appeal allowed the appeal, setting aside the order of the District Court. The documents produced to the District Court were ordered to be returned to the appellant, Mercantile Mutual Insurance. Liberty was granted to apply within six weeks regarding costs orders for a previously abortive hearing, and the respondent, Mr. Murray, was ordered to pay the appellant's costs of the appeal, with a certificate under the Suitors Fund Act available if qualified.