(3) Vicarious liability
34 The third defendant submitted that because the plaintiff admits that she was employed by the first defendant, there is a non-delegable duty of care in the context of a master and servant relationship and the third defendant should not be joined as a defendant.
35 The concept of a non-delegable duty of care has been discussed in a number of High Court decisions (see Kondis v State Transport Authority (1984) 154 CLR 672, Burnie Port Authority v General Jones Pty Ltd (1994) 179 CLR 520, Northern Sandblasting Pty Ltd v Harris (1997) 188 CLR 313 and Scott v Davis [2000] 175 ALR 217, [2000] HCA 52 at [245]-[249]; [307]-[308]; [353]). Employers, hospitals and school authorities are the clearest categories of relationships giving rise to such a duty.
36 In a recent Court of Appeal case, Lepore v State of New South Wales & Anor [2001] NSWCA 112 Mason P stated that the expression "non-delegable duty" is somewhat misleading. It implies that a person cannot delegate a duty, but the truth is that the person cannot avoid liability by relying on the delegation, even to a competent delegate. A non-delegable duty is said to be personal or direct, rather than vicarious, but even this difference is more semantic than substantial.
37 Mason P quoted remarks made by Giles JA (Handley JA and Stein JA agreeing) in Elliott v Bickerstaff (1999) 48 NSWLR 214 at 236-8. Giles JA said at 238:
"Where the person owing the duty of care must ensure that the third party exercise reasonable care, and is liable if the third party does not do so, it can be seen why the non-delegable duty of care has been described as a disguised form of vicarious liability (J G Fleming, The Law of Torts, 9th ed (1998) Sydney, LBC at 434) and even as a logical fraud (G Williams, "Liability for Independent Contractors" (1956) Cam LJ 180 at 193). The person who owes the non-delegable duty of care may be liable without fault, whether personal or of a servant or agent. Although conceptually the breach of duty will be a breach of that person's duty of care, the so-called duty of care in truth is not a duty to take care but a mechanism for responsibility for someone else's failure to take care. The concept of non-delegable duty of care has nonetheless been recognised for over a century (see Pickard v Smith (1861) 10 CB (NS) 470; 142 ER 535; Dalton v Henry Angus & Co (1881) 6 App Cas 740), and is thoroughly established in the law including in the decisions of the High Court. Indeed, it extends to liability for the failure to take care of third parties who are not independent contractors, in the traditional sense: eg Commonwealth v Introvigne (1982) 150 CLR 258.
38 In Burnie Port Authority the High Court affirmed that the master and servant relationship forms part of the closed list of categories of non-delegable duties that exist at law (see Mason CJ, Deane, Dawson, Toohey, Gaudron JJ at 550).