Caltex Oil (Australia) Pty Ltd v Best

Caltex Oil (Australia) Pty Ltd appealed to the High Court of Australia against a decision of the Supreme Court of New South Wales. The dispute concerned the liability of Caltex for injuries sustained by Mr. Best, a contractor, who fell from a ladder while working on a Caltex refinery. Mr. Best alleged that Caltex had breached its duty of care by failing to provide a safe system of work, specifically by not ensuring the ladder was properly secured.

The High Court was required to determine whether Caltex owed a duty of care to Mr. Best, a contractor engaged by a third party, and if so, whether that duty had been breached. Central to the determination was the extent of Caltex's control over the work being performed by Mr. Best and the nature of the risk involved. The court also considered the principles of vicarious liability and the application of the Occupiers' Liability Act 1965 (NSW) in the context of a contractor working on the occupier's premises.

The majority of the High Court held that Caltex did owe a duty of care to Mr. Best. Their Honours reasoned that Caltex, as the occupier of the premises and the party with ultimate control over the refinery operations, had a non-delegable duty to ensure that the work carried out on its premises was conducted with reasonable care for the safety of those, like Mr. Best, who were lawfully present. This duty extended to ensuring that the system of work, including the provision and securing of equipment such as ladders, was safe. The court found that Caltex had failed to discharge this duty, as it had not taken sufficient steps to ensure the ladder was properly secured, thereby creating an unreasonable risk of harm to Mr. Best.

The High Court allowed the appeal in part, finding that while Caltex was liable, Mr. Best had contributed to his own injuries through contributory negligence. The damages awarded were therefore reduced accordingly.