Introduction
Negligence, a core concept in tort law, requires establishing a duty of care, a breach of that duty, causation, and resulting damage. Among these elements, causation is often the most complex to prove, as it demands a direct link between the defendant’s actions and the harm suffered by the claimant. Central to this determination is the ‘but for’ test, a fundamental legal principle used to assess factual causation. This essay aims to define the ‘but for’ test, explain its role in negligence cases, and illustrate its application within the Malaysian legal context through relevant case law. By exploring both the theoretical framework and practical application, the essay seeks to provide a sound understanding of how causation is determined in negligence claims, while acknowledging potential limitations of the test.
Understanding the ‘But for’ Test
The ‘but for’ test is a foundational tool in establishing factual causation in negligence law. It posits that a defendant’s act or omission is the cause of the claimant’s harm if, but for that act or omission, the harm would not have occurred (Hart and Honoré, 1985). In essence, it asks whether the damage would still have happened had the defendant not breached their duty of care. If the answer is no, the defendant’s conduct is deemed a factual cause of the harm. This principle is widely applied across common law jurisdictions, including Malaysia, which inherits much of its legal framework from English common law due to its colonial history.
While the ‘but for’ test provides a straightforward method for establishing causation in many cases, its application can be limited in scenarios involving multiple causes or complex chains of events. For instance, it may fail to adequately address situations where concurrent or successive causes contribute to the harm. Nevertheless, it remains the starting point for causation analysis in negligence claims, offering a clear and logical framework for initial assessment.
Application of the ‘But for’ Test in Malaysia
In the Malaysian context, the ‘but for’ test is consistently applied in negligence cases to determine whether a causal link exists between the defendant’s breach and the claimant’s damage. A notable illustration of this is the case of *Ng Chun Piao v Lee Chuen Tat* (1988), decided by the Malaysian Federal Court. In this case, the claimant was involved in a road accident where the defendant’s negligent driving was alleged to have caused the collision. The court applied the ‘but for’ test to establish factual causation, questioning whether the accident would have occurred had the defendant driven with reasonable care. The court concluded that, but for the defendant’s failure to observe traffic rules, the collision would not have taken place, thereby affirming causation (Phang, 1990).
This case demonstrates the practical utility of the ‘but for’ test in attributing responsibility in straightforward negligence claims. However, it also highlights the test’s limitations, as the court had to consider whether other contributing factors—such as the claimant’s own actions—might have influenced the outcome. Despite such challenges, the test provided a clear basis for the court’s reasoning, underscoring its importance in Malaysian tort law.
Critical Evaluation and Limitations
While the ‘but for’ test offers a logical and accessible approach to determining causation, it is not without flaws. In cases involving multiple causes, as occasionally seen in Malaysian jurisprudence, the test may struggle to isolate a single cause of harm. For instance, in medical negligence or industrial injury cases, harm might result from a combination of factors, rendering the ‘but for’ test less effective. Courts may then rely on alternative tests, such as the ‘material contribution to risk’ principle, to address such complexities. Nevertheless, the test remains a cornerstone of causation analysis, providing a foundation upon which more nuanced approaches can be built (Fleming, 1998). Furthermore, its consistent application in Malaysian courts indicates its relevance and adaptability within the local legal system, even if occasionally supplemented by judicial discretion.
Conclusion
In conclusion, the ‘but for’ test serves as a critical mechanism for establishing factual causation in negligence law by assessing whether harm would have occurred absent the defendant’s breach of duty. Its application in the Malaysian context, as illustrated by *Ng Chun Piao v Lee Chuen Tat* (1988), demonstrates its practical significance in attributing liability in clear-cut cases. However, its limitations in addressing complex, multi-causal scenarios highlight the need for judicial flexibility and supplementary principles. For students of business law, understanding the ‘but for’ test is essential, as it not only underpins causation analysis but also reflects the broader challenges of balancing legal certainty with fairness in negligence claims. Indeed, while the test is not exhaustive, its role in shaping legal outcomes in Malaysia and beyond remains undeniable, offering a starting point for navigating the intricacies of tort law.
References
- Fleming, J.G. (1998) The Law of Torts. 9th ed. Sydney: LBC Information Services.
- Hart, H.L.A. and Honoré, T. (1985) Causation in the Law. 2nd ed. Oxford: Clarendon Press.
- Phang, A. (1990) The Development of Tort Law in Malaysia. Singapore: Butterworths Asia.

