Factual and Procedural Background
The Appellant worked for the Respondent at a brickworks where he was required to enter hot brick kilns, remove newly baked bricks, and was exposed to substantial heat, dust and ash. After several consecutive days of this work in April 1967, the Appellant developed a severe skin condition eventually diagnosed as occupational dermatitis.
The Appellant sued for damages, alleging breaches of common-law duties of care. A proof before answer was heard before Judge [Last Name] (“the Lord Ordinary”), who found that although the dermatitis arose from the work environment, the Appellant had not proven that any breach by the Respondent caused or materially contributed to the disease. Judgment was entered for the Respondent.
The Appellant’s reclaiming motion to the First Division of the Court of Session was refused. The Appellant then appealed to the ultimate appellate court, which delivered its decision on 15 November 1972.
Legal Issues Presented
- Whether the Respondent breached its common-law duty by failing to allow the kiln to cool “sufficiently” before workers entered.
- Whether the Respondent breached its common-law duty by failing to provide adequate washing facilities, including showers, soap and towels.
- Whether, in law, proof that a breach materially increased the risk of contracting dermatitis is sufficient to satisfy the requirement that the breach “caused or materially contributed to” the injury.
Arguments of the Parties
Appellant's Arguments
- The Respondent should not have sent workers into the kiln until conditions were cool enough to dispense with the fan that stirred up abrasive dust.
- The Respondent had long known that immediate washing facilities were a standard precaution in dusty, high-heat industries and was therefore in breach for failing to reinstall showers after earlier facilities became unavailable.
- Medical evidence showed that lack of showers materially increased the risk of contracting occupational dermatitis; under decisions such as Wardlaw v Bonnington Castings, a material increase in risk is equivalent to a material contribution to injury.
Respondent's Arguments
- The pleadings concerning the required degree of kiln cooling were vague and unsupported by evidence of practicability or industry practice.
- Although showers might reduce risk, the Appellant failed to prove on the balance of probabilities that the absence of showers would probably have prevented the disease; an increase in risk is conceptually different from causation.
- The pneumoconiosis authorities relied upon by the Appellant were distinguishable because they involved quantifiable exposures to “guilty” and “innocent” dust, unlike the present dermatitis mechanism.
Table of Precedents Cited
| Precedent |
Rule or Principle Cited For |
Application by the Court |
| Wardlaw v. Bonnington Castings (1956 S.C. (H.L.) 26) |
A defender is liable if their breach made a material contribution to injury, even where other innocent causes are present. |
The majority treated a material increase in risk as indistinguishable from a material contribution and relied on this case to impose liability. |
| Nicholson v. Atlas Steel Foundry and Engineering Co. (1957 S.C. (H.L.) 44) |
Failure to reduce dust levels, thereby increasing risk, can constitute a material contribution to pneumoconiosis. |
Used by the majority as an analogy showing that employers who leave workers exposed to materially increased risk are liable. |
| Gardiner v. Motherwell Machinery Co. (1961 S.C. (H.L.) 1) |
Recognition that kiln conditions created a risk of occupational dermatitis. |
Cited to establish that the Respondent was aware of the occupational hazard. |
| O’Donnell v. Murdoch Mackenzie & Co. (1967 S.C. (H.L.) 63) |
The court may draw adverse inferences where an employer leads no evidence about its system of work. |
Relied upon by the Appellant at first instance to argue that fault could be inferred. |
| English v. Wilsons & Clyde Coal Co. (1937 S.C. (H.L.) 46) |
Articulates the employer’s overarching duty to take reasonable care for employee safety. |
Referenced to define the scope of the Respondent’s common-law duty. |
| Alphacell Ltd. v. Woodward (quotations within opinion) |
Emphasises a commonsense approach to legal causation. |
Cited by one Judge [Last Name] in support of treating increased risk as causation. |
Court's Reasoning and Analysis
The appellate court unanimously rejected the “kiln cooling” allegation, agreeing with the lower courts that the pleadings lacked specification and that no practicable evidence existed to support the duty asserted.
On the washing-facilities allegation, the court accepted the findings that:
- The Respondent owed and breached a duty to provide showers, a recognised precaution in dusty, high-heat work.
- Medical experts on both sides agreed that immediate showering would “materially reduce” the risk of dermatitis, even though they could not say it would probably have prevented this particular case.
The majority re-examined the causation standard. They held that where a defender’s breach materially increases the risk of injury of the very kind that in fact occurs, the breach should be regarded as having materially contributed to the injury. Requiring the victim to prove that, on balance, the injury would probably have been avoided would impose an impossible burden in situations where medical science cannot isolate precise mechanisms.
The court analogised the present facts to the pneumoconiosis decisions, emphasising that both involve indivisible cumulative processes in which fault and non-fault factors interact. From a “broad, practical viewpoint,” the majority saw no real distinction between risk-increase and causal contribution.
The Respondent had not displaced the inference that its admitted breach played a substantial part in the onset of the Appellant’s dermatitis. Accordingly, causation was satisfied.
Holding and Implications
Appeal allowed; judgment entered for the Appellant.
The Respondent is liable in damages because its failure to provide showers materially increased the risk of the Appellant contracting dermatitis, which the court equated with a material contribution to the disease. The decision clarifies United Kingdom causation doctrine: in occupational-disease cases, a material increase in risk created by the defendant’s breach can satisfy the “material contribution” test, easing the evidential burden on employees where scientific certainty is unattainable.