Factual and Procedural Background
This case concerns a claim for damages arising from the death of the deceased from mesothelioma on 5 April 2022. The claim is brought by the deceased's widow as executrix of his estate pursuant to the Law Reform (Miscellaneous Provisions) Act 1934 and as his dependent under the Fatal Accidents Act 1976.
The claimant alleges that the deceased was exposed to asbestos dust and fibres while employed by the defendant between approximately 1956 and 1959 during construction work at a school in The City. It is claimed that this occupational exposure caused the deceased to contract mesothelioma.
The claim is brought under both common law negligence and the Building (Safety, Health and Welfare) Regulations 1948, though it is agreed that the latter impose no different or higher standard than common law negligence. The defendant is unable to admit the employment or its capacity due to lack of records and dissolution of the company. The claimant bears the burden of strict proof regarding exposure and breach of duty.
The diagnosis of mesothelioma is undisputed, but the quantum of damages remains an issue to be addressed after breach of duty is determined. The key evidence includes two witness statements from the deceased, admitted under the Civil Evidence Act, and expert reports from occupational hygienists instructed by both parties.
The deceased described exposure to asbestos dust primarily arising from supervising carpenters cutting asbestos insulation boards (Asbestolux) and sweeping up the resulting dust and debris, without any protective equipment or measures to reduce exposure.
Legal Issues Presented
- The extent, degree, and frequency of the deceased's exposure to asbestos dust;
- Whether such exposure amounted to a breach of duty, considering what was known or ought to have been known by the defendant about the risks of injury from asbestos dust exposure.
Arguments of the Parties
Appellant's Arguments
- The claimant urges acceptance of the deceased's witness statements at face value, emphasizing the absence of direct contradictory evidence.
- The claimant submits that the deceased was exposed to significant quantities of asbestos dust daily.
- It is argued that even low-level exposure should have led the defendant to take precautions, based on knowledge from as early as 1930 that asbestos dust was harmful and that exposure should be reduced as far as practicable.
- The claimant relies heavily on the case of Jeromson, which established that employers should have taken precautions due to uncertainty about safe exposure levels.
- The claimant also cites Owen and Maguire cases to support the proposition that from the mid-1950s employers should have kept asbestos exposure as low as possible.
- The claimant rejects the defendant's expert conclusion that only heavy and prolonged exposure was harmful, advocating a precautionary approach to all appreciable asbestos dust exposure.
Respondent's Arguments
- The defendant accepts that exposure levels were very low based on expert consensus.
- It is submitted that general knowledge at the time did not encompass an appreciation that intermittent, sporadic exposure posed significant risk.
- The defendant argues that the deceased was not directly handling asbestos and that the industry practice at the time was not bad practice.
- Reliance is placed on the case of Asmussen and the Supreme Court decision in Baker v Quantum Clothing Group, emphasizing that foreseeability of injury is judged by the well-informed employer standard, not hindsight.
- The defendant points to cases such as Heward and Abraham where low-level intermittent exposure did not give rise to breach of duty.
- It is contended that the construction industry in the late 1950s would not have been alerted to dangers from such low-level exposure and thus no precautions were expected.
Table of Precedents Cited
| Precedent |
Rule or Principle Cited For |
Application by the Court |
| Stokes v Guest, Keen and Nettlefold [1968] 1 WLR 1776 |
Standard of reasonable and prudent employer taking positive thought for safety based on actual or constructive knowledge. |
Used to establish the legal test for foreseeability and duty of care in evolving knowledge contexts. |
| Thompson v Smiths Shiprepairers [1984] QB 405 |
Employer's duty judged by what was known or ought to have been known about risks. |
Supported the application of the reasonable employer standard regarding asbestos risks. |
| Page v Smith [1996] 1 AC 190 |
Foreseeability of some pulmonary injury sufficient to establish duty, not necessarily the precise injury. |
Clarified that foreseeability of any pulmonary harm suffices for liability. |
| Shell Tankers (UK) Limited v Jeromson [2001] EWCA Civ 101 |
Employers must reduce asbestos exposure to the greatest extent possible given uncertainty about safe levels. |
Distinguished significant exposure cases and confirmed duty to take precautions despite lack of precise safe exposure thresholds. |
| Owen v IMI Yorkshire Copper Tube (unreported, 1995) |
Exposure to asbestos should be kept as low as reasonably practicable from mid-1950s onwards. |
Approved as authority for evolving knowledge and precautionary duty. |
| Maguire v Harland and Wolff PLC [2005] EWCA Civ 1 |
Exposure should be minimised; dissenting opinion recognized duty of care in secondary exposure cases. |
Used to support the proposition that from mid-1950s exposure should be kept low. |
| Bussey v Anglia Heating Limited [2018] EWCA Civ 243 |
No bright line safe exposure level; foreseeability judged by reasonable employer knowledge and practices of the time. |
Confirmed that exposure below certain thresholds does not automatically preclude liability; nuanced approach required. |
| Williams v University of Birmingham [2011] EWCA Civ 1242 |
Clarified that exposure below certain guidance levels is not a conclusive bar to liability. |
Referenced in Bussey to reject bright line rules on exposure limits. |
| Hawkes v Warmex Limited [2018] EWHC 205 |
Employers must reduce asbestos exposure where appreciably hazardous, despite uncertainty on safe levels. |
Supported claimant's argument on duty to reduce exposure even at low levels. |
| Asmussen v Filtrona (UK) Limited [2011] 2 All ER 42 |
Foreseeability tested against well-informed employer standard; reliance on established practice unless clearly bad. |
Used by defendant to argue no breach where practice was industry standard and not bad practice. |
| Baker v Quantum Clothing Group Limited [2011] UKSC 17 |
Foreseeability judged by standards of the time, not hindsight. |
Applied to caution against retrospective imposition of duties based on later knowledge. |
| Heward v Marks & Spencer Plc [2014] EWHC 3183 (AB) |
No breach of duty found where exposure was low and not reasonably foreseeable as harmful at the time. |
Relied upon to support defendant's position on low-level exposure. |
| Abraham v G Ireson & Sons (Properties) Limited [2009] EWHC 1958 (QB) |
Low and intermittent exposure did not impose knowledge of risk on employer. |
Adopted by the court to find no breach given low exposure levels in this case. |
Court's Reasoning and Analysis
The court carefully examined the deceased's evidence and found significant reasons to doubt the accuracy and plausibility of his detailed accounts of exposure, particularly the claim of daily prolonged contact with asbestos dust and supervision of carpenters. The court preferred the view that the deceased's role was more likely that of a general labourer with sporadic and intermittent exposure, rather than a trainee supervisor with daily prolonged exposure.
The court accepted that sweeping up asbestos dust occurred occasionally but likely only occupied a small portion of the working day. The expert evidence from both parties' occupational hygienists converged on an estimated average exposure of approximately two fibres/ml, which was substantially below the 1960 threshold limit of 30 fibres/ml.
The court reviewed extensive literature and case law on the knowledge of asbestos risks in the mid-20th century, confirming that while asbestos dust was recognized as harmful and precautions were advised, the understanding related primarily to heavy and prolonged exposure causing asbestosis. It was not until the mid-1960s that the link between light exposure and mesothelioma became clearer.
The court applied established legal principles requiring assessment of the defendant's duty based on the knowledge reasonably available at the time, without hindsight. The court found that the defendant was not fixed with knowledge that the low level and intermittent exposure in this case posed a foreseeable risk of injury.
Consequently, the court concluded that the defendant did not breach its duty of care by failing to warn or protect the deceased under the circumstances prevailing in the late 1950s.
Holding and Implications
The court's final decision is IN FAVOUR OF THE DEFENDANT.
The court held that liability is not established because the exposure to asbestos dust was of a low order, intermittent, and not sufficient to impose a duty to take precautions given the knowledge available at the time. The defendant is therefore not liable for the deceased's mesothelioma arising from the alleged exposure during employment.
No new precedent was set by this decision; it reaffirms the established legal principles relating to foreseeability and duty of care in the context of evolving scientific knowledge and historical exposure levels.