Mass Tort Defense : Mass Tort Defense Lawyer & Attorney : Sean P. Wajert : Dechert Law Firm : Products Liability, Class Actions, Pharmaceutical Litigation

The Sixth Circuit issues and interesting opinion last week, exploring plaintiff's burden to prove that exposure to defendant's product caused his injury in the context in which plaintiff was exposed to numerous other similar products. See Moeller v. Garlock Sealing Technologies LLC, No. 09-5670, (6th Cir., 9/28/11).

Plaintiff was a pipefitter who worked with asbestos-containing gaskets made by Garlock from about 1962 until about 1970. But from 1962 until about 1975, he also sustained significant exposure to asbestos insulation. He contracted mesothelioma and sued, alleging that his exposure to Garlock’s asbestos-containing gaskets was a substantial factor in causing his injuries.

At trial, plaintiff's expert testified that exposure to asbestos from Garlock gaskets, along with his other exposures, contributed to the mesothelioma. And one of the treating oncologists opined  that if plaintiff had worked for many years (as he did) scraping and grinding asbestos gaskets, and if plaintiff breathed those fibers, then that exposure would have caused his cancer. In rebuttal, Garlock presented evidence that plaintiff had sustained substantial exposure to asbestos insulation products for 13 years. It also presented evidence that whereas asbestos insulation was banned in the 1970s, leading asbestos safety authorities believed that gaskets, such as those sold by Garlock, posed “no health hazard,” and were sold lawfully in the United States. Garlock also suggested that the plaintiff had only installed Garlock gaskets (an activity that both parties agree did not create a risk of injury), and had not ever removed them (the activity that the plaintiff alleges caused the injuries).

The jury returned a verdict for plaintiff, and defendant appealed.

To prevail on a negligence claim, Kentucky law requires a plaintiff to prove that a defendant’s conduct was a substantial factor in bringing about the harm. Deutsch v. Shein, 597 S.W.2d 141, 144 (Ky. 1980). Causation requires a link between the specific defendant’s conduct and the plaintiff’s injuries. See Estes v. Gibson, 257 S.W.2d 604, 607 (Ky. 1953) . Substantial causation refers to the probable cause, as opposed to a possible cause. One measure of whether an action is a substantial factor is the number of other factors which contribute in producing the harm and the extent of the effect which they have in producing it.

The appeals court concluded that the plaintiff failed to prove that Garlock’s product was a substantial factor in bringing about the harm. The plaintiff presented various witnesses to support the claim that the mesothelioma was caused by his exposure to Garlock gaskets. But one expert never actually said that the exposure to Garlock gaskets was a substantial factor in causing the  cancer; the others testified that all types of asbestos can cause mesothelioma and that any asbestos exposure counts as a “contributing factor.”  That testimony does not establish that exposure to Garlock gaskets in and of itself was a substantial factor.

Moreover, the evidence presented was insufficient to allow a jury to infer that exposure to Garlock gaskets was a substantial cause of the cancer. Plaintiff here presented no evidence quantifying  exposure to asbestos from Garlock gaskets. There was testimony that he removed gaskets for several years, and that some of those gaskets were Garlock’s. But the plaintiff failed to establish how many Garlock gaskets he removed, or how frequently he removed—as opposed to installed—them. The record also shows that plaintiff regularly tore out asbestos insulation during the relevant years, and that his exposure to asbestos from insulation would have been thousands of times greater than his exposure from removing gaskets.

Thus, while his exposure to Garlock gaskets may have contributed to his mesothelioma, the record simply does not support an inference that it was a substantial cause of his mesothelioma. Given that the Plaintiff failed to quantify his exposure to asbestos from Garlock gaskets and that the Plaintiff concedes that he sustained massive exposure to asbestos from non-Garlock sources, there is simply insufficient evidence to infer that Garlock gaskets probably, as opposed to possibly, were a substantial cause of the injury.

The court summed it up: saying that exposure to Garlock gaskets was a substantial cause of plaintiff’s mesothelioma would be akin to saying that one who pours a bucket of water into the
ocean has substantially contributed to the ocean’s volume.

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Two bills are pending in the Texas legislature to overturn a significant toxic tort decision made by the state's highest court. In Borg-Warner Corp. v. Arturo Flores, 232 S.W.3d 765 (Tex.2007), the court required plaintiffs to prove they had a sufficient level of exposure to the toxic substance, asbestos.

Earlier in April, a committee of the Texas Senate approved by a 6-2 vote a bill relating to the
standard of causation in claims involving mesothelioma caused by exposure to asbestos
fibers. The bill, S.B. 1123, introduced by Sen. Robert Duncan, R-Lubbock, would require a plaintiff to prove that a defendant ’s product or conduct was a substantial factor in causing the exposed claimant ’s injury by presenting qualitative proof that the asbestos exposure attributed to the defendant was substantial, and not merely de minimis, when considering (1) the frequency of the exposure;  (2) the regularity of the exposure; and (3) the proximity of the claimant to the source of the asbestos fibers.  A plaintiff would not be required to prove numerically the dose, approximate or otherwise, of asbestos fibers to which the claimant was exposed that are attributable to the defendant.

A House bill, introduced by Rep. Craig Eiland, D-Texas City, is still pending in committee. H.B. 1811 would require proof that the defendant ’s product or conduct was a substantial factor in causing the exposed person ’s injury, by showing that the exposure to the asbestos fibers for which that defendant is alleged to be responsible contributed to the cumulative exposure of the exposed person and was more than purely trivial when considering the following (same) qualitative factors: (1) the frequency of exposure; (2) the regularity of exposure; and (3) the proximity of the exposed person to the source of the asbestos fibers. Plaintiff need not prove, for any purpose, a quantitative dose, approximate quantitative dose, or estimated quantitative dose of asbestos fibers to which the exposed person was exposed.

Such language would significantly lower the standard for providing causation in mesothelioma litigation. Perhaps the most widely cited standard for proving causation in asbestos cases is the Lohrmann “frequency, regularity, and proximity” test. Lohrmann v. Pittsburgh Corning Corp., 782 F.2d 1156 (4th Cir.1986). The court there rejected a standard that if the plaintiff can present any evidence that a company's asbestos-containing product was at the workplace while the plaintiff was at the workplace, a jury question has been established as to whether that product proximately caused the plaintiff's disease. Instead, the court concluded that to support a reasonable inference of substantial causation from circumstantial evidence, there must be evidence of exposure to a specific product on a regular basis over some extended period of time in proximity to where the plaintiff actually worked.

While the test seemed to be tighter standard than the plaintiffs’ proposed test, since a plaintiff must prove more than a casual or minimum contact with the product, in reality the test has loosened the traditional standards for substantial factor causation. In Borg-Warner, the court held that a “frequency, regularity, and proximity” test does not, in itself, capture the role of causation as an essential predicate to liability. As in many jurisdictions, the word “substantial” in substantial factor is used to denote the fact that the defendant's conduct has such an effect in producing the harm as to lead reasonable people to regard it as a cause, using that word in the popular sense, in which there always lurks the idea of responsibility, rather than in the so-called philosophic sense, which includes every one of the great number of events without which any happening would not have occurred.

Substantial factor in a toxic tort case cannot be analyzed without recognizing that one of toxicology's central tenets is that “the dose makes the poison.” This notion was first attributed to sixteenth century philosopher-physician Paracelsus, who stated that all substances are poisonous-there is none which is not; the dose differentiates a poison from a remedy. Even water, in sufficient doses, can be toxic. Dose refers to the amount of chemical that enters the body, and, is probably the single most important factor to consider in evaluating whether an alleged exposure caused a specific adverse effect. Not all asbestos exposures cause cancer, and the scientific literature shows that more exposure leads to more disease (dose-response).

Plaintiffs showed nothing about how much asbestos Flores might have inhaled. He was exposed to “some asbestos” on a fairly regular basis for an extended period of time. Nevertheless, absent any evidence of dose, the jury could not evaluate the quantity of respirable asbestos to which Flores might have been exposed or whether those amounts were sufficient to cause his disease. Nor did Flores introduce evidence regarding what percentage of that indeterminate amount may have originated in defendant Borg-Warner products. Plaintiffs did not prove the asbestos content of other brands of brake pads or how much of Flores's exposure came from grinding new pads as opposed to blowing out old ones. Plaintiff need not show dose with mathematical precision.  But in a case like this, proof of mere frequency, regularity, and proximity is necessary but not sufficient, said the court, as it provides none of the quantitative information necessary to support causation under Texas law.
 

The proposed legislation would overturn that clear and compelling logic.

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