An informative legal analysis of occupational diseases pursuant to Missouri law is found in Kelley v. Banta and Stude Const. Co., Inc., 1 S.W.3d 43 (Mo. App. E.D. 1999), from which the following legal principles are cited:
In order to support a finding of occupational disease, employee must provide substantial and competent evidence that he/she has contracted an occupationally induced disease rather than an ordinary disease of life. The inquiry involves two considerations: (1) whether there was an exposure to the disease which was greater than or different from that which affects the public generally, and (2) whether there was a recognizable link between the disease and some distinctive feature of the employee's job which is common to all jobs of that sort.
Claimant must also establish, generally through expert testimony, the probability that the claimed occupational disease was caused by conditions in the work place. Claimant must prove "a direct causal connection between the conditions under which the work is performed and the occupational disease." However, such conditions need not be the sole cause of the occupational disease, so long as they are a major contributing factor to the disease. A single medical opinion will support a finding of compensability even where the causes of the disease are indeterminate. The opinion may be based on a doctor's written report alone. Where the opinions of medical experts are in conflict, the fact-finding body determines whose opinion is the most credible. Where there are conflicting medical opinions, the fact finder may reject all or part of one party's expert testimony which it does
not consider credible and accept as true the contrary testimony given by the other litigant's expert.
In addition, the claimant bears the burden of proving that not only did an accident occur, but it resulted in injury to him. Thorsen v. Sachs Electric Co., 52 S.W.3d 611, 621 (Mo.App. W.D. 2001); Silman v. William Montgomery \& Associates, 891 S.W.2d 173, 175 (Mo.App. E.D. 1995); McGrath v. Satellite Sprinkler Systems, 877 S.W.2d 704, 708 (Mo.App. E.D. 1994). For an injury to be compensable, the evidence must establish a causal connection between the accident and the injury. Silman, supra. The testimony of a claimant or other lay witness can constitute substantial evidence of the nature, cause, and extent of disability when the facts fall within the realm of lay understanding. Id. Medical causation, not within the common knowledge or experience, must be established by scientific or medical evidence showing the cause and effect relationship between the complained of condition and the asserted cause. McGrath, supra. Where the condition presented is a sophisticated injury that requires surgical intervention or other highly scientific technique for diagnosis, and particularly where there is a serious question of preexisting disability and its extent, the proof of causation is not within the realm of lay understanding nor -- in the absence of expert opinion -- is the finding of causation within the competency of the administrative tribunal. Silman, supra at 175, 176. This requires claimant's medical expert to establish the probability claimant's injuries were caused by the work accident. McGrath, supra. The ultimate importance of the expert testimony is to be determined from the testimony as a whole and less than direct statements of reasonable medical certainty will be sufficient. Id.
In this case, the claimant testified that he suffered from toxic exposure to benzene and xylene compounds during his work as a quality control manager for this employer. . Where the condition presented is a sophisticated injury that requires surgical intervention or other highly scientific technique for diagnosis, and particularly where there is a serious question of preexisting disability and its extent, the proof of causation is not within the realm of lay understanding nor -- in the absence of expert opinion -- is the finding of causation within the competency of the administrative tribunal. Silman, supra at 175, 176. The claimant delineated a complicated and complex series of disorders that afflict him. Given the complicated and complex nature of the conditions described by the claimant, the law compels expert opinion evidence to establish a prima facie case.
Unfortunately, the claimant testified that his medical records were unobtainable and that no medical providers would treat him for his various conditions. He declined medical care from the employer. He also testified that the Social Security Administration awarded him disability benefits as of October 15, 2004, but the claimant did not know the reason the Social Security Administration awarded him disability benefits. Since the claimant's medical records are not available and the conditions alleged by the claimant are not susceptible of lay determination, the claimant did not establish a prima facie case without the medical records and expert medical opinion evidence to prove the relationship between the chemical exposure and the complex and complicated disorders described by the claimant. The usual method of proof is to offer medical records and expert medical opinions. In essence, the claimant testified that he has the conditions based on his own opinion and hearsay from unknown medical providers. Therefore, the claimant has not established "a direct causal connection between the conditions under which the work is performed and the occupational disease."
The claimant offered extensive testimony regarding other actions that may be involved in the facts presented, such as criminal actions, tort actions, and government corruption. However, the evidence presented does not present a prima facie case for recovery under the Missouri Workers' Compensation statute. Therefore, the claimant's claim is denied.