Employee's brief focuses on a medical causation argument that Dr. Schoedinger agreed that a portion of employee's symptomatology is attributable to the repetitive nature of her work. Dr. Schoedinger's report states that employee's symptoms
are attributable to aggravated degenerative cervical disc disease and arthritis; in addition to which, she may have a cervical disc rupture at one or more levels. She was told that I believe a portion of her symptomatology is attributable to the repetitive nature of her job related activities and to those duties which require lifting or overhead use of her upper limbs.
Tr., at 245.
The ALJ found that "from the treatment records submitted in this case, there is no definitive opinion from any of her multiple treating physicians that her exposure to multiple chemicals at work were the prevailing factor in causing a specific diagnosis or condition." *Award 09-061323, p. 30.* We agree with the ALJ's award on this factual finding. Dr. Schoedinger's opinion further fails to establish that repetitive work duties were the prevailing factor in causing employee's medical condition and disability, as opposed to a contributing factor.
Section 287.067, RSMo, defines a compensable occupational disease as follows, in pertinent part:
- In this chapter the term "occupational disease" is hereby defined to mean, unless a different meaning is clearly indicated by the context, an identifiable disease arising with or without human fault out of and in the course of the employment. Ordinary diseases of life to which the general public is exposed outside of the employment shall not be compensable, except where the diseases follow as an incident of an occupational disease as defined in this section. The disease need not to have been foreseen or expected but after its contraction it must appear to have had its origin in a risk connected with the employment and to have flowed from that source as a rational consequence.
- An injury or death by occupational disease is compensable only if the occupational exposure was the prevailing factor in causing both the resulting medical condition and disability. The "prevailing factor" is defined to be the primary factor, in relation to any other factor, causing both the resulting medical condition and disability. Ordinary, gradual deterioration, or progressive degeneration of the body caused by aging or by the normal activities of day-to-day living shall not be compensable.
- An injury due to repetitive motion is recognized as an occupational disease for purposes of this chapter. An occupational disease due to repetitive motion is compensable only if the occupational exposure was the prevailing factor in causing both the resulting medical condition and disability. The "prevailing factor" is defined to be the primary factor, in relation to any other factor, causing both the resulting medical condition and disability. Ordinary, gradual deterioration, or progressive degeneration of the body caused by aging or by the normal activities of day-to-day living shall not be compensable.
Under this section, one does not have a compensable occupational disease if one's work duties constitute a contributing factor, as opposed to being the prevailing factor that causes both the resulting medical condition and disability. Because Dr. Schoedinger opined that the repetitive nature of employee's job-related activities contributed to employee's symptomatology, but did not opine that employee's work activities constituted the prevailing factor resulting in employee's medical condition and disability, his opinion fails to establish a compensable occupational disease under § 287.067. ${ }^{1}$