- Under Section 287.067.1 RSMo., "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."
- Under Section 287.067.2 RSMo., "an injury 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."
- Under Section 287.067.3 RSMo., "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 Section 287.020.3 (1) RSMo., " the term 'injury' is hereby defined to be an injury which has arisen out of and in the course of employment."
- Under Section 287.190.6 RSMo., "in determining compensability and disability, where inconsistent or conflicting medical opinions exist, objective medical findings shall prevail over subjective medical findings. Objective medical findings are those findings demonstrable on physical examination or by appropriate tests or diagnostic procedures."
- Under Section 287.800.1 RSMo., "administrative law judges, associate administrative law judges, legal advisors, the labor and industrial relations commission, the division of workers' compensation, and any reviewing courts shall construe the provisions of this chapter strictly."
- Under Section 287.800.2 RSMo., "administrative law judges, associate administrative law judges, legal advisors, the labor and industrial relations commission, and the division of workers' compensation shall weigh the evidence impartially without giving the benefit of the doubt to any party when weighing evidence and resolving factual conflicts."
- Under Section 287.140.1 "the employee shall receive and the employer shall provide such medical, surgical, chiropractic, and hospital treatment, including nursing, custodial, ambulance, and medicines, as may reasonably be required after the injury or disability, to cure and relieve from the effects of the injury".