MO SB278

Repeals and replaces section 287.067, RSMo relating to occupational disease definitions and worker compensation eligibility

Requires occupational exposure to be the "prevailing factor" (primary factor in relation to any other factor) in causing both the medical condition and resulting disability for compensability

Explicitly excludes ordinary gradual deterioration, progressive degeneration from aging, and normal day-to-day living activities from compensation

Recognizes repetitive motion injuries, industrial noise hearing loss, radiation disability, and contagious/communicable diseases as occupational diseases with specific compensability standards

Expands occupational disease coverage for paid firefighters and paid police officers to include respiratory disease, cardiovascular disease, carcinoma from smoke/gases/carcinogens exposure, and psychological stress if direct causal relationship is established