MO HB1403

Redefines occupational disease compensation to require that occupational exposure be the "prevailing factor" in causing both the medical condition and disability, excluding ordinary deterioration from aging or normal activities.

Adds new eligibility requirements for workers' compensation benefits, including mandatory legal work authorization in the United States and suspension of benefits during incarceration.

Restructures the Second Injury Fund to eliminate permanent partial disability claims for injuries after the bill's effective date and limit permanent total disability claims to employees with military service disabilities or prior compensable injuries of at least 50 weeks combined with a subsequent work injury.

Creates a new Second Injury Fund Commission composed of the governor, attorney general, and legislative leaders with authority to approve supplemental surcharges up to 1.5% to maintain fund solvency through 2019.

Establishes section 287.165 setting workers' compensation interest rates based on the adjusted rate of interest established by the director of revenue, and declares sections 287.165 and 287.220 as emergency measures effective upon passage.