MO SB865

Replaces the "prevailing factor" causation standard with a "substantial factor" standard for determining whether an injury is compensable, making it easier for employees to prove work-related injuries

Redefines "accident" from an "unexpected traumatic event or unusual strain" during a "single work shift" to an "unexpected or unforeseen identifiable event or series of events happening suddenly and violently"

Reinstates the extension of premises doctrine as it existed prior to August 28, 2005, potentially expanding coverage for injuries occurring on routes to and from work on property not owned by the employer

Adopts (rather than rejects) case law interpretations from Bennett v. Columbia Health Care, Kasl v. Bristol Care, and Drewes v. TWA regarding definitions of "accident," "occupational disease," "arising out of," and "in the course of employment"

Creates new section 287.485 allowing either party to request a final hearing one year after an employee reaches maximum medical improvement, with the hearing to be scheduled within six months and not continued without consent of both parties