last injury plus the disability resulting from the last injury, if any, considered alone, shall
be deducted from the combined disability, and compensation for the balance, if any, shall
be paid out of a special fund known as the second injury fund.” “The determination of
whether a claimant is permanently and totally disabled is based upon the claimant's ability
to compete in the open labor market.” Brashers v. Treasurer of State as Custodian of
Second Injury Fund, 442 S.W.3d 152, 155 (Mo. App. S.D. 2014). There is no explicit
requirement that a pre-existing condition be symptomatic at the time of the subsequent,
primary injury.
In Atchison, the employee suffered a primary injury involving a herniated disc at L4-L5
following a compensable slip and fall at work. This fall, in isolation, created a 35%
permanent partial disability to the body as a whole. The employee suffered from
preexisting condition including both degenerative disc and degenerative joint disease
from L2-L3 through L5-S1 which was a permanent and potentially disabling medical
condition. This pre-existing degenerative condition created a 65% permanent partial
disability to the body as a whole. The employee was held to be permanently and totally
disabled following the work-related injury, which rendered his pre-existing condition
symptomatic and severely debilitating. On appeal, the SIF acknowledged the factual
findings of the ALJ and LIRC, but argued the LIRC mis-applied the law as pre-existing
permanent partial disability was not symptomatic and, therefore, not compensable. The
Court of Appeals found no requirement in the statute that any of the preexisting injuries
be “symptomatic” prior to the primary work injury in creating SIF liability for a permanent
total disability claim. The requirement is simply that the Commission must find that the
combination of the last injury and the preexisting disabilities resulted in permanent total
disability. In finding no requirement that pre-existing disabilities must be symptomatic at
the time of the second, primary injury, the Court of Appeals upheld the award of
permanent total disability against the SIF.
Atchison v. Missouri State Treasurer, 603 S.W.3d 719, 724 (Mo. App. S.D. 2020).
Q: Did an obese employee (deceased) suffering from a heat stroke while working
outside suffer a compensable workers’ compensation injury despite his obesity
being asserted as an idiopathic condition causing his injury?
A: Yes, when there is substantial credible evidence to support working in extremely hot
weather constituted an unexpected traumatic event or an unusual strain and was the
prevailing factor in causing the employee’s heat stroke and resulting death. Tyler Halsey
(Deceased) v. Townsend Tree Serv. Co., LLC). The exclusion from the category of
compensable injuries of an injury resulting directly or indirectly from idiopathic causes is
in the nature of an affirmative defense to the employer and is not the employee’s burden
to prove.
In Halsey, the 23-year-old claimant was working outside on July 22, 2016, trimming trees
and chipping and hauling brush in extreme heat. Claimant had just been hired and began
working for respondent just three days prior to his accident, and previously had not
worked in four years. The temperatures during the afternoon of July 22, 2016 in Poplar