Under Missouri Workers' Compensation law, the claimant bears the burden of proving all essential elements of his or her workers' compensation claim. ${ }^{15}$ Proof is made only by competent and substantial evidence, and may not rest on speculation. ${ }^{16}$ Medical causation not within lay understanding or experience requires expert medical evidence. ${ }^{17}$ When medical theories conflict, deciding which to accept is an issue reserved for the determination of the fact finder. ${ }^{18}$
In addition, the fact finder may accept only part of the testimony of a medical expert and reject the remainder of it. ${ }^{19}$ Where there are conflicting medical opinions, the fact finder may reject all or part of one party's expert testimony that it does not consider credible and accept as true the contrary testimony given by the other litigant's expert. ${ }^{20}$
Section 287.020.7, RSMo, provides that "total disability" is the inability to return to any employment and not merely the inability to return to the employment in which the employee was engaged at the time of the accident. ${ }^{21}$ The main factor in this determination is whether, in the ordinary course of business, any employer would reasonably be expected to employ the employee in this present physical condition and reasonably expect him to perform the duties of the work for which he was hired. ${ }^{22}$ The test for permanent and total disability is whether the claimant would be able to compete in the open labor market. ${ }^{23}$
There is no dispute among the parties that claimant has suffered serious permanent disability associated with the work injury. In fact, there appears to be no dispute as to whether she is permanently and totally disabled. Both the vocational expert hired by the employee and the one hired by the employer agree that claimant is unable to compete in the open labor market. The restrictions outlined by Dr. Volarich, and the testimony and presentation of the claimant, clearly and convincingly outline an inability to work at even less than a sedentary demand level. The need to lie down throughout the day, the inability to stay in a seated position for more than 15-30 minutes, the ongoing use of pain medication, and the inability to concentrate or focus due to severe ongoing pain all represent an individual who is unable to perform work. I find that the
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[^0]: ${ }^{14} Kasl v. Bristol Care, Inc., 984 S.W.2d 852 (Mo. 1999).
{ }^{15}$ Fischer v. Archdiocese of St. Louis, 793 S.W.2d 195, 198 (Mo. App. W.D. 1990); Grime v. Altec Indus., 83 S.W.3d 581, 583 (Mo. App. 2002).
${ }^{16} Griggs v. A.B. Chance Company, 503 S.W.2d 697, 703 (Mo. App. W.D. 1974).
{ }^{17} Wright v. Sports Associated, Inc., 887 S.W.2d 596, 600 (Mo. banc 1994).
{ }^{18} Hawkins v. Emerson Elec. Co., 676 S.W.2d 872, 977 (Mo. App. 1984).
{ }^{19} Cole v. Best Motor Lines, 303 S.W.2d 170, 174 (Mo. App. 1957).
{ }^{20}$ Webber v. Chrysler Corp., 826 S.W.2d 51, 54 (Mo. App. 1992); Hutchinson v. Tri State Motor Transit Co., 721 S.W.2d 158, 163 (Mo. App. 1986).
${ }^{21}$ See also Houston v. Roadway Express, Inc., 133 S.W.3d 173, 178 (Mo.App. S.D. 2004).
${ }^{22}$ Reiner v. Treasurer of the State of Missouri, 837 S.W.2d 363, 367 (Mo.App. 1992).
${ }^{23} \mathrm{Id}$.
evidence clearly shows that claimant is permanently and totally disabled. I also find that claimant has been unable to work since January 2005, when she became permanently and totally disabled, and I find that she continues to be permanently and totally disabled and unable to compete in the open labor market.