accident when it occurred. If the employer does not admit actual knowledge, the issue becomes one of fact. If the employee produces substantial evidence that the employer had actual knowledge, the employee thereby makes a prima facie showing of absence of prejudice which shifts the burden of showing prejudice to the employer.
However, when the claimant does not show either written notice or actual knowledge, the burden rests on claimant to supply evidence and obtain the Commission's finding that no prejudice to the employer resulted. If no such evidence is adduced, we presume that the employer was prejudiced by the lack of notice because it was not able to make a timely investigation.
Soos, 19 S.W.3d at 686 (citations omitted).
It is well settled that notice of a potentially compensable injury acquired by a supervisory employee is imputed to the employer. Hillenburg v. Lester E. Cox Medical Ctr., 879 S.W.2d 652, 654-55 (Mo. App. 1994). Employee testified that she told a supervisor named Ms. Evelyn about her injuries a couple of weeks after she sustained them, but we have found employee's testimony lacking credibility on this point, and there is no other evidence that employee told a supervisor about her injuries. We conclude that employee has failed to prove that employer had actual notice, before March 17, 2006, that she claimed to have sustained low back and right leg injuries on or about November 28 or 29, 2005, in the course of performing her work duties. We find no other evidence supplied by employee to demonstrate employer was not prejudiced as a result of her failure to provide written or actual notice to employer until several months after her alleged accident. Accordingly, we will presume employer was prejudiced.
Employee sought treatment on her own until March 17, 2006. Employer was deprived the chance to promptly investigate the accident and provide immediate treatment in order to minimize the effects of the work injury, and was also deprived the opportunity to secure a contemporary evaluation of the nature and extent of the injuries employee suffered in the alleged accident. In a case such as this, where accident is at issue and the parties contest whether employee's injuries resulted from degenerative processes or a traumatic event, we cannot say that employer was not prejudiced when it was deprived the opportunity to promptly investigate the circumstances of the alleged event.
Given the foregoing, we conclude that employer was prejudiced by employee's failure to provide written notice.