Barnett v. Kawasaki Motors — Court affirms reduction of worker’s shoulder-disability rating from 25% to 7%

Case
Bradley Barnett v. Kawasaki Motors MFG Corp USA and Sentry Casualty Company
Court
Missouri Court of Appeals, Western District
Judge
Thomas N. Chapman (Mike Parson, 2018); Karen King Mitchell (Jay Nixon, 2009); Janet Sutton (Mike Parson, 2021)
Date Decided
September 1, 2026
Docket No.
WD88459
Topics
Workers’ Compensation; Permanent Partial Disability; Medical Evidence; Witness Credibility
Source
Read the full opinion

Background

Bradley Barnett injured his right shoulder while working for Kawasaki Motors MFG Corp USA in June 2023. Diagnostic imaging showed a large rotator-cuff tear, which was surgically repaired. After physical therapy, Kawasaki’s physician determined that Barnett had reached maximum medical improvement, released him to unrestricted duty, and assessed a 7% permanent partial disability rating for the shoulder.

Barnett testified that he continued to experience pain, weakness, and limited motion, but he did not submit a competing physician’s impairment rating. An administrative law judge credited Barnett’s testimony and other evidence and awarded benefits based on a 25% permanent partial disability. The Labor and Industrial Relations Commission reduced the rating to 7%, finding that Barnett had not presented credible, persuasive evidence supporting a higher rating than the treating physician’s assessment.

The Court’s Holding

The Missouri Court of Appeals affirmed. It held that Missouri law requires permanent partial disability status and its connection to the work injury to be certified by a physician, but does not require a physician to quantify the degree of disability. The Commission may consider lay testimony and other evidence and is not bound by an expert’s percentage rating. Accordingly, Barnett was not required to present a competing physician rating.

The court nevertheless concluded that the Commission acted within its authority in setting the disability at 7%. The Commission could give greater weight to the treating physician’s findings, including his assessment that Barnett had excellent strength and range of motion and that his residual limitations were associated with avoiding stretching and strengthening activities. The Commission was not bound by the ALJ’s credibility findings, and Barnett’s unimpeached testimony about pain and limitations did not compel a 25% rating.

Key Takeaways

  • A physician must certify the existence and work-related nature of permanent partial disability, but need not determine its precise percentage.
  • A claimant may establish the extent of disability through lay and other competent evidence without submitting a competing physician rating.
  • The Commission independently evaluates credibility and evidentiary weight and is not required to defer to an ALJ’s findings.

Why It Matters

The decision confirms that an employer’s medical rating is not automatically dispositive in a Missouri workers’ compensation case. At the same time, a claimant seeking a higher rating must present evidence the Commission finds sufficiently persuasive to support that result.

The opinion also underscores the limited role of appellate review: when competent and substantial evidence supports the Commission’s disability rating, an appellate court will not substitute its own factual judgment even if the record could support a different outcome.

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