# Labor and Employment (GLE)

## Title 9. Workers' Compensation

### Subtitle 6. Benefits

#### Section 9-656

(a) If it appears that a permanent disability of a covered employee following an accidental personal injury or occupational disease is due partly to the accidental personal injury or occupational disease and partly to a preexisting disease or infirmity, the Commission shall determine:

  (1) the proportion of the disability that is reasonably attributable to the accidental personal injury or occupational disease; and

  (2) the proportion of the disability that is reasonably attributable to the preexisting disease or infirmity.

(b) The covered employee:

  (1) is entitled to compensation for the portion of the disability of the covered employee that is reasonably attributable solely to the accidental personal injury or occupational disease; and

  (2) is not entitled to compensation for the portion of the disability that is reasonably attributable to the preexisting disease or infirmity.

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Md. Code Ann., Lab. & Empl. (as displayed at mgaleg.maryland.gov, October 16, 2026)