When an employee is hurt on the job, and a permanent injury results, he or she is usually assigned an “impairment rating” under the American Medical Association’s Guides to Permanent Physical Impairment.
The workers’ compensation commission – and the court, if the matter proceeds further through an appeal – uses the rating and other factors in determining the amount of permanent partial disability benefits to which an employee is entitled.
The Guides can also be used to establish an employee’s permanent total disability for the purposes of workers’ compensation law.