When evaluating the eligibility of individuals for long-term disability benefits, insurance companies often must determine whether those individuals can carry out the material and substantial duties of their occupations. In some cases, people may differ as to what constitutes a material and substantial duty of a specific profession. As a result, many disability insurance policies, whether they are employer-sponsored plans governed by ERISA or private disability insurance plans, provide a definition of “material and substantial duties” in their plan documents.
In most cases, material duties are those duties that are essential to a particular occupation. An inability to perform the material duties of a job generally makes you unable to do the job. For instance, a surgeon must have the use of his or her hands to carry out surgical procedures. An airline pilot must have excellent vision to fly commercial airplanes.

What are Material and Substantial Duties in a Long-Term Disability Insurance Claim?