Vocational experts are present at every Social Security Disability hearing. Their job is to not only classify your past relevant work, but to also testify as to what jobs are available in the national economy. Often their testimony at the hearing may be difficult to understand due to the legal terms or other Social Security specific terms being used in their testimony.
Vocational Expert Testimony: The Dictionary of Occupational Titles
Job Obsolescence
Proving a disability claim before Social Security Administration essentially involves showing an inability to perform past work or any other substantial work that exists in the national economy due to a diagnosable medical impairment(s). Social Security Administration will deem that work exists in the national economy when there is a significant number of jobs that meet a claimant's physical, mental, and vocational limitations. While the job could exist outside the region you live, isolated jobs that exist in relatively few locations are not considered "work which exists in the national economy." 20 C.F.R. 404.1560.
