At Step 4 of Social Security’s sequential evaluation, the SSA considers the claimant’s ability to perform their past relevant work, both as actually performed and as generally performed in the national economy. That means that Social Security will evaluate your ability to do the jobs you have had over the past 15 years, both as described in your work history report and as generally performed.
If the job you had as a cashier was more demanding physically than that job is generally, and you could perform the job as generally performed, you will not be awarded disability benefits. On the face of it, this is a fair rule. But in practice, problems arise.
The first problem is that, to determine how a particular job is generally performed, Social Security refers to the Dictionary of Occupational Titles (DOT), a Department of Labor publication that hasn’t been updated since 1991 (and many jobs in the DOT date back to the 1970’s). So the description of a job’s requirements may be woefully outdated. I had this issue at a hearing recently, where an office-type job description in the DOT dated back to before there were PCs in the office, and before the internet. The job today is all about working on a computer and keyboarding, in a way the job wasn’t performed 30+ years ago. It took a lot of cajoling to get the vocational expert at the hearing to acknowledge that the job had evolved over time from its DOT description, and now required extensive use of the hands (which was a problem for my 63-year old client with severe psoriatic arthritis).
The disparity between the reality in the workplace and the dated job desciptions in DOT continues to grow with time. The issue has started to garner some media attention because of its unfairness. Claims are being denied using outdated vocational information.
Another problem is that a disability examiner at DDS may select a job title in the Dictionary of Occupational TItles that has the same name as the job performed by the claimant, but is a actually a different job.

