In view of the seismic rule change reducing the past relevant work period to 5 years, and new Ruling 24-2p, it is a good time to review the various issues involved with past relevant work (PRW).
Remember that not all past work is past relevant work. Under the new rule, the job must have lasted for at least 30 days. It must have been performed within the past 5 years. It must have been performed at the SGA level. (remember, even part-time work at SGA can be past relevant work).
You may have learned job skills at your previous work. If your acquired job skills can transfer to skilled or semi-skilled work that you are still able to do, it is problematic for your claim at step 5 of the sequential evaluation.
Eliminating your past relevant work is important for all claimants, but it is particularly important for Social Security disability disability claimants over the age of 55.