The IRS keeps records of previous employment, as long as your employer filed w-4 form upon hiring you. Even if the workplace is no longer existent, the IRS will have these records.

You can start by going to this page (< href="http://www.irs.gov/localcontacts/index.html" title="IRS Local Offices">http://www.irs.gov/localcontacts/index.html) and searching for the local IRS office nearest to the place of prior employment.

On the other hand, if no w-4 was filed for this work, the IRS will have no record of it. If your employer did not file a w-4, then there is no guarantee that any record will still exist.