Having your employment history is very important so that getting a resume put together for a possible job is key to be hired.
As for getting your past employment history, while nobody on this site will have that personal information that there are ways in order to locate it:
1. Locate prior W-2 statements in tax returns as this will have your work going back years.
2. Social Security for a fee will be able to send you your previous employment history. Follow the easy instructions below:
You can then request from customer service a refund.