[header] How to find an old 401k [title] Find your old employers. [step] The easiest way to find your plan is often to contact your old employer. However, first you need their contact information. 
Try looking the company up online to find the contact details, or go through your old paperwork to look for check stubs, old deposit information, or the information listed on your tax returns. [substeps] Conduct an online search for a website or phone number.