If you do not find your own typo as Mike9241 replied, look at a pay stub from each employer. If it includes the EIN, you can compare each to the W-2 you got, and you may find the service issuing the W-2 made a typo. Failing that, search the internet for the EIN on each W-2. Most EINs are not posted, but you might get lucky. Beyond that, you can call the employer or call a co-worker and ask them to verify the EIN.
