How do I find an EIN for a company. I have all the information I need to enter but no EIN. I called the company and asked about my W-2 and they said it got returned. Im not sure why cause that address is still ok but when I tried to give them a diffrent address they said it was against the law for them to do that and they could only mail it to the address they had. They are not provididng me with what I need hence the reason I dont work for them anymore. What should I do?