Buy a US Employment Authorization Card. Order an EAD card online. How can I purchase an EAD card for job? The I-766 Employment Authorization Document is issued on a standard credit card-sized plastic card with several security features. The card contains some basic information about the immigrant: name, date of birth, gender, immigrant category, country of birth, photo, immigrant registration number (also called an “A number”), card number, restrictions and conditions, and expiration date. But don’t confuse this document with a green card.