A Social Security Account Number card, unless the card includes one of the following restrictions: (1) NOT VALID FOR EMPLOYMENT. Job Title: Type of Work Performed: 3.1. In the form under documents, select only the following items: valid passport, I-20, and I-94. Be sure to include name, employee number or social security number and purpose of letter. Be sure to include name, employee number or social security number, and purpose of letter. Form I-765 – Application for Employment Authorization.