For employmentbased visa applications: You must present your employer's letter with the job offer. Learn more about visa types .Complete the online visa application form,DS-160 . Collect proof of employment offer, such as a contract or official job offer letter. A letter of request from the prospective employer stating reasons for the application, the position and the period of time required. An employer has to want to hire you for a job that qualifies for a visa. Application form needs to be completed in BLOCK letters (e.g. DOE, JOHN) and in black or blue ink only. An employer has to want to hire you for a job that qualifies for a visa. Application form needs to be completed in BLOCK letters (e.g.