Which document is used to establish employment authorization?

The document used to establish employment authorization is the Social Security card. This is crucial because the Social Security card is specifically designed to facilitate the reporting of income and the accounting of earnings for taxation and social security benefits.

When an individual is hired, employers are required to verify the identity and employment eligibility of their employees, often through Form I-9. The Social Security card serves as one of the acceptable documents to demonstrate eligibility for employment in the United States. It indicates that the individual has been assigned a Social Security number, which is essential for tax reporting and regulating labor within the U.S. economy.

While other documents such as a military ID or a school ID may provide identification, they do not specifically establish employment authorization like the Social Security card does. A voter's registration card is also not considered a valid form of employment authorization, as it does not pertain to work eligibility or tax identification.