Many aliens want to come to the United States to work. This page provides a summary of employment-based nonimmigrant and immigrant visa classifications and other categories of aliens who are eligible for employment authorization. Each classification provides a link to more detailed information on its requirements.
A common way to work temporarily in the United States as a nonimmigrant is for a prospective employer to file a petition with USCIS on your behalf. The Temporary (Nonimmigrant) Workers webpage describes the main nonimmigrant temporary worker classifications.
If you have the right combination of skills, education, and/or work experience, you may be able to live and work permanently in the United States by seeking an employment-based immigrant visa. The Permanent Workers webpage describes the five employment-based immigrant visa preferences (also called categories).
If you live outside the United States and want to work here, you generally must apply for a visa from