Some individuals who come into the United States do so through an employer. The labor certification for which employers can apply enables them to bring people into the country to fill jobs. The program is overseen by the Department of Labor.
The most common form of green card sponsorship through employment is the PERM labor certification. Often, after obtaining a nonimmigrant employment visa. The most popular nonimmigrant employment visas are H-1B, E-1, E-2, L-1, and O-1. Although F-1, J-1, P, TN, and E-3 may be pathways to permanent residency as well.