EB-3 Visa is a preference category for United States employment-based green card/permanent residency. Semi-skilled workers or other professionals qualify for this type of the USA work visa.
The eligibility is judged through education, skills and work experience:
Labor Certification requirement is waived off only if the applicant possesses extraordinary skills and can benefit the U.S. economy. Sponsorship from any employer is not required for this type of visa.