The EB-3 classification is open to foreign nationals with at least two years experience as skilled workers, professionals with bachelors' degrees and the following:
Professionals with Bachelor’s degrees who do not qualify for either categories EB-1 and EB-2, or
Aliens with at least two years of experience as skilled workers, professionals with a baccalaureate degree, or
Unskilled Workers who can contribute abilities unavailable in the US
Your employer should file-in USCIS Form I-140 Petition for Alien Workers with the USCIS Regional Service Center that has jurisdiction over the location of your employment. EB-3 petitions also require an approved Labor Certification (Form ETA-9089) from the Department of Labor's Employment and Training Administration.
Skilled workers should have at least two years experience, either through hands-on experience or through post-secondary education.
Professionals should have either a U.S bachelor's degree or a foreign equivalent degree.