You must have been employed outside the United States for at least 1 year in the 3 years preceding the petition or the most recent lawful nonimmigrant admission if you are already working for the U.S. petitioning employer.

The U.S. petitioner must have been doing business for at least 1 year, have a qualifying relationship to the entity you worked for outside the U.S., and intend to employ you in a managerial or executive capacity. 

No labor certification is required.