MARCH 2012 Visa Bulettin   EMPLOYMENT-BASED PREFERENCES First:  Priority Workers: 28.6% of the worldwide employment-based preference level, plus any numbers not required for fourth and fifth preferences. Second:  Members of the Professions Holding Advanced Degrees or Persons of Exceptional Ability:  28.6% of the worldwide employment-based preference level, plus any numbers not required by first preference. Third:  Skilled Workers, Professionals, and Other Workers:  28.6%