 An Interim Final Rule published by the United States Department of Labor published in December 2000 provided more clarity on how employers should determine whether they are H-1B-dependent and what documentation they need to maintain.This rule remains the main guideline to this date.When the H-1B1 visa (for Singapore and Chile) and E-3 visa (for Australia) were added (between 2003 and 2005), and the Labor Condition Application was modified to include them, it was updated to reflect that employees in these categories would not necessitate additional attestations, and that these employees would not count towards the number of H-1B employees.