The Immigration and Nationality Act requires that the hiring of a foreign worker will not adversely affect the wages and working conditions of U.S. workers comparably employed. To comply with the law, the U.S. Department of Labor's regulations require that the wages offered to a foreign worker must be the prevailing wage rate for the occupational classification in the area of employment. The prevailing wage rate is the average wage paid to similarly employed workers in a specific occupation in the area of intended employment.
Employers can obtain this wage rate by submitting a request to the National Prevailing Wage Center using the Application for Prevailing Wage Determination Form ETA-9141. Electronic filing via the Foreign Labor Application Gateway (FLAG.DOL.GOV) is strongly recommended.
USDOL Foreign Labor Application Gateway (FLAG.DOL.GOV for electronic filing - recommended)
Form ETA-9141: General Instructions (instructions for PDF form)