What Is the National Interest Waiver (NIW)? The National Interest Waiver, or NIW, is an exemption from the labor certification process for exceptional ability workers and advanced degree workers. It also exempts foreign nationals of the requirement for a job offer, which can often be a requirement for other types of employment-based visas. Processing time Approval for a NIW takes time. The processing times for an NIW vary from one case to the next, but they are usually between three and nine months. Those wishing to apply for an NIW should consult a competent immigration lawyer before filing the petition. An attorney will help the applicant understand the different green card options available. There are many factors that can impact the processing time. The type of petition and the evidenc...