In many employment-based green card cases, applicants may be able to change jobs while their adjustment of status application is pending under the portability provisions of the American Competitiveness in the Twenty-First Century Act (AC21). Generally, if the I-485 has been pending for at least 180 days and the underlying I-140 immigrant petition has been approved, the applicant may move to a new job in the same or a similar occupational classification. Proper documentation of the new employment is important, and applicants often submit Supplement J to confirm the qualifying job offer.