If you have family members as your dependents to file Form I-485 applications after your employment-based I-140 approval, then you should file a Form I-864 as your financial support for your dependents.

This Form I-864 is legally required for many family-based and some employment based immigrants to show they will have adequate means of support after immigration to the U.S. Generally, the following intending immigrants need an Affidavit of Support:

1) Applicants for family-based immigrant visas;

2) Applicants for employment-based immigrant visas where a relative filed the immigrant visa petition.