To get the work permit or employment authorization, the Form I-765, Application for Employment Authorization, should be filed with the United States Citizenship and Immigration Services (USCIS). Generally, the employment authorization application should be filed together with Form I-485 application for adjustment of status simultaneously, without paying the Form I-765 application fee.

But if the employment authorization Form I-765 is filed separately with the Form I-485 application, an Form I-765 application fee should be paid to USCIS.