Will the fiancee be able to work once he/she enters the United States on a K1 Fiance Visa?
Yes. Once the fiancee enters the United States on a K1 Visa, he/she may immediately apply for a Work Authorization Permit. However, since the fiancee must re-apply for a Work Permit after the filing of an Adjustment of Status (which is required after the marriage), we generally recommend waiting to apply for a work authorization until after the marriage takes place.