Yannai is known for writting a reference guide to the world's top chefs called "The International Who's Who of Chefs 2004-2005."
Federal prosecutors allege he used au pair websites to try convince his victims that he was in the publishing business and looking for a woman to prepare meals and accompany him and his wife on trips as a personal assistant.
He is also facing similar state charges, including labor trafficking and sexual abuse of women from Hungary, France and Brazil. Yannai faces life in prison and the lose of his home.