Joanne Crupi was arrested at her Westfield, New Jersey, home, while Annette Bongiorno was arrested at her home in Boca Raton, Florida.
The 61-year-old Bongiorno worked for Madoff for more than 40 years as as a secretary and back office staff supervisor. Federal prosecutors already moved to seize her $1.2 million Boca Raton mansion.
Crupi was also a longtime Madoff employee. Federal prosecutors seized her $2.25 million house in Mantoloking, on the Jersey Shore.