All State Department officials are required to sign the “separation statement” when they leave the department, known as the OF-109 form. However, Abedin has a private email address (firstname.lastname@example.org) on the same private server that Clinton does, and when she leaves the department in February 2013 she does not turn over any of her emails from it, including work-related emails.
Her emails will not be handed over until a couple of years later, after various lawsuits and investigations. In signing the form, Abedin acknowledges she could be subject to “criminal penalties” for lying on the document.
The Hill will later report, “It’s unclear whether Abedin would be subject to prosecution, given the unusual nature of Clinton’s private email setup.” (The Hill, 11/13/2015) (US Department of State, 9/11/2015)