WHO IS RESPONSIBLE FOR REPAYING OVER-PAYMENT CLAIMS?

Adults (18 years of age and older) who lived in the household during the overpayment can be accountable to make repayment. A liable individual is a person who is or was eligible to receive the benefit(s), whether or not they were the person who applied for assistance on behalf of other household members. A responsible individual is a person who is or was a required household member but was unreported or not included in the calculation of the benefit(s); responsible individuals include caretaker relatives, protective payees, or relative caregivers

Question: 
WHO IS RESPONSIBLE FOR REPAYING OVER-PAYMENT CLAIMS?