Patrons who do not respond to overdue notices are subject to a two-stage billing process known as "lost-book" charges. An initial $10 non-refundable fee is processed for each item that is billed, followed by a second bill for the balance ($50) or the cost of the item, whichever is greater. Patrons will have up to 3 months from the date of the first invoice to return the billed item(s) before the second bill is processed. Once billed, the initial billing cost for each item becomes non-refundable.
NIU faculty may appeal their library charges to the Head of User Services. All other borrowers may appeal their billing charges by filing a written appeal with the Circulation Services unit of the University Libraries. These appeals are reviewed by the Circulation Appeals Committee. Patrons are informed of the Committee's decision via email or mail.