4.09 Undue Hardship Defense is a legal defense that allows someone to be relieved from certain obligations, such as a contract or a court order, if the individual can demonstrate that fulfilling the obligation would cause them to suffer an extreme hardship. There are two primary types of 4.09 Undue Hardship Defense: 1) Substantial Hardship and 2) Unforeseen Circumstances. Substantial Hardship occurs when the individual is unable to fulfill the obligation due to a financial burden, an inability to find an alternative, or other difficulties that are beyond their control. Unforeseen Circumstances is when an event or situation arises that could not have reasonably been anticipated or foreseen at the time the obligation was created. Both types of defense must be proven in order for the individual to be relieved from the obligation.