Bond — a three-party contract under which the insurer agrees to pay losses caused by criminal acts (e.g., fidelity bonds) or the failure to perform a specific act (e.g., performance or surety bonds). The principal (i.e., the party paying the bond premium) is also called the obligor (i.e., the party with the obligation to perform). If there is a default, the surety (i.e., the insurer) pays the loss of the third party (the obligee). The obligor must then reimburse the surety for the amount of loss paid.