A self-insurer's bond is a type of surety bond that provides a promise to pay self-insured losses in case the promisor (self-insurer) is unable to meet its obligations.
For example, in order to self-insure workers compensation risk, most states require that the self-insurer post a self-insurer's bond with the state. The state then recognizes that the self-insurer will have adequate resources to pay workers compensation claims.