The Warranty Bond is a guarantee which secures the Employer in the case the Contractor will not remedy the defects, if any, which may occur during the warranty period of the works.
It is often issued by an insurance company or (especially in mid size international projects) by a bank and it provides the payment of a sum of money if the Contractor will not perform any remedial work as provided in the contract, a sum which will be used by the Employer to have the remedial works carried out by a third party.