Let me state our case... Our claim for Extended Overhead Cost was reconciled and approved 1.5 years after the delaying incident. We decided to bill it on the client since it is only proper that we reimburse the unbudgeted overhead cost during the work disruption but the client disputed this and said that this should be billed after the contract completion. As I’ve explained it, the delaying incident happened sometime at the course of the contract and money spent unwantedly (Overhead Cost) evidently not a compensation for activities on the last part of the project since we have resource loading for that.