Contracts serve an important function: allocation of risks. In achieving this function, contractual parties routinely include a force majeure clause in their contracts to be excused from performance in the face of a supervening event. But what events qualify to excuse performance and how have...

In this paper we study the zero frequency spectral properties of fractionally cointegrated long memory processes and introduce a new frequency domain principal components estimator of the cointegration space and the factor loading matrix for the long memory factors. We find that for fractionally...