The recent financial crisis has questioned whether existing contracts may be adapted, terminated or renegotiated as a result of unexpected circumstances. The question is not a new one. In medieval times the notion of clausula rebus sic stantibus was developed to cope with such situations, and Germany introduced the theory of Wegfall der Geschäftsgrundlage. In England, the Coronation cases provided one possible answer. This comparative study explores the possibility of classifying jurisdictions as 'open' or 'closed' in this regard.
• Proposes a new classification of jurisdictions in how to deal with unexpected circumstances
• Uses the questionnaire method to highlight the convergences and divergences in key European jurisdictions
• Presents practical solutions to some core problems concerning unexpected circumstances
The recent financial crisis has questioned whether existing contracts may be adapted, terminated or renegotiated as a result of unexpected circumstances. The question is not a new one. In medieval times the notion of clausula rebus sic stantibus was developed to cope with such situations, and Germany introduced the theory of Wegfall der Geschäftsgrundlage. In England, the Coronation cases provided one possible answer. This comparative study explores the possibility of classifying jurisdictions as 'open' or 'closed' in this regard.