Clifford Chance
A Guide to 'Reasonable', 'All Reasonable' and 'Best Endeavours' Clauses [Japanese version]
13 June 2012
The terms 'reasonable endeavours', 'all reasonable endeavours' and 'best endeavours' are frequently used in contracts. In the English legal system, these terms are not defined by legislation but their meanings have been determined by case law.
The meaning of such terms will always be dependent on the facts of the specific contract and situation, but this brief summary should give a drafter a general idea of how the terms may be interpreted under English law.
