Defendant was contracted to build a tanker for Plaintiff for a price in dollars that was not to change.
When the dollar devalued, Defendant demanded that a higher price be paid to compensate and threatened to terminate unless Plaintiff agreed. Plaintiff paid and then tried to reclaim the money due to economic duress.
Mocatta J held that there was duress, BUT that Plaintiff couldn’t reclaim the money because, in paying the final instalments later on without protest and in making a big delay in their claim for payments, they had actually affirmed the contract.
The approach to economic duress is to see if the principles fit, NOT to reason by analogy or see if the case falls within previously established categories.
A threat to break a contract MAY = economic duress in the right circumstances.
Generally money paid under economic duress can be recovered and contracts voided (provided no affirmation).