McCabes News
What happens if the parties to a contract depart from its terms but then one of them turns around and insists on strict compliance with the contract? Will the contract remain binding or will the parties be held to their new arrangement even if it does not constitute a binding contract? The doctrine of common law estoppel holds the answer.
Common law estoppel is a legal doctrine that may come into play in circumstances where parties to an agreement have departed from the strict terms of that agreement but have not entered into a new contract to give effect to their new arrangement. Essentially, common law estoppel prevents a party in this situation from enforcing its legal rights under the original agreement against the other party when it would be unjust to do so because it had induced the other party to assume that their underlying arrangement had changed. Common law estoppel only applies to assumptions about existing states of affairs and not to representations as to what will happen in the future.
There are two varieties of common law estoppel – estoppel by representation and estoppel by convention. While there is an emerging trend in Australia that these are simply two incidents of the one overarching doctrine, this view is far from settled and recent decisions continue to treat them as distinct.
The most typical form of common law estoppel is known as estoppel by representation. This arises when a party (representor) makes a representation of fact about an existing state of affairs to the other party (representee) and induces the representee to accept that state of affairs as true such that it relies on that representation to its detriment. For example, if the representor tells the representee that it has signed a contract when in fact it has not and the representee proceeds to follow the terms of that contract, the representor may be bound by those same terms as if it had signed the contract.
A representee seeking to rely on estoppel by representation must prove that:
Generally, the intention of the representor is irrelevant – estoppel by representation may be established regardless of whether the representor has acted innocently or fraudulently when making the representation.
An estoppel by convention arises when the parties have engaged in conduct based on a mutual assumption as to the terms of their legal relationship. In this case, both parties will be prevented from denying that the assumption forms the basis of their relationship. For example, if the parties to a contract interpret its words in a particular way and, to each other’s knowledge, conduct themselves in reliance on that interpretation, both parties may be bound to that interpretation regardless of whether it is correct.
The main distinguishing feature between estoppel by representation and estoppel by convention is that the former is founded on a unilateral inducement to adopt the relevant assumption, whereas the latter is founded on both parties’ mutual adoption of a conventional basis for their relationship. Another difference between the two is that estoppel by convention can be founded on an assumption of law as well as one of fact.
A party seeking to rely on estoppel by convention must establish that:
Common law estoppel is a means of tempering the unfair results that might eventuate if parties have departed from their actual legal rights and then one of them attempts to insist that those rights be strictly adhered to. Rather than being a cause of action in and of itself, common law estoppel operates as a rule of evidence to prevent a party from denying that its legal relationship with another party had changed. In this way, it allows the new arrangement between the parties to be enforced even though there is no binding contract to that effect.
Accordingly, it is important that parties are mindful that they may be held to account if they knowingly depart from the terms of their contract and then attempt to insist on their actual legal rights.
The Litigation and Dispute Resolution Team at McCabes is experienced at resolving contractual disputes, including cases in which a common law estoppel might arise.