Undue influence: Encyclopedia - Undue influence
Undue influence
Undue influence (as a term in jurisprudence) is an equitable doctrine that involves one person taking advantage of a position of power over another person.
Undue influence - Undue influence in contract law
If undue influence is proved in a contract (at least in Australia), the contract is voidable by the innocent party, and the remedy is rescission. There are two categories to consider:
- Presumed undue influence
- Actual undue influence
Undue influence - Presumed undue influence
In the first subgroup, the relationship falls in a class of relationships that as a matter of law will raise a presumption of undue influence. Such classes include:
- Parent/child
- Guardian/ward
- Priest/member of parish
- Solicitor/client
- Doctor/patient
In such cases, the onus of proof lies on a doctor, say, to disprove undue influence on a patient.
The second subgroup covers relationships that do not fall into the first subgroup, but on the facts of case, there was an antecedent relationship between the parties that led to undue influence. The test is one of whether there was a relationship of such trust and confidence that it should give rise to such a presumption (see Johnson v. Buttress (1936) 56 CLR 113).
Undue influence - Actual undue influence
An innocent party may also seek to have a contract set aside for actual undue influence, where there is no presumption of undue influence, but there is evidence that the power was unbalanced at the time of the signing of the contract.
Compare with duress (contract law)
Undue influence - Undue influence in probate law
"Undue Influence" is the most common ground for will contests and are often accompanied by a capacity challenge. In probate law it is generally defined as a testator's loss of free agency regarding property disposition through contemporaneous psychological domination by an advisor which results in an excessive benefit to the advisor. It is important to note that "undue influence" is only an issue when the advisor is benefiting, not when advisor is getting a benefit for someone else; in that case it would be considered fraud. In litigation most jurisdictions place the burden of proving undue influence on the party challenging the will.
See also
- Compare with duress (contract law)
Categories: Contract law | Wills and trusts | Equitable defenses
 Adapted from the Wikipedia article "Undue influence", under the G.N U Free Docmentation License. Please also see http://en.wikipedia.org/wiki | 
