What is undue influence in a contract?

Undue influence is when someone exploits a position of trust or authority to pressure another person into a contract that does not reflect their free and informed choice.

How is undue influence different from duress?

Duress involves overt threats or coercion. Undue influence is subtler, arising from a relationship of trust where one party manipulates the other without explicit threats.

Can a contract be voided for undue influence?

Yes. If undue influence is proven, the contract is voidable by the influenced party. Courts may also look at whether the terms were unusually one-sided as evidence of influence.

Undue Influence in Contracts: When Trust Is Exploited

What Is Undue Influence?

Undue influence occurs when one party uses a position of trust, authority, or psychological dominance to pressure another into entering a contract that does not reflect their free will. Unlike duress, which involves overt threats, undue influence is subtler — it exploits an existing relationship of confidence.

Relationships at Risk

Undue influence claims most commonly arise in relationships where one party naturally trusts or depends on the other:

Fiduciary relationships — attorney-client, financial advisor-client, trustee-beneficiary
Family relationships — parent-child, caregiver-elderly person
Professional authority — doctor-patient, clergy-parishioner
Employment — employer-employee, especially where power imbalances are significant

Two Forms of Undue Influence

Actual undue influence — the claimant proves specific acts of persuasion or manipulation that overcame their free will
Presumed undue influence — when a relationship of trust exists and the transaction is suspicious (e.g., heavily favoring the dominant party), the burden shifts to the dominant party to prove the agreement was entered freely

Factors Courts Consider

The vulnerability of the influenced party (age, health, mental state)
The relationship and relative power between the parties
Whether independent legal advice was available or encouraged
Whether the terms are fair or heavily one-sided
The circumstances surrounding the signing (isolation, urgency, secrecy)

Protecting Against Claims

Parties in a position of influence can protect themselves by ensuring the other party receives independent legal counsel, allowing adequate time for review, and documenting that the decision was made freely.

When to Consult a Lawyer

Consider consulting an attorney if you believe someone in a position of trust pressured you or a family member into an unfavorable agreement.

This article is for informational purposes only and does not constitute legal advice. Consult a licensed attorney for guidance specific to your situation.