Also known as:doctrine of deviation · deviation doctrines · deviation
Written by attorneys · grounded in primary & secondary sources — see below
3 senses
1
in criminal law
A standard of culpability under which a person's conscious disregard or failure to perceive a substantial and unjustifiable risk constitutes recklessness or negligence when the disregard or failure involves a gross deviation from the standard of conduct a reasonable person would observe in the actor's situation.
2
in trust law
An equitable principle that permits a court to modify administrative or dispositive provisions of a trust when circumstances not anticipated by the settlor would defeat or substantially impair the accomplishment of the trust's purposes.
3
in contract law
A rule drawn from admiralty practice that treats a carrier's unjustified departure from the usual or agreed route as a material breach that deprives the carrier of contractual limitations and exemptions.
Each sense below has its own examples, sources, and questions.
Sense 1
1
in criminal law
A standard of culpability under which a person's conscious disregard or failure to perceive a substantial and unjustifiable risk constitutes recklessness or negligence when the disregard or failure involves a gross deviation from the standard of conduct a reasonable person would observe in the actor's situation.
Sources & Authorities· 4 primary sources
Select any source to read its text and confirm it supports the definition.
Model Codes
Common Law
Examples4
Forklift Collision During Stunt
Quentin approved a live stunt in which contestants ran through a warehouse while forklifts operated at high speed without barriers or spotters. A forklift struck and killed a contestant. The production had received an explicit safety warning that the setup created an obvious probability of death. Quentin's approval despite that warning supplied the gross deviation required for criminal negligence.
Conscious Disregard of Known Risk
A warehouse manager ordered workers to continue operating a defective conveyor despite daily reports that the machine could eject heavy materials without warning. When a worker was struck and killed, the manager's decision to proceed after receiving those reports demonstrated conscious disregard of a substantial risk that a law-abiding person would not have ignored.
Unlicensed Heavy Equipment Operation
A site supervisor directed an unlicensed operator to move a loaded skid-steer loader across a public street at night to assist a relative. The loader struck a parked car and killed its occupant. The supervisor's choice to use unlicensed personnel for a dangerous task created a substantially greater deviation from reasonable conduct than ordinary civil negligence.
Frequently Asked2
What distinguishes criminal negligence from ordinary civil negligence under the deviation doctrine?+
Criminal negligence requires a substantially greater deviation from the conduct of a reasonable person than the level of negligence that suffices for civil liability. The deviation must create a high risk of death or serious bodily harm.
Supporting sources
How does the MPC define the gross deviation required for recklessness?+
The risk disregarded must be of such a nature and degree that its disregard involves a gross deviation from the standard of conduct a law-abiding person would observe in the actor's situation, considering the nature and purpose of the conduct and the circumstances known to the actor.
Supporting sources
Sense 2
2
in trust law
An equitable principle that permits a court to modify administrative or dispositive provisions of a trust when circumstances not anticipated by the settlor would defeat or substantially impair the accomplishment of the trust's purposes.
Sources & Authorities· 2 primary sources
Select any source to read its text and confirm it supports the definition.
Cases
Examples1
Special Needs Trust Conversion
A settlor created a trust that directed outright distribution of the remainder to a disabled beneficiary upon the life tenant's death. After the settlor died, the beneficiary's medical expenses threatened to consume the entire corpus. A court authorized conversion of the outright remainder into a special needs trust because the change preserved assets and fulfilled the settlor's intent under unanticipated circumstances.
Frequently Asked2
When may a court modify dispositive trust terms under the deviation doctrine?+
A court may modify dispositive provisions when circumstances not anticipated by the settlor would defeat the trust's purposes, as when conversion to a special needs trust preserves assets for a disabled beneficiary and better fulfills the settlor's intent.
Supporting sources
Does the deviation doctrine allow modification of administrative terms only, or also dispositive terms?+
Traditional doctrine permitted deviation from administrative terms but not dispositive terms. The Uniform Trust Code expands the doctrine to allow modification of either when unanticipated circumstances would impair the trust's purposes.
Supporting sources
Sense 3
3
in contract law
A rule drawn from admiralty practice that treats a carrier's unjustified departure from the usual or agreed route as a material breach that deprives the carrier of contractual limitations and exemptions.
Sources & Authorities· 1 source
Select any source to read its text and confirm it supports the definition.
Cases
Examples1
Unplanned Port Call
A carrier contracted to transport goods from New York to Lisbon but diverted to a port in Brazil to pick up additional cargo for its own account. The diversion extended the voyage and exposed the goods to new perils. The carrier thereby lost the benefit of contractual limitations that would otherwise have applied to the loss.
Transatlantic Financing Corp. v. United States363 F.2d 312 (D.C. Cir. 1966)
Frequently Asked1
What consequence follows when a carrier makes an unreasonable deviation from the agreed route?+
An unreasonable deviation cancels insurance coverage and causes the carrier to forfeit the protection of contractual exceptions that would otherwise limit liability.
A producer scheduled a high-speed forklift stunt without barriers after receiving a written report that the layout created an obvious probability of death. The producer should have been aware of the risk yet approved the event anyway. That failure to perceive the danger constituted a gross deviation from the care a reasonable person would have exercised.
, require us to imply into the contract the term that the voyage was to be performed by the “usual and customary” route. The usual and customary route from Texas to Iran was, at the time of…
. II. THE TRIAL COURT ABUSED ITS DISCRETION IN AWARDING ATTORNEY FEES TO THE PLAINTIFF-APPELLEE. III. THE TRIAL COURT ABUSED ITS DISCRETION IN ITS PROPERTY SETTLEMENT[.] A. THE TRIAL…
for many decades, is at least reasonable; the agency’s reading is therefore entitled to this Court’s deference under Chevron , 467 U. S. 837. Chevron deference is appropriate “when it…
or omission.” Id. , at 97. The jury returned a verdict for respondent, and determined that the damages were $30,513.40. Id. , at 113. Judgment was entered. Id. , at 115. Both respondent…
Constitutional LawIndividual rights · Equal protectionUBEIntermediate