delivered the opinion of the Court.
Employers in Texas generally do not owe a duty to third parties for the tortious activities of off-duty employees occurring off the work site.
Loram Maint. of Way, Inc. v. Ianni,
I
Nabors Drilling U.S.A., Inc., the largest land-based driller in the continental United States, hired nineteen-year-old Robert Ambriz to work in its oil fields. Nabors’s work schedule required that Ambriz work twelve-hour day shifts from 6:00 a.m. to 6:00 p.m. one week, take a week off, and then work twelve-hour night shifts from 6:00 p.m. to 6:00 a.m. the following week. After working approximately four months at several of Nabors’s sites, Ambriz was sent to work at Nabors’s McCook site, where he began with a week of night shifts. The supervisor inspected the crew the evening that Ambriz started his first shift, to ensure that the employees were fit to work. Ambriz’s shift ended at 6:00 a.m., and he left the site about ten minutes later. Just before he left, a coworker who did not believe that Ambriz looked or acted tired told Ambriz to stay at the work site in trailers provided by Nabors, but Ambriz chose to leave. While driving along a farm-to-market road at approximately 6:30 a.m., Ambriz crossed to the wrong side of the road and collided with a vehicle driven by Martin Rodriguez and occupied by Robert Escoto, Jose Gutierrez, and Leovarda Torres. The accident resulted in the death of Ambriz, Rodriguez, and all three passengers.
On behalf of themselves, the decedents’ estates, and others, Fransisca Escoto, Dora Rodriguez, and Noelia Torres (collectively, Escoto) sued Ambriz’s estate and Nabors. Escoto alleged that the negligence of both Ambriz and Nabors caused the collision, and sought various forms of money damages. The jury found that Am-briz was 57% responsible for the accident and Nabors was 43% responsible, and awarded Escoto $5.95 million. However, the trial court signed a take-nothing judgment, ruling that Nabors owed Escoto no duty. The court of appeals reversed, holding that Nabors owed the plaintiffs a duty and rejecting Nabors’s other arguments in support of the take-nothing judgment.
II
A
The existence of a duty is a question of law.
E.g., Tri v. J.T.T.,
We have recognized limited exceptions to that general rule, though. “[C]ertain relationships do impose, as a matter of law, certain duties upon parties.”
Otis,
1
In
Otis Engineering Corp. v. Clark,
plaintiffs sued Otis Engineering Corp. for wrongful death after Robert Matheson, an Otis employee, caused a fatal automobile accident shortly after leaving work.
Otis began its duty analysis with the familiar observation that the “factors which should be considered in determining whether the law should impose a duty are the risk, foreseeability, and likelihood of injury weighed against the social utility of the actor’s conduct, the magnitude of the burden of guarding against the injury and consequences of placing that burden on the employer.” Id. at 309. But Otis viewed the ultimate question simply: “What we must decide is if changing social standards and increasing complexities of human relationships in today’s society justify imposing a duty upon an employer to act reasonably when he exercises control over his servants.” Id. at 310. Otis formulated the resulting duty principle by focusing on the existence of an incapacity, a sufficient risk of harm, and the employer’s control over the employee:
Therefore, the standard of duty that we now adopt for this and all other cases *406 currently in the judicial process, is: when, because of an employee’s incapacity, an employer exercises control over the employee, the employer has a duty to take such action as a reasonably prudent employer under the same or similar circumstances would take to prevent the employee from causing an unreasonable risk of harm to others. Such a duty may be analogized to cases in which a defendant can exercise some measure of reasonable control over a dangerous person when there is a recognizable great danger of harm to third persons.
Otis,
The court of appeals imposed a duty based on evidence that Nabors was aware of the dangers of fatigue and that a coworker from the night shift before the accident testified that the shift was particularly exhausting, and “we were all tired.”
Even if Nabors satisfied the knowledge component of the duty analysis, “simply knowing that an employee is intoxicated or incapacitated is not enough for a duty to arise. Rather, the employer must
affirmatively
exercise control over the incapacitated employee.”
Ianni,
Every other court of appeals to address the issue has rejected such a duty.
See Duge,
2
Escoto also argues that, under
D. Houston, Inc. v. Love,
the work conditions demanded by Nabors created a duty to take reasonable steps to prevent an off-duty employee’s automobile accident caused by fatigue.
See
If [the employer] required Love to consume alcohol at work, it may well have compromised Love’s ability to judge whether she was fit to drive. Therefore, we decline to hold as a matter of law that Love bears sole legal responsibility for her actions.
Likewise, some might argue that [the employer] could not foresee that its negligence, if any, might have harmed Love. However, [the employer] allegedly required its worker to consume alcohol when she might not otherwise have chosen to do so. If proven, that conduct would impose a duty on [the employer] under Texas law....
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We hold that when an employer exercises some control over its independent *409 contractor’s decision to consume alcoholic beverages to the point of intoxication, such that alcohol consumption is required, the employer must take reasonable steps to prevent foreseeable injury to the independent contractor caused by drunk driving.
Id. at 456-57. Despite language restricting the holding to the limited facts, Escoto argues that Love is not limited to intoxication and applies generally to fatigue caused by workplace conditions.
Although we did recognize a duty to the independent contractor in Love, the facts of this case are significantly different, and nothing in Love demands that we recognize a duty to the general public in the fatigue context. In Love, drinking to the point of intoxication was a condition of employment, and the nightclub owner knew that Love would be impaired. Id. at 452, 454-56. In fact, Love’s objectively measurable blood alcohol content was so high that her doctor opined she would have been “unmistakably intoxicated to anyone coming in contact with her ... well beyond being too intoxicated to drive.” Id. at 452. The record in the present case does not support a conclusion that impairment was a condition of Ambriz’s employment, or even that it was an inevitable consequence of working for Nabors. In addition, the record does not establish actual knowledge of impairment, as we required of the employer in Otis and as was present in Love. The record in this case contains evidence that a coworker thought everyone who worked the shift must have been tired, but that same coworker testified that Ambriz did not look or act tired at the end of his shift, and that he spoke coherently with others for ten minutes before driving home. On these facts, we conclude that the limited duty recognized in Love does not apply.
Escoto argues that the principles expressed in
Otis
and
Love,
taken together, apply equally to employee fatigue. But we have never extended liability under these intoxication cases to incapacity related to fatigue, and we are not persuaded that we must do so now.
4
In fact, in
Loram Maintenance of Way, Inc. v. Ianni,
a case that did not involve employee intoxication, we held that an employer owes no duty to protect the public from an employee’s wrongful off-duty conduct.
We note that fatigue is distinguishable from intoxication in significant respects. Unlike intoxication, there is no quantitative physical measure of fatigue that could be used to determine whether an employee is impaired. Cf. Tex. Penal Code § 49.01(2)(B) (establishing measurable legal blood alcohol limit of intoxication). An employer could inspect its employees for signs of fatigue at the end of each shift, as Nabors did at the beginning of each shift, but it is not clear that an employer could consistently judge when employees have gone beyond tired and become impaired. In addition, unlike intoxication, it is not clear that employers could effectively prevent impairment due to fatigue because amounts and types of work will affect employees differently, and an employee’s off-duty conduct will affect when and how the employee may become fatigued.
3
Even if
Otis
and
Love
do not impose a duty, Escoto urges the Court to recognize a new duty on Texas employers whose work conditions may contribute to fatigue in an off-duty employee. The decision to impose a new common law duty involves complex considerations of public policy including “social, economic, and political questions and their application to the facts at hand.”
Humble Sand & Gravel, Inc. v. Gomez,
Considering the large number of Texans who do shift work and work long hours
*411
(including doctors, nurses, lawyers, police officers, and others), there is little social or economic utility in requiring every employer to somehow prevent employee fatigue or take responsibility for the actions of off-duty, fatigued employees. In
Love,
there was little or no social value involved in a nightclub owner compelling its employees to drink to intoxication while working. In this case, however, there is undeniable utility in allowing employers to require a productive day’s work from its employees, even when shifts may be long.
See Nat’l Convenience Stores, Inc. v. Matherne,
Escoto argues that Nabors affirmatively created a dangerous situation that posed a foreseeable risk to the public. Unlike
Otis
and
Love,
in which supervisors put clearly intoxicated workers on the road, Nabors did nothing to affirmatively create a risk of fatigue-related, off-duty accidents. Na-bors merely established a shift work schedule and allowed its employees to decide for themselves if they were too tired to drive following their shifts. Under these facts, we cannot say that Nabors created any significant foreseeable risk of harm to Texas motorists.
See Swett v. United States,
No. 8:06-CIV-1805-T-24TGW,
Even if we assume that injury to third persons from employee fatigue is sufficiently foreseeable, foreseeability alone is not sufficient to create a new duty.
See, e.g., Love,
B
Escoto also argues that Nabors had an independent duty to train its employees, especially inexperienced employees, regarding the dangers of fatigue. Having held that there is no employer duty with respect to off-duty accidents involving fatigue, we also decline to create a new duty requiring employers to train employees about fatigue.
In the employment context, an employer has a duty to “warn an employee of the hazards of employment and provide needed safety equipment or assistance.”
Jack in the Box, Inc. v. Skiles,
Ill
We hold that Nabors owed no duty to prevent injuries resulting from fatigue following an employee’s shift-work schedule. We further hold that Nabors owed no duty to train its employees regarding the dangers of fatigue. We need not reach Na-bors’s remaining issues. Accordingly, we reverse the court of appeals’ judgment and reinstate the trial court’s judgment.
Notes
.
Cf. Buchanan v. Rose,
.
See also Duge v. Union Pac. R.R. Co.,
. Other states also require an element of affirmative employer control before finding a duty to prevent fatigue-related accidents.
See Ex Parte Shelby County Health. Care Auth.,
.
See also Duge,
. There is some debate among commentators about how questions of duty should be analyzed and whether we should apply a broad definition of duty, leaving questions regarding the reasonableness of defendants' conduct to juries, or apply more particularized, narrow duty rules that would shift some of the normative determinations to the courts. See generally William V. Dorsaneo, III, Judges, Juries, and Reviewing Courts, 53 SMU L.Rev. 1497, 1531-33 (2000); William Powers, Jr., Judge and Jury in the Texas Supreme Court, 75 Tex. L.Rev 1699, 1699-1719 (1997). The final draft of the Restatement (Third) of Torts: Liability for Physical Harm, which has been approved by the American Law Institute but not yet published in final form, recognizes this conflict. See Restatement (Third) of Torts: Liability for Physical Harm, Chapter 3, § 7 (Proposed Final Draft No. 1, 2005). Comment a to section 7 states:
[Ajctors engaging in conduct that creates risks to others have a duty to exercise reasonable care to avoid causing physical harm. In most cases, courts can rely directly on § 6 and need not refer to duty on a case-by-case basis. Nevertheless, in some • categories of cases, reasons of principle or policy dictate that liability should not be imposed. In these cases, courts use the rubric of duty to apply general categorical rules withholding liability.
Id. § 7 cmt. a. The parties presented the issue in this case as a duty question, and we apply duty principles in analyzing whether employers owe a duty to protect the public from accidents cause by fatigued, off-duty employees.
. Several other states have also declined to hold employers liable as a matter of law for employees’ off-duty, fatigue-related automobile accidents.
See, e.g., Shelby County Health Care Auth.,
