The opinion of the Court was delivered by
In this strict products liability case involving one defendant, the primary issue is whether the doctrine of res ipsa loquitur should be applied when liability is based upon an alleged manufacturing defect. The trial court declined to instruct the jury regarding res ipsa loquitur. The Appellate Division held that the trial court should have given such an instruction. We disagree and reverse. We hold that the traditional negligence doctrine of res ipsa loquitur generally is not applicable in a strict products liability case. We adopt, however, the “indeterminate product defect test” established in Section 3 of the Restatement (Third) of Torts: Products Liability as the more appropriate jury instruction in cases that do not involve a shifting of the burden of persuasion.
I
On July 6, 1991, plaintiff, John Myrlak, was injured when his chair collapsed while he was at work. At that time, plaintiff was forty-three years old, six feet six inches tall, and weighed approximately 325 pounds. Plaintiff was employed as an assistant train-master for the Port Authority Trans-Hudson Corporation *91 (PATH). He worked at the Hoban Control Center at Journal Square in Jersey City. Plaintiff usually performed his duties while seated in a movable desk chair that was positioned at a semicircular console, approximately eight feet long and three feet high.
At the time of the accident, plaintiff had been seated in the chair performing his duties for approximately one hour and forty-five minutes. He suddenly heard a loud noise, and the back of his chair cracked and gave way. Plaintiff and the chair fell backwards, causing both to land parallel to the floor. Plaintiff grabbed the arms of the chair and pulled himself forward as he was falling. He injured his lower back and was hospitalized.
Although no one other than the plaintiff actually saw the accident, several PATH employees testified that they heard either a clicking or ratcheting sound, or a loud noise like a grinding of gears. After the accident, those employees observed that the back of the chair had collapsed and was parallel to the floor. A co-worker stated that he touched the back of the chair after the accident and it appeared to be flopping back and forth. Another co-worker testified that he sat in the chair the day following the accident and found it lacked back support.
The chair involved in the accident was manufactured by defendant Girsberger Industries, Inc. It was one of five hundred chairs purchased by PATH at the same time from the same company. All of the chairs were delivered to PATH either on November 1, 1990, or on May 1, 1991, and were placed in use at the Hoban Control Center on June 1, 1991. Thus, the chair that caused plaintiffs accident had been in use for five weeks.
The chair had a high backed seat with a triple joint construction that allowed the seat to follow the user’s movement by adjusting two levers. One of the levers positioned the chair in either a locked or a “free flow” mode; the other lever adjusted the height of the chair. The chair was also equipped with a tension control mechanism underneath the seat to adjust the tension of the chair’s back according to the user’s need or desire. Plaintiff was familiar with the chair and its operation.
*92 There was no evidence that the chair had been misused by plaintiff or any other PATH employee. The chair, however, was not used exclusively by plaintiff. On the contrary, it was customarily used by several different PATH employees twenty-four hours each day. Although some of the PATH employees who used the chair were similar in size to plaintiff, none of them ever reported any similar incidents or complaints with regard to the chair.
Plaintiff instituted the present litigation against PATH under the Federal Employer’s Liability Act (FELA), claiming that PATH failed to provide a safe workplace and was negligent in providing him with a chair that was too small for a man his size. He also filed products liability claims against the manufacturer of the chair alleging both a manufacturing and a warning defect theory of liability. Pretrial discovery left some uncertainty concerning whether the chair examined by plaintiffs expert and displayed in the court room during the trial was the same chair that was involved in the accident. However, PATH maintains that they are one and the same. To support its position, PATH presented evidence regarding the chain of custody of the chair.
Joseph Bardzilowski, Coordinator of Rail Operations for PATH, testified that he saw the chair the day after the accident and that it looked normal to him. He stated that the chair had been moved from the trainmaster’s/assistant trainmaster’s area to a vacant area next to the desk. He also testified that the chair had a note on it that read “Do not use.” At Bardzilowski’s request, the chair was removed from the Control Center and placed into a supply room on the seventh floor at Journal Square the day after the accident. Anne DiNicola, a clerk employed by PATH, testified that at the request of Bardzilowski, she tagged the chair to prevent further use. Kevin Duffy testified that at the request of his supervisor, he removed the chair from the supply closet at Journal Square and placed it in the evidence closet at the World Trade Center where it remained until he brought it to court. Duffy further testified that the evidence closet was locked and the *93 only persons with keys were himself and an administrative assistant. He was not aware of anyone tampering with the chair. The chair was taken from the evidence room and presented as an exhibit at the trial.
Plaintiffs expert was unable to duplicate the accident with the chair that was presented as evidence. Plaintiffs expert was not permitted to disassemble the chair, perform a failure analysis on it, or test any of its internal parts. He was allowed to operate the chair only by using the control levers. No application was addressed to the trial court to perform a more detailed analysis of the chair. The expert was unable to identify a specific defect in the chair; nor could he state that a defect caused the accident. On the issue of PATH’S negligence, plaintiffs expert testified that the chair was too small for a person plaintiffs size and weight.
At the close of all of the evidence, plaintiff requested the court to charge the jury on res ipsa loquitur regarding the manufacturing defect claim. In denying the requested charge, the trial court stated that it wanted to avoid that phrase even though plaintiff relied on circumstantial evidence to infer that there was a manufacturing defect. The jury found PATH was negligent in failing to provide plaintiff with a safe workplace and awarded plaintiff 1.5 million dollars. The jury also found that plaintiff failed to establish a manufacturing defect in the chair.
PATH appealed and plaintiff cross-appealed. In a reported opinion, the Appellate Division reversed both verdicts and remanded for a new trial. 302
N.J.Super.
1,
*94 II
Defendant Girsberger Industries, Inc. argues that the Appellate Division’s opinion constitutes an unwarranted expansion of the doctrine of res ipsa loquitur into the field of strict products liability. It maintains that using res ipsa loquitur to create an inference that the product was defective violates the New Jersey Products Liability Act, N.J.S.A. 2A:58(c)-l to -ll(Act).
Defendant Girsberger also maintains that by allowing a res ipsa loquitur instruction, a plaintiff can proceed under a manufacturing defect theory without evidence of any specific defect. This, the defendant contends, improperly relieves the plaintiff of his burden of proof. An evaluation of plaintiff’s claim in this case involves an analysis of both the tenets of products liability law and the traditional negligence doctrine of res ipsa loquitur.
-A-
The res ipsa loquitur doctrine derives its roots from the common law of England. The first reported decision to apply the doctrine in a case not involving railway collisions between two trains on the same line was Byrne v. Boadle, 159 Eng. Rep. 299, 300 (Exch. of Pleas 1863). That case involved a barrel of flour that fell and struck a passerby on a street as the barrel was being lowered from a window by a flour merchant. The court held that there “are certain cases [other than the train collision cases] of which it may be said res ipsa loquitur, and this seems one of them.” Ibid. The court permitted a presumption of negligence, reasoning that it was “apparent that the barrel was in the custody of the defendant who occupied the premises, ... and ... the fact of its falling is prima facie evidence of negligence, ..., but if there are any facts inconsistent with negligence it is for the defendant to prove them.” Id. at 301. A quarter of a century after Byrne was decided, a discussion of the doctrine first appeared in a reported decision in this State. Bahr v. Lombard, Ayres & Co., 53 N.J.L. 233, 240-41, 21 A. 190 (E. & A. 1890) (Beasley, C.J., dissenting). Within five years thereafter, the doctrine had gained widespread *95 acceptance in New Jersey. Excelsior Elec. Co. v. Sweet, 57 N.J.L. 224, 228-29, 80 A. 553 (E. & A. 1894).
Res ipsa loquitur,
which in Latin means “the thing speaks for itself,” is a rule of law that has its origin in negligence and “governs the availability and adequacy of evidence of negligence in special circumstances.”
Brown v. Racquet Club of Bricktown,
95
N.J.
280, 288,
Whether an occurrence ordinarily bespeaks negligence is based on the probabilities in favor of negligence. Hence,
res ipsa
is available if it is more probable than not that the defendant has been negligent.
Buckelew, supra,
87
N.J.
at 526,
-B-
In a products liability case in which the plaintiff alleges a manufacturing defect under the Act, the plaintiff has the burden to prove “the product causing the harm was not reasonably fit, suitable or safe for its intended purpose.”
N.J.S.A.
2A:58C-2. In the typical manufacturing defect case, a plaintiff is not required to establish negligence.
See Zaza v. Marquess and Nell, Inc.,
144
N.J.
34, 49,
The Act defines a manufacturing defect as a deviation “from the design specifications, formulae, or performance standards of the manufacturer or from otherwise identical units manufactured to the same manufacturing specifications or formulae.”
N.J.S.A
2A:58C-2a. The Act left unchanged the three theories under which a manufacturer or seller may be held strictly liable for harm.
Jurado v. Western Gear Works,
131
N.J.
375, 384,
Simply because a plaintiff is not required to prove fault in a strict liability case does not mean that absolute liability will be imposed upon a manufacturer. Although a plaintiff is relieved of proving fault, that plaintiff must nonetheless prove that the product was defective under our common law jurisprudence that was incorporated into the Act.
See Jurado, supra,
131
N.J.
at 384,
A product is deemed to be defective if it is not reasonably fit, suitable, or safe for the ordinary or foreseeable purpose for which it is sold.
See Waterson, supra,
111
N.J.
at 267,
To prove both the existence of a defect and that the defect existed while the product was in the control of the manufacturer, a plaintiff may resort to direct evidence, such as the testimony of an expert who has examined the product, or, in the absence of such evidence, to circumstantial proof.
Scanlon v. General Motors Corp.,
65
N.J.
582, 591,
Under the
Scanlon
circumstantial evidence method of proving a product defect, the fact that a product is relatively new does not suffice by itself to establish a defective condition.
Scanlon, supra,
65
N.J.
at 592-93,
In addition to the direct and circumstantial evidence methods of proving a product defect, a plaintiff has a third option. A plaintiff may establish a defect by “negat[ing] other causes of the failure of the product for which the defendant would not be responsible, in order to make it reasonable to infer that a dangerous condition existed at the time the defendant had control [of the product].”
Id.
at 593-94,
-C-
Based on the foregoing legal principles synthesized from our products liability and res ipsa loquitur jurisprudence, it is evident that there are some technical differences between using res ipsa loquitur as a method of proving negligence and using that doctrine to prove a product defect in strict products liability cases. Res ipsa loquitur is a doctrine created under the fault theory of negligence as a means of circumstantially proving a defendant’s lack of due care. Strict products liability, on the other hand, is a theory of liability based upon allocating responsibility regardless *100 of a defendant’s unreasonableness, negligence, or fault. Nonetheless, except in those rare cases in which the application of res ipsa loquitur also involves a shifting of the burden of persuasion, there may be sound reasons to adopt a res ipsa-like method of circumstantially proving a product defect.
Apart from the theoretical differences between strict products liability and the doctrine of res ipsa loquitur, we must determine whether the Legislature’s intent in passing the Act militates against the use of res ipsa as a method of establishing the existence of a defect in strict products liability cases. The Act provides that manufacturing defect claims “are to be determined according to the existing common law of the State.” Comment to N.J.S.A. 2A:58C-1; see also Judiciary Committee, Statement to Senate Bill No. 2805, at 1 (March 23, 1987). The Act also provides that unless stated otherwise, it was not the intent of the Act to establish or alter any existing rules “with respect to the burden of proof in a product liability action.” N.J.S.A. 2A:58C-7.
In
Corbin v. Camden Coca-Cola Bottling Co.,
60
N.J.
425, 435-36,
Anderson
and its progeny are cases involving unique circumstances in which a clearly helpless or anesthetized plaintiff suf
*101
fered physical injury as a result of acts involving multiple defendants. In those cases, “it was apparent that at least one of the defendants was hable for plaintiffs injury because no alternative theory of liability was within reasonable contemplation.”
Anderson, supra,
67
N.J.
at 298,
There is no precedent in this State .permitting a
res ipsa loquitur
charge in a commonplace products liability case that involves only a single defendant. A few other jurisdictions, however, have permitted the use of that doctrine. In
Williams v. Emerson Elec. Co.,
909
F.Supp.
395, 398 (D.La.1995), a district court permitted a 275-pound plaintiff who fell from a ladder after it buckled beneath him to use the doctrine to prove that a manufacturing defect might have caused the accident.
Id.
at 396, 399. A Louisiana appellate court had previously reached a similar conclusion in
State Farm Mut. Auto. Ins. Co. v. Wrap-On Co.,
The majority of jurisdictions that have addressed the issue do not allow
res ipsa loquitur
to be used in a strict products liability cause of action. Jonathan M. Hoffman,
Res Ipsa Loquitur and Indeterminate Product Defects: If They Speak for Themselves, What Are They Saying?,
36
S. Tex. L.Rev.
353, 373 (1995).
See
*102
generally Whitted v. General Motors, Corp.,
We agree with the majority of jurisdictions that, ordinarily, the traditional
res ipsa loquitur
jury charge should not be used in strict products liability actions. As noted previously,
res ipsa loquitur
is a negligence doctrine; it is a circumstantial means of proving a defendant’s lack of due care.
Tierney, supra,
214
N.J.Super.
at 30,
Even if we were to hold that the doctrine should be applied to a commonplace products liability case involving a single defendant, the trial court properly refused to give the jury a
res ipsa loquitur
charge in the present case. The chair had been in use for about five weeks. It was used twenty-four hours a day by at least three different persons of various weights and sizes. Although there was no evidence of misuse, multiple intended users had many opportunities to adjust the tension on the back of the chair to meet their personal needs. It cannot be said that simply because the back of the chair collapsed when plaintiff placed his weight against it, the chair was defective. The accident could not be replicated and no defect was found by any expert. The proofs — direct, circumstantial, and that negating of other causes— simply failed to show that collapse of the chair while the 325-pound plaintiff sat in it meant the chair was defective based on a balancing of the probabilities.
See Lynch v. Galler Seven-Up Pre-Mix Corp.,
74
N.J.
146, 153,
-D-
We recognize that as an alternative to a traditional res ipsa loquitur instruction, various states and commentators have advocated an intermediate-type approach for circumstantially proving the existence of a product defect. That approach appears to best serve the interest of all parties and is not inconsistent with the Act.
The Scanlon rule regarding circumstantial proof of a defect in a strict products liability case was adopted recently in *104 the Restatement (Third) of Torts: Products Liability. It provides:
It may be inferred that the harm sustained by the plaintiff was caused by a product defect existing at the time of sale or distribution, without proof of a specific defect, when the incident that harmed the plaintiff:
(a) was of a kind that ordinarily occurs as a result of a product defect; and
(b) was not, in the particular case, solely the result of causes other than product defect existing at the time of sale or distribution.
[Restatement (Third) of Torts § 3 (1997).]
The Restatement test for circumstantial evidence of a product defect is similar to res ipsa loquitur in that it is an inferential test. Our Model Jury Charge on res ipsa loquitur instructs the jury:
[I]f you find by the greater weight of the evidence that at the time of the incident (1) the defendant had exclusive control of the instrumentality causing the occurrence, (2) that the circumstances were such that in the ordinary course of events the incident would not have occurred if the defendant had exercised reasonable care and (3) plaintiffs voluntary act or negligence did not contribute to the occurrence, then you may infer that the defendant was negligent.
[Model Jury Charge (Civil) § 5.13.]
Although Section 3 of the Restatement is based on a
res ipsa
model, it permits the jury to draw two inferences: that the harmful incident was caused by a product defect, and that the defect was present when the product left the manufacturer’s control. The
res ipsa loquitur
doctrine, on the other hand, creates the single inference of negligence. Nevertheless, Section 3 of the Restatement parallels the elements of our
res ipsa loquitur
doctrine. As noted previously, the requirements that the product was in the defendant’s exclusive control at the time of the harmful incident under
res ipsa loquitur,
and that the defect occurred before the product left the control of the manufacturer, can be satisfied through direct and circumstantial evidence as well as by evidence negating other causes for the failure of the product for which the defendant would not be responsible. Moreover, even those jurisdictions that find that
res ipsa
is not specifically applicable to a strict products liability action have recognized that the inferences and principles that form the core of
res ipsa
“merely instantiates the broader principle, which is as applicable to a products case as to any other tort case, that an accident can
*105
itself be evidence of liability [,] ... if it is reasonably plain that the defect was not introduced after the product was sold.”
Welge, supra,
Section 3 of the Eestatement has been referred to as the “indeterminate product test” because its use is limited to those product liability cases in which the plaintiff cannot prove a specific defect. Hoffman, supra, 36 S. Tex. L.Rev. at 356. A plaintiff can satisfy the requirements of Section 3 of the Eestatement the same way as in the case of res ipsa loquitur, by direct and circumstantial evidence as well as evidence that negates causes other than product defect.
Other jurisdictions have adopted similar circumstantial methods for establishing an inference of a product defect in strict products liability cases. We agree with those states that in some cases, “common experience indicates that certain accidents do not occur absent some defect,” and therefore an inference of a defect under specific circumstances should be permitted. Matthew E. Johnson, Note,
Rolling the “Barrel” a Little Further: Allowing Res Ipsa Loquitur to Assist in Proving Strict Liability in Tort Manufacturing Defects,
38
Wm. & Mary L.Rev.
1197, 1225 (1997).
See also Williams, supra,
292
Ark.
at 382,
Our decision to adopt Section 3 of the Eestatement is compelled by the decisional law in this State.
Alloway v. General Marine Indus.,
149
N.J.
620,
Because the historical antecedent to Section 3 of the Eestatement is traceable to the negligence doctrine of res ipsa loquitur, the American Law Institute was mindful of the parallel between drawing an inference of negligence in an appropriate case and drawing an inference of product defect under similar circumstances when it approved Section 3 of the Eestatement. That section was adopted to “set forth the formal requisites for drawing an inference” in some product defect cases. Eestatement § 3, comment a.
Consequently, Section 3 of the Eestatement in a products liability case does precisely what res ipsa loquitur does in a *107 negligence context. We are persuaded, therefore, that our adoption of Section 3 of the Restatement is consistent with the policy that drives res ipsa. Like our traditional res ipsa loquitur charge, there is no shifting of the burden of proof under a jury charge based on Section 3 of the Restatement.
Our independent review of the record, including a consideration of the jury charge as a whole,
State v. Wilbely,
63
N.J.
420, 422,
Ill
Finally, we must decide whether our reversal of the Appellate Division’s requirement of a res ipsa loquitur charge nonetheless requires a new trial on the products liability claim.
One of the reasons the Appellate Division reversed the judgment in favor of PATH was because the trial court excluded opinion testimony from Stan Johnson, Girsberger’s plant manager. 302
N.J.Super.
at 9-10,
In view of the Appellate Division’s analysis, it is apparent that vacating the judgment in favor of Girsberger was not based solely on the trial court’s failure to charge the jury regarding res ipsa loquitur. Rather, the reversal was based on both the absence of a res ipsa loquitur charge and the exclusion of evidence vital to plaintiffs ability to establish a manufacturing defect. Consequently, a new trial is required on plaintiffs strict products liability claims as well.
Because we have adopted Section 3 of the Restatement, upon retrial, plaintiff need not prove a specific defect in the chair if he can establish that the incident that harmed him is of the kind that ordinarily occurs as a result of a product defect, and that the incident was not solely the result of causes other than product defect existing at the time the chair left Girsberger’s control. Restatement (Third) of Torts § 3(a) and (b). If plaintiff cannot satisfy those requirements, he is not entitled to have the jury charged regarding an inference of a product defect, and plaintiff would be obligated to establish one or more manufacturing defects required by the Act, N.J.S.A. 2A:58C-2a.
That part of the Appellate Division’s judgment requiring a res ipsa loquitur charge on the manufacturing defect claim is reversed. The matter is remanded to the Law Division for further proceedings as otherwise directed by the Appellate Division.
*109 For affirmance in part; reversal in part — Chief Justice PORITZ and Justices HANDLER, POLLOCK, O’HERN, GARIBALDI, STEIN, and COLEMAN — 7.
Opposed — None.
