The opinion of the Court was delivered by
The basic issue in this case, as in
Eagan v. Boyarsky,
158
N.J.
632,
*611 I.
A. The Medical Malpractice Claim
On September 7, 1994, plaintiff, Linda Lowe, who was seeking treatment for cervical cancer, was referred to Dr. Zarghami by her personal physician. She saw Dr. Zarghami on two occasions in his office. On September 26, 1994, Dr. Zarghami performed a hysterectomy and a lymphadenectomy on Lowe at Kennedy Memorial Hospital-Stratford Division (“KMH”). At least two medical residents were present in the operating room. A week after her release from the hospital, Lowe experienced severe pain in her lower right back and had difficulty urinating. An x-ray revealed an obstruction to Lowe’s right distal ureter. The obstruction, a metallic clip apparently left on Lowe’s ureter after her hysterectomy, was removed by Dr. Jerome Pietras in December' 1994. Approximately two days after that surgery, Lowe claims that Dr. Zarghami called and informed her the urologist found a metallic clip in her body. He also allegedly indicated the clip would not cause any problems.
Lowe had further surgery in January of 1995, so that Dr. Pietras could remove a plastic stent he had used to keep Lowe’s ureter open. On February 2, 1995, Lowe was admitted to the KMH emergency room, and diagnosed with a urinary tract infection. In May 1995, doctors discovered hydronephrosis of Lowe’s right kidney. Lowe returned to KMH in August 1995, and was diagnosed with a stricture of the right distal ureter. She underwent another operation. After an unidentified medical resident told Lowe that her problems may have resulted from poor medical care, she contacted an attorney. The attorney investigated the medical records, and informed Lowe in December 1995 that she might have a valid malpractice claim. The merits of the underlying claim are not at issue.
B. Defendant’s Employment with UMDNJ
In 1983, Dr. Faramarz Zarghami became an Assistant Professor of Clinical Obstetrics and Gynecology of the University of Medi *612 cine and Dentistry of the State of New Jersey. Dr. Zarghami’s employment is not evidenced by a formal written contract, but rather by two letters verifying his appointment as an Associate Professor. The letter regarding his reappointment as Assistant Professor of Clinical Obstetrics and Gynecology sets forth the duration of the appointment, the job level, and the status of his salary.
UMDNJ is a public entity entitled to the protection of the Tort Claims Act. UMDNJ enters affiliation agreements with private hospitals so that UMDNJ faculty, like defendant, may treat patients and instruct medical students in affiliated hospitals. Such affiliation agreements are provided for by statute. See N.J.S.A. 18A:64G-2. The affiliations provide places for UMDNJ to operate its faculty practice plans. Those faculty practice service plans, designed to complement the policies and development of UMDNJ, are intended to attract patients for teaching purposes, supplement faculty salaries, establish UMDNJ as a patient referral source, and allow UMDNJ faculty to retain and refine their clinical skills.
KMH, a private hospital, entered into an affiliation agreement with UMDNJ that required Dr. Zarghami to work at KMH in accordance with a faculty practice plan. Under that Agreement UMDNJ provided Dr. Zarghami with an office and office staff,, in a building that the University either owned or leased, and arranged for him to have staff privileges at KMH. The University also billed for all patient treatment provided by Dr. Zarghami, and Dr. Zarghami’s sole compensation consisted of an annual salary paid to him by UMDNJ. The University issued a W-2 Tax Form for Dr. Zarghami. UMDNJ participated in KMH’s peer review committee, and the Chief of Obstetrics and Gynecology at KMH was also a UMDNJ employee.
Operating room activities, however, were governed by KMH procedures, and KMH provided the equipment, attending nursing staff, and anesthesiologist for the surgery. Under the affiliation agreement, UMDNJ billed plaintiff for all patient treatment provided by Dr. Zarghami, and KMH billed plaintiff for her hospital *613 ization. Plaintiffs insurer paid those bills. Plaintiff claims that she never saw the bill from UMDNJ for her surgery because her medical bills were handled by her insurance company.
At the time of plaintiffs surgery, three classes of obstetrics and gynecology physicians practiced at KMH: (1) university doctors; (2) care source doctors, who are employed by the hospital; and (3) outside physicians in private practice.
Prior to Lowe’s surgery, Dr. Zarghami met with Lowe in his office. The office building’s sign indicates that it is a part of UMDNJ. Dr. Zarghami typically wears a badge indicating his affiliation with UMDNJ; however, he could not recall wearing the badge during his meeting with Lowe. Dr. Zarghami testified that the University requires him to disclose his faculty status to all potential patients, but he did not remember discussing his employment status with Lowe. Plaintiff, who worked as a nurse at KMH, claims in a signed affidavit that she was at all times unaware of defendant’s employment relationship with UMDNJ.
C. Procedural History
Lowe filed a malpractice complaint against Dr. Zarghami and KMH on February 8,1996. Dr. Zarghami delivered a copy of the complaint to UMDNJ on March 4. On April 19, 1996, Dr. Zarghami filed a motion to dismiss based on his status as a UMDNJ employee and Lowe’s failure to provide notice within 90 days of the accrual of the claim as required by the Tort Claims Act. The court denied Dr. Zarghami’s motion.
On July 19, 1996, Lowe filed a motion for leave to file a late notice of claim pursuant to N.J.S.A. 59:8-9 of the TCA. That section permits a court to allow a plaintiff to file a late notice of a claim under “extraordinary circumstances,” if the motion is made within one year of the accrual of the claim. Alternatively, Lowe argued that Dr. Zarghami was not a state employee within the meaning of the Tort Claims Act. The court denied that motion, concluding that Lowe’s claim accrued in December 1994, when she became aware that a foreign object had been left in her body after *614 the surgery. As a result, the motion had not been made within one year of the accrual of the claim. The court observed that even if the claim had not accrued until August 1995, this case did not present the extraordinary circumstances required to justify a late notice of claim.
Lowe sought partial reconsideration of the court’s decision, asking the court to review again whether Dr. Zarghami was a state employee entitled to the protection of TCA. Dr. Zarghami moved for summary judgment. After a hearing, the court again denied the motion to file a late notice of a claim. On that same day, Dr. Zarghami’s motion for summary judgment was granted.
Lowe sought interlocutory review of the order granting summary judgment, again contending that Dr. Zarghami was not a state employee. The Appellate Division granted interlocutory review and concluded that because Dr. Zarghami did not act under the control of UMDNJ when he operated on Lowe at KMH, a non-state institution, he acted as an independent contractor.
Lowe v. Zarghami,
305
N.J.Super.
90, 97,
The Attorney General assumed responsibility for Dr. Zarghami’s defense and filed a motion for leave to appeal the interlocutory order of the Appellate Division to this Court. The sole issue presented by that appeal was whether Dr. Zarghami was a state employee entitled to the protection of the TCA. Plaintiff did not file a cross-appeal. We granted defendant’s motion for leave to appeal.
II.
A. The TCA
UMDNJ is a public entity entitled to immunity under the Tort Claims Act.
See Fuchilla v. Layman,
109
N.J.
319, 330-31,
*615
c. A public employee is not liable for an injury where a public entity is immune from liability for that injury.
The amendment also made the notice requirements under N.J.S.A. 59:8-3 applicable to both public entities and public employees. Under the TCA, a public employee is entitled to notice of a claim within 90 days of the accrual of a cause of action. N.J.S.A. 59:8-3, 8-8. A plaintiff must wait six months after the notice of claim is received before filing suit. N.J.S.A. 59:8-8. Those notice provisions, however, apply only if the worker is a public employee. The Tort Claims Act defines “employee” as follows:
‘Employee’ includes an officer, employee or servant, whether or not compensated or part-time, who is authorized to perform any act or service; provided, however, that the term does not include an independent contractor.
[N.J.S.A. 59:1-3]
Courts use two different tests to distinguish employees from independent contractors.
B. The Control Test
The control test is grounded in the common law master-servant relationship.
New Jersey Property-Liability Ins. Guar. Ass’n v. State,
195
N.J.Super.
4, 8,
The greater the degree of control exercised by the employer, the more likely a worker will be considered an employee. The control test is satisfied whenever the employer retains the right of control, even if the employer may not exercise actual control over the worker.
Sloan v. Luyando,
305
N.J.Super.
140, 148,
C. Relative Nature of the Work Test
The relative nature of the work test requires a court to examine “the extent of the economic dependence of the worker upon the business he serves and the relationship of the nature of his work to the operation of that business.”
Marcus v. Eastern Agricultural Ass’n,
58
N.J.Super.
584, 603,
various situations in which the control test does not emerge as the dispositive factor. For example, where it is not in the nature of the work for the manner of its performance to be within the hiring party’s direct control, the factor of control can obviously not be the critical one in the resolution of the case, but takes its place as only one of the various potential indicia of the relationship which must be balanced and weighed in determining what, under the totality of the circumstances, the character of that relationship really is.
[Marcus, supra, 58 N.J.Super. at 597,157 A.2d 3 (Conford, J.A.D., dissenting).]
*617
Although used primarily in workers’ compensation cases, the New Jersey courts have found that the relative nature of the work test may sometimes be useful in other contexts.
New Jersey Property, supra,
195
N.J.Super.
at 11,
Dunellen v. F. Montecalvo Contracting Co.,
273
N.J.Super.
23, 28-30,
*618
The relative nature of the work test supplements the control test in limited circumstances. If a working relationship was created by social legislation under which public policy concerns dictate a more liberal standard, then a court may apply the relative nature of the work test rather than the control test.
Wajner, supra,
298
N.J.Super.
at 120,
D. Applying the Tests
The cases suggest a tiered inquiry to determine whether a person is an “employee” under the Tort Claims Act.
New Jersey Property, supra,
195
N.J.Super.
at 10-11,
When examined according to the four factors of the control test, defendant’s status as an employee of UMDNJ is a close question. UMDNJ apparently exercised little control over the means by which defendant administered medical treatment to plaintiff and other patients. Defendant concedes that he did not inform UMDNJ of his plans to perform surgery on plaintiff, nor does it appear that he consulted with any other UMDNJ doctors. However, defendant’s sole compensation was his UMDNJ salary, and UMDNJ furnished defendant with offices, staff, and other UMDNJ facilities. UMDNJ also retained the right to terminate *619 defendant, although a KMH oversight board retained control over defendant’s staff privileges.
The Appellate Division found that KMH exercised greater control over defendant than did UMDNJ.
Lowe, supra,
305
N.J.Super.
at 95-96,
Indeed, UMDNJ employs practicing physicians as clinical instructors because UMDNJ expects those physicians to exercise independent, professional judgment while educating medical students and treating patients. The relative nature of the work test allows the Court to account for that “necessary exercise of independent judgment.” The relationship between defendant and UMDNJ presents a clear case in which “it is not in the nature of the work for the manner of its performance to be within the hiring party’s direct control.”
Marcus, supra,
58
N.J.Super.
at 597,
We reach that conclusion not only because of the work Dr. Zarghami performed but also because of the public policy concerns expressed in UMDNJ’s enabling legislation. The Legislature granted the Board of Trustees of UMDNJ broad authority over the conduct of the University. N.J.S.A. 18A:64G-6. The Board’s use of that authority is “deemed to be public and essential governmental functions necessary to the welfare of the State and the people of New Jersey.” N.J.S.A. 18A:64G-3. Included in the Board’s powers is the authority to enter into agreements with both public and private organizations. N.J.S.A. 18A:64G-6(l).
The Board used that authority to enter into affiliation agreements, under which full-time UMDNJ faculty participate in supplemental medical practices. The Board requires faculty to participate in those practice plans to broaden students’ clinical experiences, to provide a supplemental source of funding for faculty salaries, to establish an in-State location for specialized care for New Jersey citizens, and to refine and retain clinical skills.
The public policy considerations expressed in the UMDNJ enabling legislation support a more liberal evaluation of the working relationships created, by the University. Particularly important to that conclusion is the Legislature’s desire to grant the
*621
Board the “structural flexibility” necessary to maintain “productive and varied relationships with other health-care organizations.”
N.J.S.A.
18A:64G-2. In
Wajner,
the Appellate Division concluded that house-staff medical residents at affiliated hospitals were UMDNJ employees.
Wajner, supra,
298
N.J.Super.
at 121,
To accomplish those goals, the Legislature granted UMDNJ extensive autonomy, and the authority to place residents and faculty members in affiliated hospitals. Although residents are subject to strict control, the nature of the medical profession prevents UMDNJ from exerting substantial influence over faculty practice. The application of the limiting standards of the control test to the flexible working relationships designed by UMDNJ would significantly impair the faculty practice in affiliated private hospitals.
The liability limiting goals of the Tort Claims Act do not render the relative nature of the work test inapplicable. The Tort Claims Act was intended to limit the liability of public entities.
Brooks, supra,
150
N.J.
at 402,
The relative nature of the work test also considers the “extent of the economic dependence of the worker upon the business he serves.”
Marcus, supra,
58
N.J.Super.
at 603,
In addition to economic dependence, the relative nature of the work test requires the Court to evaluate “the relationship of the nature of [the] work to the operation of that business.”
Marcus, supra, 58 N.J.Super.
at 603,
*623 If UMDNJ faculty practicing at affiliated hospitals are not public employees, then a number of the goals of the faculty practice program are defeated. First, the status of UMDNJ faculty members would be contingent on where they performed procedures. UMDNJ faculty treating patients in public hospitals would be public employees, and UMDNJ faculty treating patients in affiliated private hospitals would be independent contractors. Such a distinction would create confusion, and limit the accessibility of UMDNJ faculty for patient referrals. Second, if UMDNJ faculty operating in affiliated private hospitals are considered independent contractors, they may be personally liable for their malpractice. If personal liability becomes the rule, physicians may either decide to practice only in public hospitals, or eschew UMDNJ faculty status. Either result would limit the quality of UMDNJ doctors and reduce clinical opportunities for medical students. Third, if UMDNJ elects to indemnify faculty members practicing in private affiliated hospitals, then costs will increase. Rather than providing a new source of funding for faculty salaries, the faculty practice plan could drain resources from UMDNJ. Those factors weigh heavily in favor of concluding that Dr. Zarghami’s operation on Lowe was part of a UMDNJ program under which the doctor must be considered a public employee.
Because Dr. Zarghami was totally economically dependent on UMDNJ and his work constituted an integral part of UMDNJ’s business, both aspects of the relative nature of the work test are satisfied. Therefore, we conclude that UMDNJ faculty, like Dr. Zarghami, practicing in affiliated private hospitals are public employees.
That conclusion is supported by Attorney General Formal Opinion No. 23-1976. In 1976, the Attorney General issued Formal Opinion No. 23. The opinion found that the Board of Trustees of the College of Medicine and Dentistry [soon to be reorganized as part of the University of Medicine and Dentistry] was “clearly authorized” to establish faculty practice programs “calculated to enhance the clinical skills of the faculty, to provide a means to *624 supplement the patient population thereby increasing clinical education opportunities, and to supplement faculty income.” The opinion stated that “professional activities undertaken by participating faculty physicians are considered within the scope of employment for purposes of ordinary liability and malpractice coverage.”
The opinion described the features of the faculty practice plan and determined that the plans “are subject to all appropriate College regulations and are subject to all applicable State statutes and regulations in the same manner and degree as the College.” The opinion also determined that “administrative, professional and clerical personnel working directly for the faculty practice plans are employees of the College rather than the individual plan.” Moreover, “each person working for the faculty practice plan is entitled to all benefits normally accorded College employees including vacation and sick time, allowances, leave of absence, policies and pension benefits.” UMDNJ and its employees have acted in reliance upon Formal Opinion 23-1976 for the past twenty-two years.
III.
Because the Appellate Division held that Dr. Zarghami was an independent contractor, it did not reach the issue of whether “extraordinary circumstances” existed that justified Lowe’s failure to file a timely notice of claim. However, that issue was decided by the trial court and was briefed and argued in this appeal. Accordingly, we now consider whether Lowe should be permitted to file a late notice of claim.
N.J.S.A. 59:8-9 provides that a claimant who fails to file notice of his claim within 90 days after the accrual of the cause of action, may in the discretion of the court, be permitted to file such notice at any time within one year after the accrual of his claim, provided that the public entity or public employee has not been substantially prejudiced.
*625
In this case, Lowe, unlike Eagan, the plaintiff in
Eagan, supra,
158
N.J.
at 640,
To justify the late filing, the claimant must present “extraordinary circumstances” for his failure to file the notice of claim within the ninety-day period following the accrual of a cause of action. Lowe argues that by practicing at affiliated private hospitals, UMDNJ faculty obscured their public employment. As public employees, those physicians are entitled to notice under the Tort Claims Act, but their patients are unaware that notice is required. As a result, the patient referral service created by UMDNJ may at times be unfair to those patients who are the victims of medical malpractice. Although that factor alone does not outweigh the economic dependence and policy goals that undergird our conclusion that Dr. Zarghami is a public employee, it should be considered in determining whether plaintiff has presented “extraordinary circumstances” that justify her failure to file a timely notice of claim.
Until 1994, the Tort Claims Act applied a fairly permissive standard when claimants sought to file notices of late claims. Claimants had to demonstrate only “sufficient reasons” for the delay, and that the State would not be prejudiced as a result. N.J.S.A. 59:8-9 (Comment). The Legislature enacted a more demanding standard when the TCA was amended in 1994 to require that the “sufficient reasons” for late filing must constitute *626 “extraordinary circumstances.” N.J.S.A. 59:8-9, as amended by L. 1994, c.49 § 5.
Although that change in language “suggested that the amendment may have signaled the end to a rule of liberality,”
Zois v. New Jersey Sports and Expo. Auth.,
286
N.J.Super.
670, 675,
New cases have applied the 1994 extraordinary circumstances amendment of
N.J.S.A.
59:8-9 to determine whether the filing of a late claim is permitted. In
Ohlweiler,
the plaintiff, a public school teacher in Chatham, fell into an uncovered manhole while taking a group of students on a tour of the local sewage disposal plant.
Ohlweiler, Supra,
290
N.J.Super.
at 400,
In
O’Neill, supra,
304
N.J.Super.
at 547-48,
In
Allen v. Krause,
306
N.J.Super.
448,
Nonetheless, as one commentator has observed, “[t]he court left open the possibility that the extraordinary circumstances test could be met where there was a delay in giving notice because although the plaintiff was aware of the identity of a public *628 employee that person’s status as public employee was not apparent to or immediately discoverable by the plaintiff.” Margolis and Novack, supra, Comment to N.J.S.A. 59:8-9 at 163.
Before the 1994 amendment, courts recognized that sufficient reasons could exist for the filing of late notice of claim where the public entity, intentionally or unintentionally, obscured the identity of the appropriate responsible public entity to be sued. In
Feinberg v. State, D.E.P.
137
N.J.
126,
In
Zwirn v. County of Hudson,
137
N.J. Super.
99,
In
Dambro v. Union Cty. Park Comm.,
130
N.J.Super.
450,
Although the exact identity of the tortfeasor, Dr. Zarghami, was known, his status as a public employee was obscured by his apparent status as a private physician. Plaintiffs failure to file a notice of claim arose not from any lack of diligence; to the contrary, plaintiff filed her claim within the two-year limitation period applicable to malpractice claims against a private physician. What is unusual in this case and in
Eagan v. Boyarsky, supra,
158
N.J.
at 638,
The notice provisions of the Tort Claims Act were not intended as “a trap for the unwary.”
Murray v. Brown,
259
N.J.Super.
360, 365,
The circumstances in this case qualify as “extraordinary.” Lowe complied with all of the requirements of a typical malpractice claim. Unlike the plaintiff in O’Neill, Lowe contacted an attorney as soon as she became aware of the possibility of malpractice. There is no evidence supporting the conclusion that *630 Lowe knew Dr. Zarghami was a UMDNJ employee. Although Lowe was aware of the identity of the potential defendant, Lowe had no reason to suspect that her doctor was even associated with a public entity. The doctor’s evidence to the contrary is unconvincing. ' He does not recall wearing his UMDNJ badge to his meeting with Lowe; he does not recall discussing his employment status. Although Lowe works as a nurse at KMH, there is no indication that she knew Dr. Zarghami, or was aware that UMDNJ doctors practiced in KMH, a private hospital.
Even assuming that Lowe knew Dr. Zarghami was a UMDNJ professor, she easily could have believed he was not acting as a public employee when practicing at KMH. As the record below indicates, there were three classes of doctors practicing in the hospital.
Ante
at 613,
In view of all those facts, Lowe’s case is like
Feinberg, supra,
137
N.J.
at 126,
The Ohlweiler court considered the normally transitory nature of that plaintiff’s injury to be a significant factor in finding extraordinary circumstances. Similarly, just as the normally transitory sprain unexpectedly proved more serious in Ohlweiler, the *631 normal procedure for medical malpractice claims unexpectedly proved inadequate in this matter.
A late notice of claim would not prejudice either Dr. Zarghami or UMDNJ. Dr. Zarghami forwarded the complaint to UMDNJ as soon as it was filed. Because Dr. Zarghami is required to keep medical records in the ordinary course of treating patients, investigation of Lowe’s claim is not hindered by the delay in filing notice. Furthermore, Dr. Zarghami must have been aware of the possibility of a malpractice suit, given Lowe’s repeated treatments, and the discovery of a foreign object in her body. Lowe should be permitted to file a late notice of a claim.
To resolve patients’ doubts surrounding the employment status of their physicians, UMDNJ must require clinical professors employed by them to advise their patients, both orally and in writing, that they are employees of UMDNJ. Such notice should be given to a patient as soon as practicable. It also would be helpful if clinical professors’ wore badges identifying themselves as UMDNJ employees. Those steps, if taken, together with this holding that clinical professors are UMDNJ employees, should make patients more aware that their physicians are public employees entitled to notice under the TCA.
V.
The nature of the UMDNJ enabling legislation and the broad entitlement to notice enjoyed by public employees under the Tort Claims Act warrant applying the relative nature of the work test and determining that UMDNJ faculty practicing in affiliated private hospitals are public employees. As public employees, these doctors are typically protected by the notice provisions of the Tort Claims Act. Because of the specific facts of this ease, however, we hold that this plaintiff presented extraordinary circumstances, under which late notice of a claim is permitted.
The judgment of the Appellate Division is reversed, and the case is remanded for further proceedings consistent with this opinion.
*632 For reversal and remandment — Chief Justice PORITZ and Justices POLLOCK, O’HERN, GARIBALDI STEIN and COLEMAN — 6.
Opposed — None.
