This аppeal is before us on writ of certiorari to the court of appeals. Petitioner Don Herman seeks to appeal the judgment of the court of appeals, which reversed an award of death benefits made by a hearing examiner of the Workers’ Compensation Division. We have granted the petition, and we reverse the judgment of the court of appeals, reinstating the award of benefits.
Respondent Miners’ Hospital (Hospital) employed Herman’s spouse, the decedent, as a nurse. On July 21, 1986, decedent died as a result of a heart attack suffered at work. She had been treated at the Hospital for the heart attack immediately prior to her death, and she died at the Hospital. Decedent’s heart attack occurred during a period when she suffered from substantial stress related to her employment. Following her death, the Hospital, as employer, did not file a first report of accident, and petitioner filed a claim for death benefits on July 20, 1988, almost two years after the death.
The Workers’ Compensation hearing examiner determined that decedent died in an accident arising out of and in the course of her employment and that her death was causally connected to employment-related stress. The examiner also concluded that the Hospital had actual notice of the accident and that the Hospital’s failure to file a first report of accident tolled the statute of limitations. See NMSA 1978, §§ 52-1-58 & -59. Accordingly, Herman was awarded benefits as surviving spouse.
The court of appeals reversed in a memorandum opinion, holding that the claim was barred by the notice requirements of the Workers’ Compensation Act, NMSA 1978, Section 52-1-29, and that the claim was
I. IS THE HEARING EXAMINER’S FINDING THAT DECEDENT’S HEART ATTACK WAS CAUSALLY RELATED TO ON-THE-JOB STRESS SUPPORTED BY SUBSTANTIAL EVIDENCE?
The essence of the Hospital’s claim is that Herman failed to carry his burden to show that the heart attaсk resulted from decedent’s employment, and thus there was not substantial evidence supporting the hearing examiner’s finding of causation. It argues that under whole record review the finding must be reversed because the totality of the evidence indicates that the finding was not reasonable.
On appeal, to determine whether a challenged finding is supported by substantial evidence, we have always given deference to the fact finder, even when we apply, as here, whole record review. See Duke City Lumber Co. v. New Mexico Envtl. Improvement Bd.,
Section 52-l-28(B) requires that where an employer denies a disability is a result of an accident, the claimant “must establish that causal connection as a probability by expert testimony of a health care provider.” In other words, Herman had to show by medical evidence that decedent's death and heart attack was a medically probable result of the work-related stress. See Anderson v. Mackey,
The Hospital аsserts that a possible cause only becomes a probable cause “ ‘when in the absence of other reasonable causal explanations it becomes more likely than not that the injury was a result of its action.’ ” Bufalino v. Safeway Stores, Inc.,
Three medical experts presented evidence, two on behalf of Herman and one for the Hospital. All testified that several factors could cause a heart attack and that several of the factors were present in decedent. Stress was identified as a minor risk factor. All of the experts agreed that smoking, high cholesterol, high blood pressure, diabetеs, and a family history of heart disease were major factors. The Hospital’s expert indicated that job-related stress was one of many minor factors, while Herman’s experts testified it was one of four minor factors. The Hospital’s expert testified that as the number of risk factors present in a patient increased, the risk of heart attack multiplied. One of Herman’s experts testified that stress appeared to have exаcerbated decedent’s high blood pressure, which caused heart damage. This evidence was contradicted by other testimony.
We conclude that, even under whole record review, the testimony supports the hearing examiner’s findings. Whole record review is not an excuse for an appellate court to reweigh the evidence and replace the fact finder’s conclusions with its own. It allows the reviewing court greater latitude to determine whether a finding of fact was reasonable based on the evidence, and we hold that, in this case, even though the examiner was faced with conflicting evidence, its finding was reasonable. In Oliver v. City of Albuquerque,
In the present case, the Hospital’s expert stated there was no causal connection, and one of claimant’s experts is contended to have been discredited. However, claimant’s other expert, a cardiologist, presented evidence to the effect that stress, although a minor risk factor when compared to several major risks that afflicted dеcedent, is a factor causing heart attacks. Evidence also was presented that the more factors present in a patient, the greater the likelihood of heart disease. Thus, the evidence is sufficient for us to sustain the fact finder under the Oliver standard and applying whole record review. Herman was not required to prove that stress was the only factor causing the fatal heart attack; he needed to show that thе heart attack more likely than not was the result of stress. Bufalino,
We find the evidence presented here susceptible to a conclusion similar to that articulated in Oliver. To conclude otherwise, under these facts, would sanction a rationale that a finder of fact could never reach a determination of “medical probability” when opposing parties presented experts with diametrically opposed opinions. Conflicting evidence does not, by itself, demand a conclusion that only a “medical possibility” has been shown. The evidence presented here, simply stated, is that stress is a factor, albeit minor, in causing heart disease; the risk of heart disease multiplies
II. DID THE HOSPITAL HAVE ACTUAL NOTICE?
Section 52-l-29(B) excuses the written notice requirements of subsection (A), and states:
No written notice is required to be given where the employer or any superintendent or foreman or other agent in charge of the work in connection with which the accident occurred had actual knowledge of its occurrence.
The Hospital argues that we are presented with a narrow legal issue: whether knowledge of an on-the-job heart attack constitutes actual knowledge of an accident sufficient to satisfy Section 52-l-29(B). This appears to be the position of the court of appeals, which, despite the hearing examiner’s finding of actual notice based on the Hospital employees’ knowledge of the time, place, and circumstances of the accidental death, determined that “there is no evidence in the record that [the Hospital] knew that the heart attack was caused by the decedent’s employment.”
In a workers’ comрensation case where a dependent seeks benefits based on the worker’s death by heart attack, the death is analyzed as the disability, the heart attack as the injury, and the employment-related stress as the accident. Oliver,
We conclude that ample evidence supports the finding of knowledge under the unique facts and setting of this case. The Hospital knew of the decedent’s heart attack — not only did she suffer the heart attack at work, but she was treated and died there. The Hospital also knew of her stressful schedule. Decedent worked a forty-hour week; she was on call an additional eighty hours a week, she attended school, and she was involved in merger plans, all with the Hospital’s knowledge. Moreover, testimony indicated thаt decedent had an argument with one of the hospital’s surgeons on the day of her death. 3
The court of appeals rejected petitioner’s argument that Section 52-1-29(B) was satisfied because the Hospital’s
The finding that the Hospital had actual knowledge of the circumstances of decedent’s accidental death, which we have found supported by the evidence, constitutes a finding of causation. Such a conclusion need not rest on the admittedly flimsy logic that knowledge of the stress, heart attack, and death necessarily leads to the conclusion that an employer knew of causation. The hearing examiner was entitied to draw inferences from the facts presented. See Powers v. Riccobene Masonry Constr., Inc.,
Moreover, the reasons and policies underlying the notice requirement support our conclusion. The requirement is designed to protect the employer, allowing it to investigate the facts and circumstances surrounding an injury while the facts are accessible. It allows the employer to act to prevent the filing of fictitious claims and to make sure an injured employee receives proper medical аttention. See Herndon,
The court of appeals apparently felt compelled to reverse the hearing examiner by our opinion in Wilson v. Navajo Freight Lines, Inc.,
III. WAS THE STATUTE OF LIMITATIONS TOLLED?
NMSA 1978, Section 52-1-58 requires an employer to file a written report of a compensable accidental injury suffered by an employee with the labor commissioner within ten days of the injury. Section 52-1-59 provides that the effect of a failure to file is that no claim for compensation is barred prior to the filing of the appropriate report. Section 52-l-31(B) contains the otherwise applicable statute of limitations and the procedure for filing a claim upon the death of a worker for which compensation may be received. Eligible dependents are entitled to recover benefits, although no claim can be filed unless notice has been given as required by Section 52-1-29 and a claim is filed within a year of the worker’s death.
In the present case, the claim was filed almost two years after decedent’s demisе. The hearing examiner, however, found the statute of limitations was tolled and the claim was not barred because of the Hospital’s failure to file a first report of accident as required by Section 52-1-58. The court of appeals held otherwise, determining that, because it reversed the examiner’s finding of actual notice, Wilson required the conclusion that the statute of limitations was not tolled. See
Accordingly, we reverse the decision оf the court of appeals and reinstate the judgment of the workers’ compensation hearing officer.
IT IS SO ORDERED.
Notes
. The relevant statute, and that considered by the hearing examiner and the court of appeals, is the one in effect at the time the cause of action accrued, i.e. when the employee knew or should have known of the existence of a compensable injury. Noffsker v. Barnett & Sons,
. The Hospital also refers us to Renfro v. San Juan Hospital, Inc.,
. The Hospital argues that the purported knowledge of the testifying physician (who apparently was an independent physician at the Hospital and was not on the staff) regarding job-related stress does not establish the Hospital’s knowledge of the accident. In this regard the Hospital misapprehends the role of an appellate court in reviewing the evidence and the function of circumstantial evidence in establishing facts, including actual knowledge. See Professional Insurors, Inc. v. Buck Scott & Son Motor Co.,
. Moreover, a common-sense consideration of this problem demonstrates the logic of our conclusion and the reasonableness of the hearing examiner’s inferences. Whereas a trucking company may not be in a pоsition to know reasonably that a heart attack suffered by a driver somewhere in Missouri is related causally to the employment and, therefore, the result of a work-related accident, a hospital could know reasonably that a heart attack suffered by a nurse while under stress both from an incident that same day and from the daily demands of her occupation is connected causally to her employment, at least to the extent that it has notice of a potential claim.
