OP ALA, Justice.
The dispositive issues presented on certio-rari are: [1] Does the 85 O.S.1991 § 17(D)
requirement — that a trial tribunal’s deviation of more than 10% from the
impairment rating
by an independent court-appointed physician be specifically identified — apply to evaluation
of permanent total disability?
and if not [2] Is the trial tribunal’s award of permanent total disability supported by competent evidence? We answer the first question in the negative and the second in the affirmative.
I
THE ANATOMY OF LITIGATION
The claimant, Charles Bucek [claimant or Bucek], was employed as a maintenance engineer for Farm Fresh Bakery [employer]. While repairing a bun oven on October 1,
1989, he slipped on an oil-slick floor, sustaining injuries to his neck, back and left shoulder. The trial tribunal ordered the claimant’s examination by an independent medical expert [Dr. H. or IME],
At the August 24, 1993 hearing several medical reports and records were admitted. The claimant’s rating physician, Dr. E., concluded that Bucek had sustained 85%
permanent partial impairment
to the whole person and as a result was
permanently totally disabled.
The employer’s rating physician, Dr. C., stated that the claimant had sustained 16% permanent partial impairment to the body. Dr. H., the court-appointed physician, who had been the claimant’s treating physician, opined that Bucek had sustained 11% permanent partial impairment to the whole person. According to Dr. H., the claimant could return to work.
The trial tribunal entered an award for permanent total disability,
which
gave no explanation for its 89% in impairment deviation from the rating in the IME report.
On appeal to a three-judge review panel, the employer argued that, in light of the IME’s 11% permanent partial impairment assessment, the trial tribunal’s determination of the claimant’s permanent total disability had no support in the record or in compensation law. By its December 21,1998 decision the review panel adopted the trial tribunal’s award of permanent total disability. This proceeding for corrective relief, brought by the employer, followed.
The Court of Appeals sustained the panel’s decision, holding that (a) the question whether claimant is permanently totally disabled is one of fact to be reviewed by the familiar standard of competent medical proof, and (b) the § 17(D)
requirement — that a trial tribunal’s deviation of more than 10% from the IME impairment rating be specifically identified — applies
only
to evaluations of
permanent impairment
and not to a
permanent total disability
rating.
Although we reach the same result as the Court of Appeals, we vacate that court’s opinion to provide a more extensive guidance for the distinction between
impairment
and
disability
in the post-1977 benefits regime.
II
THE “IMPAIRMENT” AND “DISABILITY” DISTINCTION IN THE 1977 WORKERS’ COMPENSATION ACT
The employer urges that the trial judge
impermissibly
deviated more than 10% from IME’s
impairment rating
because he failed to provide the explanation required by § 17(D) of the compensation law.
This issue calls for an analysis of the conceptual distinction between
disability
and
impairment
embodied in the 1977 Workers’ Compensation Act [1977 Act].
When examining the impact of this legislation, it is helpful
first
to explore Oklahoma’s pre-1977 benefits regime.
The Pre-1977 Disability-Based Compensation Scheme
When first enacted in 1915, Oklahoma’s regime for delivery of benefits to an injured worker was designed to restore lost earnings for compensable harm from “hazardous employment”.
This institutional design established four categories of disability-based ben
efits (permanent total, temporary total, permanent partial and temporary partial).
The key term
“disability”
was not defined by statute. The court eventually came to measure it by a worker’s capacity to perform “ordinary manual or mechanical labor”.
An injury to a specific, scheduled member of the body (a
classified
disability) was measured by the number of weeks in the member schedule,
while one to an
“unclassified
part of the body” fell under the “other cases” clause of § 22
and was compensated on the basis of percentage
disability
to the body as a whole.
The 1977 Act’s Disability-Based and Impairment-Related Benefits Regime
The 1977 Act made two significant changes in the compensation law. It extended coverage to nearly all Oklahoma employees (not just to those in “hazardous employment”) and introduced a mixed
impairment
-related and
disability
-based benefits regime. The terms
disability
and
impairment
were given distinct meanings.
Disability
is designed to measure an employee’s capacity for work, i.e., the degree to which an injury affects a person’s ability to perform any task for which the worker is reasonably suited by training, education and experience.
The purpose of disability-related compensation in the 1977 Act is to
replace the incapacitated worker’s lost
earnings
for injury to the limbs based on the number of weeks assigned as a maximum for each limb. The Act
left intact
this (pre-1977) wage-replacement
concept of disability
but confined its application
solely
to (1)
temporary
(temporary total and temporary partial) and (2)
permanent total
benefits.
Permanent total disability is defined as “[ijncapacity because of accidental injury or occupational disease to earn any wages in any employment for which the employee is or becomes physically suited and reasonably fitted by education, training or experience.”
In
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OP ALA, Justice.
The dispositive issues presented on certio-rari are: [1] Does the 85 O.S.1991 § 17(D)
requirement — that a trial tribunal’s deviation of more than 10% from the
impairment rating
by an independent court-appointed physician be specifically identified — apply to evaluation
of permanent total disability?
and if not [2] Is the trial tribunal’s award of permanent total disability supported by competent evidence? We answer the first question in the negative and the second in the affirmative.
I
THE ANATOMY OF LITIGATION
The claimant, Charles Bucek [claimant or Bucek], was employed as a maintenance engineer for Farm Fresh Bakery [employer]. While repairing a bun oven on October 1,
1989, he slipped on an oil-slick floor, sustaining injuries to his neck, back and left shoulder. The trial tribunal ordered the claimant’s examination by an independent medical expert [Dr. H. or IME],
At the August 24, 1993 hearing several medical reports and records were admitted. The claimant’s rating physician, Dr. E., concluded that Bucek had sustained 85%
permanent partial impairment
to the whole person and as a result was
permanently totally disabled.
The employer’s rating physician, Dr. C., stated that the claimant had sustained 16% permanent partial impairment to the body. Dr. H., the court-appointed physician, who had been the claimant’s treating physician, opined that Bucek had sustained 11% permanent partial impairment to the whole person. According to Dr. H., the claimant could return to work.
The trial tribunal entered an award for permanent total disability,
which
gave no explanation for its 89% in impairment deviation from the rating in the IME report.
On appeal to a three-judge review panel, the employer argued that, in light of the IME’s 11% permanent partial impairment assessment, the trial tribunal’s determination of the claimant’s permanent total disability had no support in the record or in compensation law. By its December 21,1998 decision the review panel adopted the trial tribunal’s award of permanent total disability. This proceeding for corrective relief, brought by the employer, followed.
The Court of Appeals sustained the panel’s decision, holding that (a) the question whether claimant is permanently totally disabled is one of fact to be reviewed by the familiar standard of competent medical proof, and (b) the § 17(D)
requirement — that a trial tribunal’s deviation of more than 10% from the IME impairment rating be specifically identified — applies
only
to evaluations of
permanent impairment
and not to a
permanent total disability
rating.
Although we reach the same result as the Court of Appeals, we vacate that court’s opinion to provide a more extensive guidance for the distinction between
impairment
and
disability
in the post-1977 benefits regime.
II
THE “IMPAIRMENT” AND “DISABILITY” DISTINCTION IN THE 1977 WORKERS’ COMPENSATION ACT
The employer urges that the trial judge
impermissibly
deviated more than 10% from IME’s
impairment rating
because he failed to provide the explanation required by § 17(D) of the compensation law.
This issue calls for an analysis of the conceptual distinction between
disability
and
impairment
embodied in the 1977 Workers’ Compensation Act [1977 Act].
When examining the impact of this legislation, it is helpful
first
to explore Oklahoma’s pre-1977 benefits regime.
The Pre-1977 Disability-Based Compensation Scheme
When first enacted in 1915, Oklahoma’s regime for delivery of benefits to an injured worker was designed to restore lost earnings for compensable harm from “hazardous employment”.
This institutional design established four categories of disability-based ben
efits (permanent total, temporary total, permanent partial and temporary partial).
The key term
“disability”
was not defined by statute. The court eventually came to measure it by a worker’s capacity to perform “ordinary manual or mechanical labor”.
An injury to a specific, scheduled member of the body (a
classified
disability) was measured by the number of weeks in the member schedule,
while one to an
“unclassified
part of the body” fell under the “other cases” clause of § 22
and was compensated on the basis of percentage
disability
to the body as a whole.
The 1977 Act’s Disability-Based and Impairment-Related Benefits Regime
The 1977 Act made two significant changes in the compensation law. It extended coverage to nearly all Oklahoma employees (not just to those in “hazardous employment”) and introduced a mixed
impairment
-related and
disability
-based benefits regime. The terms
disability
and
impairment
were given distinct meanings.
Disability
is designed to measure an employee’s capacity for work, i.e., the degree to which an injury affects a person’s ability to perform any task for which the worker is reasonably suited by training, education and experience.
The purpose of disability-related compensation in the 1977 Act is to
replace the incapacitated worker’s lost
earnings
for injury to the limbs based on the number of weeks assigned as a maximum for each limb. The Act
left intact
this (pre-1977) wage-replacement
concept of disability
but confined its application
solely
to (1)
temporary
(temporary total and temporary partial) and (2)
permanent total
benefits.
Permanent total disability is defined as “[ijncapacity because of accidental injury or occupational disease to earn any wages in any employment for which the employee is or becomes physically suited and reasonably fitted by education, training or experience.”
In
short, a permanently and totally disabled worker within the meaning of the Act is one eligible for wage replacement because of lack of capacity to earn
any
wages.
Impairment,
on the other hand, is a
medical condition; it
refers to the effect of. the injury upon a person’s ability to perform basic life functions.
The term
permanent impairment
is defined as “any anatomical or functional abnormality or loss after reasonable medical treatment has been achieved, which abnormality or loss the physician considers to be capable of being evaluated at the time the rating is made.”
Permanent partial disability
means “permanent disability” and is the “same as permanent impairment.”
This definition not only signifies a complete departure from the old theory of ordinary manual or mechanical labor, but also introduces a new and more specific concept for evaluating permanent partial disability by placing it on a footing absolutely equal with permanent impairment, i.e. loss of bodily function.
The American Medical Association Guides to the Evaluation of Permanent Impairment [AMA Guides]
provides helpful insight into the
impairment-disability
dichotomy. An
impairment
is viewed as a “medical matter”, whereas
disability
is deemed to “arise out of the interaction between impairment and external demands.”
As used in the AMA Guides, (a)
impairment
means “an alteration of an individual’s health status that is
assessed by medical means,”
and (b)
disability,
“which is
assessed by nonmedical means,
means an alteration of an individual’s capacity to meet personal, social, or occupational demands, or to meet statutory or regulatory requirements.”
With the sole exception of scheduled member losses, total or partial, the AMA Guides must be used for rating permanent
impairment.
In short, permanent partial disability, as distinguished from other payout classes, contemplates recompense for lost physical fitness, though the amount paid the worker must be measured by a percent
age of wages he (or she) would have earned
but for
the covered injury.
The terms of § 17(D)
require that a trial tribunal specifically identify the reason for its award’s deviation of more than 10% from the
impairment rating
by an independent court-appointed physician. Section 17(D), construed together with §§ 3(11)
and (18)
— the latter two of which define the terms
permanent impairment
and
permanent partial disability
— indicates that it is intended to deal with medical
permanent partial impairment
ratings.
The issue of
permanent total disability
turns on the evaluation of the worker’s present capacity “to earn any wages in any employment for which he is presently suited or fitted by education, training or experience.”
The determination of a claimant’s disability-based benefits presents a fact question for the trial tribunal.
Its finding in this case declared Bucek to be totally and permanently disabled. Because § 17(D) has no application to disability-related benefits, the trial tribunal neither grounded its award in the AMA Guides nor was it statutorily required to explain why that award deviated (by 89%) from the IME’s impairment rating.
Ill
THE TRIAL TRIBUNAL’S PERMANENT TOTAL DISABILITY AWARD IS SUPPORTED BY COMPETENT EVIDENCE
While the
panel’s review
of the trial tribunal’s findings is governed by
a clear-weight-of-the-evidence test,
this court, when examining that tribunal’s factual resolutions, applies the
any-competent-evidence standard.
If supported by competent evidence, the panel’s
findings
may not be disturbed on review.
A.
The employer’s expert
evidence,
consisting mostly of medical reports and records, was admitted without objection. Its proof included reports from (a) Dr. C., the employer’s rating physician, and (b) Dr. H., the court-appointed physician, who also treated the claimant. Dr. H., who gave him an
11% permanent partial impairment
rating (to the whole person,) stated that the claimant could return to work but recommended that he receive some vocational counselling. According to Dr. C.’s report, the claimant had sustained
16% permanent partial impairment.
The claimant’s proof consists of two letter-reports by his medical expert, Dr. E., and of some other medical records. In his reports
(one eight-page and another one-page analy-ses), Dr. E. opines that the claimant is permanently totally disabled. The longer report gave the claimant an
85% permanent partial impairment
rating and attributed it to the combined injury of his neck, back, spinal cord, and left shoulder. According to Dr. E.’s shorter report, he did not think the claimant “is going to be able to be retrained.” In the next sentence this physician opines that because the claimant is “well motivated,” he “may possibly be re-trained.” This report was admitted over the employer’s challenge to its probative value based on a seeming inconsistency in the quoted language.
Our review of the record reveals that the award of permanent total disability rests on competent evidence. The claimant’s medical proof fully explains the reasons for Dr. E.’s opinion. His comprehensive (eight-page) report contains (a) a relevant history of the claimant’s injuries, complaints and medical treatment, (b) a description of the examination, tests, and medical records reviewed, as well as (c) an evaluation of the extent of his impairment. This report clearly informs that were the claimant returned to work, he could not perform if he were required to stand for more than an hour or to sit for more than 20 minutes. According to Dr. E.’s explanation, the claimant cannot do
repetitive work
with his left arm or
any work
with his left arm above his waist. This is so because the claimant cannot do any work if he has to sit with his neck in one position, such as he would occupy when reading or looking at a monitor. The claimant, who has but a high school education, must have the ability to move and lay down. He had previously worked as a maintenance man. As a result of his injuries (severe pain in his neck and left shoulder, coupled with pain and weakness in his left arm and leg), Dr. E.
finally concludes
in his “bottom line” that it is doubtful Bucek could return to any type of gainful employment for which he is or could become reasonably suited by education, training or experience.
B.
The employer also argues that the claimant has the ability “to earn any wages in any employment” within the meaning of § 3(12).
In support of its position the employer directs us to the claimant’s testimony that (a) he has been employed twice since his accidental injury for a period of about six weeks; (b) he is an Army veteran with a GED (general
high school
equivalent diploma) and some microscopic college credits; (c) he is able to drive and was employed as a driver after his injuries; and (d) he has custody of, and cares for, his 4- and 5-year old grandchildren.
Although ordinarily the employer has the burden of establishing facts that challenge the claimant’s entitlement to benefits under the workers’ compensation law, when, as here, the record shows the worker has been continuously employed since the initial injury, the onus shifts to the worker to produce expert evidence that will overcome the contrary proof from the employer.
The claimant met the law’s requirement.
According to the record, the claimant attempted to work after his injury, but was unable to keep a job because of intense pain that prevented him from meeting his employer’s standards. His testimony is supported by competent medical evidence based on Dr. E.’s clinical findings. Bucek has been a manual laborer for some 30 years, worMng in the oil field as a roughneck and driller. According to him, he has relied upon manual labor for his livelihood because he has neither formal education nor training. He acquired his GED while in the Army, where he also received his only two college credits (the latter some 27 years ago). The claimant explained that while his grandchildren live with him, he is not their primary care giver while they remain in his home. He does not drive them to and fi’om school. The grandchildren are away from the home during the day from
9:00 a.m. until his wife picks them up at 5:00 p.m.
We hold that, on this record, there is competent medical evidence to support the trial tribunal’s award for permanent total disability.
CONCLUSION
Oklahoma’s current benefits regime gives a
distinct
legal meaning to the terms
impairment
and
disability.
A
disability-related award,
which is designed to replace a worker’s lost wages while he (or she) is unable to work, is assessed mainly upon nonmedical means — i.e., the claimant’s training, education and experience. An
impairment-based award
must rest solely on the claimant’s health condition and is measured entirely by medical standards for measuring the loss of bodily function. The
statutory requirement in § 17(D)
— that any deviation between an award’s and a court-appointed physician’s impairment rating be specifically
explained
— addresses
itself solely to impairment-based awards.
Claimant’s medical evidence competently supports the award of permanent total disability by overcoming the proof that he may have retained a sufficient residual capacity for work in gainful employment.
ON CERTIORARI PREVIOUSLY GRANTED, THE COURT OF APPEALS’ OPINION IS VACATED AND THE REVIEW PANEL’S ORDER IS SUSTAINED.
ALMA WILSON, C.J., KAUGER, V.C.J., and LAVENDER, SIMMS, HARGRAVE, OPALA and WATT, JJ., concur;
HODGES and SUMMERS, JJ., dissent.