OPALA, Vice Chief Justice.
The dispositive issue on certiorari is whether the trial tribunal’s finding that no work-related injury had occurred is supported by probative evidence. We answer in the affirmative.
The claimant sought compensation for loss of hearing from exposure to high levels of industrial noise during eight years of work as a machinist for the employer. The term of employment began in late 1978 and ended in June of 1986; the claim was filed in January of 1988. Although the injury is claimed to have resulted from the cumulative effect of years of exposure to noise at the workplace, for purposes of this discussion we presume the injury occurred during the final month of employment, June 1986.
At the hearing on his claim he offered a medical report in which his physician found the presence of permanent hearing loss from “occupational noise exposure at the [employer’s] ... facility” and gave the claimant a 6 percent impairment rating for the left ear, 4.5 percent for the right ear and 4.75 percent binaurally. This medical evaluation- was performed in accordance with the standards required by Rule 37, Workers’ Compensation Court Rules,
which was in effect at the time of the claimed injury.
The employer maintained that no on-the-job injury had occurred and tendered proof on that issue which will be assessed later in this opinion. It also offered its own physician’s medical report in which the claimant’s hearing was evaluated in accordance with the standards prescribed by not only Rule 37, but also by those of Rule 32, which replaced Rule 37 as of June 1, 1987. Rule 32 was hence in effect at the time this claim was filed. As far as the parties are concerned the rules differ in only one respect. Rule 32 requires strict adherence to the criteria set out in the American Medical Association’s “Guides to the Evaluation of Permanent Impairment” [Guides] “in all claims filed on or after the effective date of this rule [June 1, 1987].” In that publication’s 1984 edition — which the claimant concedes would otherwise be applicable to this claim — the maximum sound frequency to be used in hearing tests is 3000 Hz, while the provisions of Rule 37 itself make 4000 hertz (Hz) the highest test frequency.
Applying Rule 37’s criteria, the employer’s medical expert found permanent impairment at sound levels
above
3000 Hz, but under Rule 32’s standards (or based on the then current 1984 edition of the Guides)
no
hearing loss was found.
We note that although the claimant challenged the Rule 32 standards applied by the employer’s physician and the employer objected to Rule 37’s use by claimant’s doctor, both reports were admitted into evidence. The trial judge stated she would take their objections under consideration, but on this record, the question of which rule applies stands unresolved.
The trial judge denied the claim based on the
sole finding
that the “claimant did not sustain an accidental personal injury arising out of and in the course of [his] employment.” On appeal, a three-judge review panel of the Workers’ Compensation Court affirmed the order.
In the Court of Appeals the claimant argued 1) the order denying the claim is not supported by any competent evidence and 2) the trial tribunal erroneously applied Rule 32 of the Workers’ Compensation Court Rules instead of Rule 37. Rule 32 was in effect when the claim was filed but not when the claimed injury occurred. According to the claimant, “Application of Rule 32 to Mr. Williams’ [the claimant’s] case,
merely because his claim was filed after its effective date,
would have the unconstitutional effect of depriving him of a remedy for his injury.”
(Emphasis added.) Although the employer argued in favor of Rule 32’s application, the prime issue tendered for resolution by that party’s brief is whether the record contains evidence sufficient to find that the claimant suffered no accidental injury.
The Court of Appeals sustained the claim’s denial, holding that Rule 37 is inconsistent with 85 O.S.Supp.1985 § 3(11), which requires use of the
then latest
(1984)
edition of the Guides, and that the latter (statute) must control. The appellate court then concluded that the change from Rule 37 to Rule 32, which took place after the injury is alleged to have occurred, had no substantial effect on the claimant’s rights. We granted the claimant’s quest for certio-rari review because the dispositive question to be addressed is not which rule applies, but whether the trial tribunal’s denial of this claim for want of an on-the-job injury is supported by the record. We hold that it is.
Nothing in the record supports the assumption that the Workers’ Compensation Court
both
chose to apply Rule 32 and found that the claimant
incurred no permanent hearing loss.
The very terms of the order show that the claim was denied solely
for lack of a work-related injury.
Only if a compensable injury is found to have occurred could the claimant be compensated for permanent impairment resulting from his harm. The trial judge’s finding that no on-the-job injury had occurred obviated any need for choosing between Rules 37 and 32.
Orders denying or awarding compensation must be supported by competent evidence
— i.e., that which is probative of the ultimate facts upon which the order rests.
As proof that the claimant’s hearing was not injured at work the employer introduced, through a company representative, “business records” bearing the results of two hearing tests (audiograms) taken by the claimant in late 1978 shortly after he started working for the employer. When those results are compared with the audio-grams taken by both the claimant’s and employer’s physicians, there appears to be
no considerable difference
in the test patterns. They all indicate practically the same degree of hearing loss in the frequency range
over
3000 Hz. Although the claimant testified he was “not aware” of the results, he admitted that his hearing was tested sometime near the beginning of employment.
It appears that claimant’s counsel might have initially objected to the admission of the 1978 audiograms, but when he came to be pressed further, he confined his protest to a
challenge of their probative value.
By doing so the claimant waived any objection to their
admissibility
(or competency).
In support of his probative value challenge the claimant made three assertions before the trial judge: 1) the tests “were not given by a physician or by any health care provider,” 2) the testers “did not fol
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OPALA, Vice Chief Justice.
The dispositive issue on certiorari is whether the trial tribunal’s finding that no work-related injury had occurred is supported by probative evidence. We answer in the affirmative.
The claimant sought compensation for loss of hearing from exposure to high levels of industrial noise during eight years of work as a machinist for the employer. The term of employment began in late 1978 and ended in June of 1986; the claim was filed in January of 1988. Although the injury is claimed to have resulted from the cumulative effect of years of exposure to noise at the workplace, for purposes of this discussion we presume the injury occurred during the final month of employment, June 1986.
At the hearing on his claim he offered a medical report in which his physician found the presence of permanent hearing loss from “occupational noise exposure at the [employer’s] ... facility” and gave the claimant a 6 percent impairment rating for the left ear, 4.5 percent for the right ear and 4.75 percent binaurally. This medical evaluation- was performed in accordance with the standards required by Rule 37, Workers’ Compensation Court Rules,
which was in effect at the time of the claimed injury.
The employer maintained that no on-the-job injury had occurred and tendered proof on that issue which will be assessed later in this opinion. It also offered its own physician’s medical report in which the claimant’s hearing was evaluated in accordance with the standards prescribed by not only Rule 37, but also by those of Rule 32, which replaced Rule 37 as of June 1, 1987. Rule 32 was hence in effect at the time this claim was filed. As far as the parties are concerned the rules differ in only one respect. Rule 32 requires strict adherence to the criteria set out in the American Medical Association’s “Guides to the Evaluation of Permanent Impairment” [Guides] “in all claims filed on or after the effective date of this rule [June 1, 1987].” In that publication’s 1984 edition — which the claimant concedes would otherwise be applicable to this claim — the maximum sound frequency to be used in hearing tests is 3000 Hz, while the provisions of Rule 37 itself make 4000 hertz (Hz) the highest test frequency.
Applying Rule 37’s criteria, the employer’s medical expert found permanent impairment at sound levels
above
3000 Hz, but under Rule 32’s standards (or based on the then current 1984 edition of the Guides)
no
hearing loss was found.
We note that although the claimant challenged the Rule 32 standards applied by the employer’s physician and the employer objected to Rule 37’s use by claimant’s doctor, both reports were admitted into evidence. The trial judge stated she would take their objections under consideration, but on this record, the question of which rule applies stands unresolved.
The trial judge denied the claim based on the
sole finding
that the “claimant did not sustain an accidental personal injury arising out of and in the course of [his] employment.” On appeal, a three-judge review panel of the Workers’ Compensation Court affirmed the order.
In the Court of Appeals the claimant argued 1) the order denying the claim is not supported by any competent evidence and 2) the trial tribunal erroneously applied Rule 32 of the Workers’ Compensation Court Rules instead of Rule 37. Rule 32 was in effect when the claim was filed but not when the claimed injury occurred. According to the claimant, “Application of Rule 32 to Mr. Williams’ [the claimant’s] case,
merely because his claim was filed after its effective date,
would have the unconstitutional effect of depriving him of a remedy for his injury.”
(Emphasis added.) Although the employer argued in favor of Rule 32’s application, the prime issue tendered for resolution by that party’s brief is whether the record contains evidence sufficient to find that the claimant suffered no accidental injury.
The Court of Appeals sustained the claim’s denial, holding that Rule 37 is inconsistent with 85 O.S.Supp.1985 § 3(11), which requires use of the
then latest
(1984)
edition of the Guides, and that the latter (statute) must control. The appellate court then concluded that the change from Rule 37 to Rule 32, which took place after the injury is alleged to have occurred, had no substantial effect on the claimant’s rights. We granted the claimant’s quest for certio-rari review because the dispositive question to be addressed is not which rule applies, but whether the trial tribunal’s denial of this claim for want of an on-the-job injury is supported by the record. We hold that it is.
Nothing in the record supports the assumption that the Workers’ Compensation Court
both
chose to apply Rule 32 and found that the claimant
incurred no permanent hearing loss.
The very terms of the order show that the claim was denied solely
for lack of a work-related injury.
Only if a compensable injury is found to have occurred could the claimant be compensated for permanent impairment resulting from his harm. The trial judge’s finding that no on-the-job injury had occurred obviated any need for choosing between Rules 37 and 32.
Orders denying or awarding compensation must be supported by competent evidence
— i.e., that which is probative of the ultimate facts upon which the order rests.
As proof that the claimant’s hearing was not injured at work the employer introduced, through a company representative, “business records” bearing the results of two hearing tests (audiograms) taken by the claimant in late 1978 shortly after he started working for the employer. When those results are compared with the audio-grams taken by both the claimant’s and employer’s physicians, there appears to be
no considerable difference
in the test patterns. They all indicate practically the same degree of hearing loss in the frequency range
over
3000 Hz. Although the claimant testified he was “not aware” of the results, he admitted that his hearing was tested sometime near the beginning of employment.
It appears that claimant’s counsel might have initially objected to the admission of the 1978 audiograms, but when he came to be pressed further, he confined his protest to a
challenge of their probative value.
By doing so the claimant waived any objection to their
admissibility
(or competency).
In support of his probative value challenge the claimant made three assertions before the trial judge: 1) the tests “were not given by a physician or by any health care provider,” 2) the testers “did not fol
low the OSHA protocol” and 3) “if they did not follow the OSHA protocol then they tend to overstate the amount of this man’s hearing loss because they reflect what is called a temporary threshold shift.” Since the claimant failed to explain what is meant by “OSHA protocol” and to reassert any of these arguments on review, we do. not reach the issue of their effect, if any, upon the employer’s evidence.
Claimant’s counsel had examined the employer’s witness by inquiring during the proceedings into his knowledge of procedures to test hearing as well as his competence as custodian of the documents. This voir dire examination revealed nothing that operates to destroy their probative effect.
Much like a medical opinion that appears competent on its face and is received into evidence, the initial audiograms have probative value unless,
through cross-examination,
a fatal flaw is revealed.
The following analysis illustrates this principle.
Claimant’s counsel attacked the probative effect of the employer’s evidence by arguing that no physician had administered the 1978 audiograms.
Assuming
the absence of a health care professional as an operator of the hearing test is fatal to its probative value, the claimant’s cross-examination of the employer’s witness in the instant claim failed to impair the effect of the documents as proof of the facts they establish on their face. A medical doctor’s signature appears above the line for “attending physician.” On cross-examination the record’s keeper was asked whether a doctor had “run” the tests. He answered that he does not know and was not present when the claimant’s hearing was tested. It cannot hence be said that this testimony utterly destroyed the audiograms’ probative value.
We therefore hold that the employer’s evidence has probative value that supports the order denying the claim based on the finding that no compensable injury has occurred.
THE COURT OF APPEALS’ OPINION IS VACATED; THE WORKERS’ COMPENSATION COURT’S ORDER DENYING THE CLAIM IS SUSTAINED.
HARGRAVE, C.J., and HODGES, LAVENDER, DOOLIN, ALMA WILSON and SUMMERS, JJ., concur.
SIMMS, J., concurs in judgment.
KAUGER, J., concurs in result.