OPINION
KLEINSCHMIDT, Judge.In this special action review of an industrial commission award granting benefits for time lost from work for medical treatment, the carrier raises the following issues:
1. Whether a July 8, 1981, notice of claim status became final because the claimant abandoned a request for hearing protesting it.
2. Whether the administrative law judge erred in awarding temporary compensation benefits because claimant’s absences from work were compensated by sick leave pay equivalent to his regular wages.
3. Whether claimant failed to meet his burden of proving a causal relationship between the injury and his condition.
Claimant, Donald S. Ballard, filed a claim for worker’s compensation benefits for an injury sustained April 24, 1981, while at work. On July 8, 1981, the carrier issued a notice of claim status accepting the claim for benefits but disallowing disability compensation because no time was lost from work in excess of seven days. On January 25, 1982, the carrier issued a notice of claim status terminating all benefits effective September 3, 1981, and determining that the injury resulted in no permanent disability. On February 19, 1982, claimant filed a request for hearing protesting both the July 8, 1981, and January 25, 1982, notices. The protest of the July 8, 1981, notice was untimely.
On March 22, 1982, the carrier issued a notice of claim status rescinding its January 25, 1982, notice. This notice indicated that claimant was continuing to receive medical treatment. On May 5, 1982, the commission sent a letter to the parties stating that a review of the file revealed that the carrier’s March 22, 1982, notice appeared to resolve the issues in dispute. The letter further stated that unless notified to the contrary, the commission would assume that claimant had abandoned his right to a hearing on the matter. The claimant did not directly reply to this letter.
On June 21, 1982, the carrier issued another notice of claim status terminating all benefits without permanent impairment. On August 16, 1982, claimant sent a letter to the commission stating that he had lost time from work and continued to need medical treatments. He requested an investigation to determine compensation benefits for the time lost from work from the *17injury and attending medical appointments. See generally A.R.S. § 23-1061(J).1
On August 31, 1982, claimant also filed a request for hearing protesting the June 21, 1982, notice. On September 22, 1982, the commission sent a letter to the parties stating that it could not determine whether the claimant was entitled to compensation and referred the matter to the hearing division. Thereafter, claimant withdrew his August 31, 1982, request for hearing. On December 6, 1982, a hearing was conducted and claimant testified to the time lost from work from the injury and subsequent medical treatments. Mr. Frank L. Russo, the employer’s supervisor in charge of payroll, testified regarding the employer’s sick leave policy.
The administrative law judge awarded 82.5 hours of compensation benefits for time lost from the injury and attending medical treatments subsequent to the injury. A supplemental decision affirming the award on review was issued and this special action followed.
JURISDICTION
For the first time on appeal, the carrier argues that the administrative law judge lacked jurisdiction to determine whether claimant was entitled to benefits because claimant abandoned his request for hearing protesting a July 8,1981, notice of claim status. As a general rule, failure to raise an issue before the administrative tribunal precludes appellate review. See Stephens v. Industrial Commission, 114 Ariz. 92, 559 P.2d 212 (App.1977). An exception exists if a jurisdictional defect is alleged. Calixto v. Industrial Commission, 126 Ariz. 400, 616 P.2d 75 (App.1980).
The carrier cites no authority to support its position that a notice of claim status that has been protested becomes res judicata if the protest is abandoned. Although the carrier’s assertion may be correct, we find that the carrier has waived the issue.
On - February 19, 1982, claimant filed a request for hearing protesting both the July 8, 1981, and January 25, 1982, notices of claim status.2 The request for hearing was not withdrawn. The carrier received copies of the correspondence between claimant and the commission regarding the commission’s attempt to administratively resolve the dispute pursuant to A.R.S. § 23-1061(J). However, the A.R.S. § 23-1061(J) request was not a response to the commission’s letter.
The administrative procedure set forth in A.R.S. § 23-1061(J) provided claimant with an alternative manner of determining whether he was entitled to compensation. Although the commission determined it could not resolve the issue without a hearing, the hearing conducted encompassed the same issues that would have been litigated pursuant to the February 19, 1982, request for hearing. Even if the claimant abandoned the February 19, 1982, request for hearing, the carrier has waived the issue because it failed to assert the finality of the July 8, 1981, notice at the A.R.S. § 23-1061(J) hearing. The res judicata effect of a notice of claim status is an affirmative defense that the carrier should have raised at the A.R.S. § 23-1061(J) hearing on the issue of whether claimant was absent in excess of seven days from work. Cf. Superlite Builders v. Industrial Commission, 126 Ariz. 51, 612 P.2d 507 (App.1980).
DOUBLE RECOVERY
Following the April 24, 1981, injury, claimant was absent from work on Monday, April 27, 1981; Tuesday, April 28, 1981, and Wednesday, April 29, 1981. *18Claimant was also absent for four hours on Thursday, April 30, 1981, and did not work Friday, May 1, 1981, and Monday, May 4, 1981. On Tuesday, May 5, 1981, claimant returned to his regular employment duties. Between May 8, 1981, and June 7, 1981, claimant was absent 37.5 hours from work because he was attending medical appointments. Claimant received sick leave pay, which was equivalent to his regular wages, for all times he was absent from work. According to claimant, the April 24, 1981, injury resulted in a loss of accrued sick leave hours. Sick leave hours could not be converted into wages unless claimant was sick.
A.R.S. § 23-1062(B) states:
The first installment of compensation is to be paid no later than the twenty-first day after written notification by the commission to the carrier of the filing of a claim except where the right to compensation is denied. Thereafter, compensation shall be paid at least once each two weeks during the period of temporary total disability and at least monthly thereafter. Compensation shall not be paid for the first seven days after the injury. If the incapacity extends beyond the period of seven days, compensation shall begin on the eighth day after the injury, but if the disability continues for one week beyond such seven days, compensation shall be computed from the date of the injury.
(Emphasis added).
Noting some ambiguity in the last sentence of A.R.S. § 23-1062(B), the administrative law judge interpreted the terms “incapacity” and “disability” to mean the same thing. Specifically, he found:
Considering all of the evidence as a whole and also considering the provisions of A.R.S. § 23-1062, the undersigned finds that the applicant’s incapacity extended beyond the period of the first seven days after his injury and that his disability continued for one week beyond those seven days. This is based upon construing the Statute to mean that for purposes of computing the beginning of compensation, the words ‘disability’ and ‘incapacity’ mean the same thing and that the fact that the applicant must leave his job in order to get medical treatment which was reasonably required because of his industrial injury means that he has sustained an incapacity or disability within the meaning of A.R.S. § 23-1062 B and therefore, his compensation should be computed from the date of his injury.
The administrative law judge found that claimant’s temporary compensation benefits commenced from the date of injury. Claimant was awarded 82.5 hours of temporary compensation, which represented the total time lost from work between the date of injury and June 7, 1982. In the supplemental award affirming the decision granting benefits, the administrative law judge indicated that claimant was entitled to receive both compensation benefits and sick leave pay because the sick pay was merely a benefit accumulated for past services rather than the injury. The supplemental decision also noted that the carrier improperly assumed that the threshold waiting period set out in A.R.S. § 23-1062(B) commenced with the claimant’s disability. The administrative law judge found that the waiting period consisted of consecutive calendar days following the date of injury.
On appeal, the carrier attacks the award because claimant received double recovery: both sick leave pay and temporary compensation benefits. The carrier contends that the terms “incapacity” and “disability” as set forth in the last sentence of A.R.S. § 23-1062(B) should both be interpreted to mean loss of earning capacity. According to the carrier, claimant sustained no loss of earning capacity because he received sick leave pay equivalent to his regular wages while absent from work.3
*19We agree with the carrier that the terms “incapacity” and “disability” both refer to loss of earning capacity. This court will look to prior and contemporaneous statutes in interpreting a statute whose meaning appears uncertain on its face and explain the meaning of the statute so that the statutory scheme is harmonious and consistent. State ex rel. Larson v. Farley, 106 Ariz. 119, 471 P.2d 731 (1970). The term “disability” as used in Workmen’s Compensation, § 23-901 et seq. refers to injuries which result in an impairment of earning power. Edwards v. Industrial Commission, 3 Ariz.App. 290, 413 P.2d 800 (1966). In Alsbrooks v. Industrial Commission, 118 Ariz. 480, 484, 578 P.2d 159, 163 (1978), the supreme court discussed the term “disability” appearing in A.R.S. § 23-1044(E),4 stating:
[W]hen the statute says ‘disability,’ it means earning capacity disability even though the effect upon the workman’s earning capacity may be minimal.
The carrier argues that claimant sustained no loss in earning capacity because he received sick leave pay while absent from work. Under our Worker’s Compensation Act the degree of temporary partial disability is calculated by comparing “wages earned before the injury” with the “wages which the injured person is able to earn thereafter.” A.R.S. § 23-1044(A). Thus, actual earnings before the injury are compared with earning capacity after the injury.5 It is apparent that actual earnings are not the same as earning capacity. While actual post-injury earnings will create a presumption of commensurate earning capacity, the presumption may be overcome by evidence showing that the actual earnings do not fairly reflect claimant’s earning capacity. Continental Casualty Co. v. Industrial Commission, 21 Ariz.App. 561, 521 P.2d 1019 (1974).
There are a number of reasons why an employee who receives the same or higher wages after an injury than he earned before the injury may nevertheless have suffered a loss of earning capacity. See 2 Larson, Worker’s Compensation Law § 57.31 et seq. (1983); Annot., 149 A.L.R.2d 413, 438 (1944). Wages paid an injured employee out of sympathy, or in consideration of his long service with the employer, clearly do not reflect his actual earning capacity, and for purposes of determining permanent disability are discounted. Martin v. Industrial Commission, 4 Ariz.App. 547, 422 P.2d 178 (1967). The same is true if the work for which claimant is paid is “made work.” See Roberson v. Industrial Commission, 98 Ariz. 336, 404 P.2d 419 (1965) (claimant, an apprentice steel worker, was given a job attending a coffeepot after being injured. The court held that he was entitled to temporary compensation benefits during this period until he was ready to return to regular work.) The issue in these situations is whether the wages received were really earned for regular work performed. In the instant case, the sick leave pay claimant received was for periods of time when claimant was unable to perform his regular employment duties because he was suffering from the affects of the injury or was receiving treatment for the injury.
Moreover, the ordinary meaning of the word “wages” as it applies to A.R.S. § 23-1044(A)6 is:
*20The value received for the duties and labors which a workman performs, i.e., the value received for services actually rendered.
Parise v. Industrial Commission, 16 Ariz.App. 177, 179, 492 P.2d 426, 428 (1971). We believe that sick leave benefits are not “wages” in the ordinary sense because the employee did not actually work the hours for which he received wages. Cf. Parise v. Industrial Commission, supra, (receipt of unemployment benefits did not constitute wages which the claimant was able to earn after the injury and were not deductible in computing the amount of temporary compensation benefits under the law as it existed prior to January 1, 1969). In the present case, the evidence indicated that sick leave benefits constituted a fringe benefit or incident of employment.
The Arizona Supreme Court has held time and again that the workmen’s compensation laws should be liberally construed so as to give the worker every benefit to which he is rightly entitled. Fullen v. Industrial Commission, 122 Ariz. 425, 595 P.2d 657 (1979). Lacking a clear expression of legislative intention, we will not read into A.R.S. § 23-1044(A), which sets forth the recovery for temporary compensation, a limitation which is not there. Indeed, the legislature has expressly provided in that very provision that unemployment benefits received during a period of temporary partial disability shall be considered as “wages able to be earned” for the purpose of measuring benefits. There is no such proviso for sick leave benefits. The remedy for the possible evils of double recovery lies exclusively with the legislature. Cf. Annot., 96 A.L.R.2d 941 (1964); Parise v. Industrial Commission, 16 Ariz.App. 177, 492 P.2d 426 (1971). There is no provision in our compensation statute forbidding benefits to an injured workman on the ground that he is receiving sick leave pay from his employer as an incident to his work. In the exercise of sound judicial discretion, it is important that the law not be amended by judicial construction. Tovrea Packing Co. v. Tapia, 63 Ariz. 503, 163 P.2d 852 (1945). Therefore, we find that it is not incongruous to receive sick leave pay and temporary disability benefits.7
MEDICAL PROOF
Lastly, the petitioners argue that the claimant failed to sustain his burden of proving through expert medical testimony that the industrial accident caused the injury for which the medical treatment was needed. They cite Western Bonded Products v. Industrial Commission, 132 Ariz. 526, 647 P.2d 657 (App.1982). This hypertechnical argument was raised for the first time in a supplemental memorandum *21to the petitioners’ request for an administrative review. The focus of the A.R.S. § 23-1061(J) hearing was whether the claimant met the threshold fourteen day disability requirement under A.R.S. § 23-1062(B). The petitioner carrier had already accepted the claimant’s compensation claim for the automobile accident. Western Bond Products does not apply in this procedural context. Furthermore, the record is sufficient to show that the claimant’s automobile accident caused the need for physical therapy. See Initial Physical Therapy Evaluation & Treatment Plan.
For the foregoing reasons, the award is affirmed.
BROOKS, J., concurs.. A.R.S. § 23-1061(J) provides:
The commission shall investigate and review any claim in which it appears to the commission that the claimant has not been granted the benefits to which such claimant is entitled. If the commission determines that payment or denial of compensation is improper in any way, it shall hold a hearing pursuant to § 23-941 within sixty days after receiving notice of such impropriety.
. Although the protest of the July 8, 1981, notice was untimely, the carrier never raised the issue in its request for review on appeal.
. The carrier does not raise the issue of whether the administrative law judge erred in finding claimant met the threshold seven day disability requirement set forth in A.R.S. § 23-1062(B) or in finding that claimant proved a disability extending one week beyond the seven days.
. A.R.S. § 23-1044(E) provides:
In case there is a previous disability, as the loss of one eye, one hand, one foot or otherwise, the percentage of disability for a subsequent injury shall be determined by computing the percentage of the entire disability and deducting therefrom the percentage of the previous disability as it existed at the time of the subsequent injury. This statute has been interpreted to mean that a preexisting disabling condition converts a subsequent scheduled impairment into an unscheduled impairment. Alsbrooks v. Industrial Commission, 118 Ariz. at 483, 578 P.2d at 162.
. A comparison of actual earnings and earning capacity is also made in determining the degree of permanent disability. A.R.S. § 23-1044(C) and (D).
. A.R.S. § 23-1044(A) provides:
For temporary partial disability there shall be paid during the period thereof sixty-six and two-thirds per cent of the difference between the *20wages earned before the injury and the wages which the injured person is able to earn thereafter. Unemployment benefits received during the period of temporary partial disability shall be considered wages able to be earned.
. The carrier correctly notes that the cases relied upon by the administrative law judge in his supplemental decision pertain to whether sick leave pay should be credited against an award. See Pet, Inc. Dairy Division v. Roberson, 329 So.2d 516 (Miss.1976); Robidoux v. Uniroyal, Inc., 116 R.I. 594, 359 A.2d 45 (1976). While it is true that the question of whether an employer is entitled to a credit for wages against an ultimate award of compensation is different than the issue of whether claimant is entitled to temporary disability benefits, case law which holds that sick leave pay is not credited against an award supports our holding. But see Roberson v. Industrial Comm'n, 98 Ariz. 336, 339, 404 P.2d 419, 421 (1965), which credited the "make-work” wages received against the compensation payments due. We need not decide the issue of whether the sick leave must be credited to compensation because that issue was not directly raised or adequately addressed.
If the payment of wages is intended to be in lieu of compensation, credit for wages is allowed. A credit is usually disallowed for any kind of sick pay for which it can be said that the claimant’s entitlement to the payment is based upon past service rather than on the injury itself. See 2 Larson, Worker’s Compensation Law § 57.46 at 10-164.15. The evidence indicates that claimant would receive sick leave benefits whether he was unable to work due to an industrial or non-industrial illness, and that claimant’s entitlement to sick leave pay was based upon accumulated past service. Thus, sick leave pay was not intended as a substitute for compensation benefits, but rather constituted a fringe benefit or incident of employment.