OPINION
We granted review in this case to determine whether a workers’ compensation claimant, Daniel Kramer, can rely on the statutory presumption of compensability, AS 23.30.120(a)(1), to establish, absent substantial evidence to the contrary, that a work-related injury resulted in a compensa-ble disability. In addition, we consider whether the trial court properly raised, sua sponte, the issue of Kramer’s status as an “independent contractor” under the last injurious exposure rule. Finally, we examine whether the superior court abused its discretion by ordering Kramer’s medical payments reinstated after ordering the case remanded for further proceedings before the Workers’ Compensation Board.
I
Daniel Kramer was injured in November 1984, while working as a cook for Wien Air Alaska. Kramer suffered back and shoulder injuries and received therapy and treatment from two doctors. Wien Air paid Kramer temporary total disability benefits from the date of his injury until May 1985 when Kramer was released for work as a chef. After working a short time as a chef for Enchanted Lake Lodge, Kramer suffered a “flare-up” of his shoulders and back injury which caused him to leave his job on July 14, 1985. The doctors who examined Kramer after the “flare-up” concluded that Kramer’s symptoms could be attributed to his original injury rather than his employment at Enchanted Lake Lodge.
In August 1985, Kramer applied for unemployment benefits which he received, from October 26, 1985 until March 22, 1986. 1 To procure these benefits, he certified on a biweekly basis that he was able to work as a chef.
On November 5, 1985, Kramer filed for an adjustment of his claim seeking temporary total disability benefits from July 15, 1985 and continuing indefinitely. Wien Air controverted Kramer’s claim and petitioned to have Enchanted Lake Lodge joined in the proceeding, citing the last injurious exposure rule. 2 Even so, Wien *473 Air reinstated Kramer’s temporary total disability benefits under a reservation of rights, in October 1986. However, it stopped paying benefits in October 1987, after the Board denied Kramer’s claim.
In proceedings before the Board in July 1987, Kramer argued that he was still disabled as a result of his 1984 injury and was entitled to temporary total disability compensation. Wien Air argued that Kramer’s sworn statements regarding his ability to work on his unemployment claims barred him from receiving any further disability benefits. Although Kramer had not made an earlier showing of disability before the Board, the Board was aware that Kramer was seeking a continuation of his temporary total disability benefits.
The Board did not apply the statutory presumption of compensability to the question of whether a continuing disability existed. Instead, it required Kramer to establish the fact by a preponderance of the evidence relying, in part, on our decision in
Brunke v. Rogers & Babler,
On appeal, the superior court reversed the Board’s decision ruling that “there was not a reasonable basis for the Board’s placing the burden of proof on Kramer” to establish the existence of a continuing disability. The court also ruled that Wien Air failed to rebut the presumption with substantial evidence. On remand, the superior court ordered the Board to determine the actual dates for which Kramer was drawing unemployment benefits and was thereby statutorily prohibited from receiving disability compensation. The court raised, sua sponte, the issue of Kramer’s possible “independent, contractor” status at Enchanted Lake Lodge and ordered reinstatement of Kramer’s medical benefits pending determination of the issues on remand. Wien Air then petitioned this court for review of the superior court’s decision.
II
A
In past cases, we have applied the presumption of compensability, AS 23.30.-120(a), primarily in situations where problems in proving causation or “work relatedness” would make it difficult, if not impossible, for an employee to establish a claim.
See Rogers Electric Co. v. Kouba,
In a case similar to the facts presented here, we assumed that the presumption applied to a claim for continuing temporary total disability, but held that the employer had overcome the presumption.
Bailey v. Litwin Corp.,
The Board relied on our decision in Brunke to conclude that the presumption of compensability does apply to establish the existence of a disability. In that case, we held that the employee bears the burden of proof of lost earning capacity in a claim for permanent partial disability compensation. 5 We stated that
the Board found that while MAPCO was liable for compensation for Brunke’s back injury, Brunke had failed to produce evidence of his post-injury earnings. Therefore, the Board denied his claim for compensation....
The Board apparently placed the burden of producing evidence of loss of earning capacity on Brunke.
The explicit language of AS 23.30.210 does not clarify who bears the burden of proof of lost earning capacity. We have not previously addressed this problem. We have, however, held that “[t]he burden of proof as to each element of the claim is on the claimant,” once the employer rebuts the presumption of com-pensability.
Loss of earning capacity is the defining characteristic of a compensable disability.
Hewing v. Peter Kiewit & Sons,
In
Brunke,
we were concerned with the employee/claimant’s obligation to present evidence concerning his current earning capacity so that the Board could make a reasoned assessment of his lost earning capacity under AS 23.30.210.
Brunke,
Our decision in Brunke does not support the Board’s ruling. Kramer was entitled to rely on the statutory presumption to meet his burden of production in establishing that he suffered from a continuing disability. 6 We affirm the superior court’s ruling on this matter and hold that AS 23.30.-120(a)(1) creates the presumption of a com-pensable disability once the employee has established a preliminary link between employment and injury.
Because the Board erred in its preliminary allotment of the burden of production, *475 it did not address the question of whether Wien Air successfully rebutted the presumption of compensability. Although Wien Air invites us to decide this issue on the record before us, we decline to reach this evidentiary issue without the benefit of a decision by the Board. 7
B
The superior court ordered the Board, on remand, to determine whether Kramer was an employee of Enchanted Lake Lodge or merely an independent contractor before adjudicating the question of employer liability. Wien objects to this order on the ground that Enchanted Lake Lodge never raised this issue, and further contends that Enchanted Lake Lodge was ready to concede that Kramer was an employee. Enchanted Lake Lodge does, in fact, concede in its brief that Kramer was its employee. Enchanted Lake Lodge asserts that it “has admitted throughout the proceedings below that Kramer was its employee.” 8
An issue not raised by any party is normally not considered on review, unless failure to address the issue would constitute plain error or result in a miscarriage of justice.
In re L.A.M.,
C
In its memorandum opinion, the superior court stated:
The cessation or continuance of Kramer’s medical benefits was not considered. The medical benefits ceased without ruling. The court hereby orders the reinstatement of Kramer’s medical benefits pending determination of the issues on remand to the Board.
Memo. Op. at 6. Wien argues that only the Board has the power to order reinstatement of medical benefits. Therefore, it contends that the superior court erred in not remanding this issue to the Board.
Kramer argues that the Board’s failure to address this issue constituted an “implicit denial of all benefits, including medical care, [because] Wien has refused to provide medical care since the date of the Board’s decision.” Accordingly, Kramer contends the superior court had the appellate power to restore the position of the parties to status quo ante and reinstate medical benefits.
AS 44.62.570 provides that the superior court, when sitting as an appellate court, may “exercise its independent judgment on the evidence” and “enter judgment setting aside, modifying, remanding or affirming the order or decision, without limiting or controlling in any way the discretion legally vested in the agency.” AS 44.62.570(c) & (e) (emphasis added). This statutory provision, we believe, is broad enough to allow the superior court to reinstate benefits pending a final determination by the Board, without impinging upon the Board’s discretion and power to adjudicate medical benefit claims. We note also that under Appellate Rule 609 the superior court, when sitting as an intermediate court of appeal, “shall have power to make such orders as are necessary and proper to aid its appellate jurisdiction.” Considerations pertaining to the medical or financial status of a party before the court are often, of necessity, implicated. In light of the broad grant of power contained in these provisions, we affirm the superior court’s exercise of discretion and its deci *476-482 sion to reinstate medical benefits pending final disposition by the Board.
The decision of the superior court is REVERSED in part and AFFIRMED in part.
Notes
. The Board erroneously found that Kramer received unemployment benefits starting August 8, 1985. On appeal to the superior court, Wien Air conceded that the Board was mistaken on this point.
. The last injurious exposure rule applies when subsequent employment exacerbates, aggravates, accelerates or combines with a pre-exist-ing condition to cause a disability. Full liability is imposed on the employer at the time of the
*473
most recent injury.
Ketchikan Gateway Borough v. Sating,
. The Board examined the time periods that Kramer was and was not collecting unemployment benefits. For the period that Kramer was collecting such benefits, the Board also ruled that Kramer was statutorily prohibited from collecting disability compensation. AS 23.30.-187 mandates that disability "compensation is not payable to an employee ... for a week in which the employee receives unemployment benefits.”
. Our cases are quite consistent in holding that the presumption shifts only the burden of production and that, once the employer rebuts the presumption with substantial evidence, the presumption drops out and the employee must establish each element of his claim by a preponderance of the evidence.
See generally Veco, Inc. v. Wolfer,
. As the superior court noted in its decision in the present case, the
Brunke
case involved claims for both temporary total and permanent partial disability compensation. It is significant that in
Brunke,
the Board applied the presumption of compensability to the temporary total disability claim and we affirmed their ruling.
Brunke,
.The fact that Kramer suffered a work related injury for which he received compensation from Wien Air is sufficient to establish a preliminary link between his employment and his continuing disability thus implicating AS 23.30.-120(a).
See generally Burgess Construction Co. v. Smallwood,
. The superior court, sitting as an appellate court, chose to rule on the record alone that Wien Air failed to rebut the presumption with substantial evidence. However, we are under no obligation to defer to the superior court’s judgment in this matter and vacate this portion of its order.
See Wolfer,
. Enchanted Lake Lodge argues primarily that it did not have proper notice of Kramer’s claim and therefore the claim against it should be barred. Neither the Board nor the superior court addressed this issue. Enchanted Lake Lodge asks us to reach the matter positing that the "interests of justice require a timely consideration of Enchanted Lake Lodge’s defense." In light of our conclusion regarding Kramer’s failure to prove his disability before the Board, this issue need not be addressed.
