INMAN, Judge.
The North Carolina Industrial Commission (the Commission) did not err in finding that an employees last injurious exposure to asbestos, which contributed to his development of an occupational disease, occurred during the thirty years he worked for his primary lifetime employer, based on the testimony of his former co-workers and medical experts, and in the absence of any evidence that he was exposed to asbestos at any subsequent job. Nor did the Commission err in calculating the employees average weekly wage based upon the employees earnings in the year immediately preceding his diagnosis.
This case arises out of a workers compensation claim filed by Johnny Ray Penegar (Decedent) against United Parcel Service (Employer or UPS) and Liberty Mutual Insurance Company (Carrier) (collectively Defendants), asserting compensation for Decedents mesothelioma. Carra Jane Penegar (Plaintiff), Decedents wife and executrix of his estate, was substituted as Plaintiff following Decedents death on 26 March 2015 during the pendency of this action. Both parties appeal from the opinion and award of the Full North Carolina Industrial Commission, which awarded Plaintiff compensation for all of Decedents medical expenses associated with his diagnosis of mesothelioma, total disability compensation, burial expenses, and death benefits.
Defendants argue that the Commissions findings that Plaintiff was injuriously exposed to asbestos while employed by UPS and that Plaintiffs last injurious exposure to asbestos occurred at UPS are unsupported by competent evidence.
Plaintiff argues that the Commission lacked jurisdiction to revise the Deputy Commissioners calculation of the average weekly wage, and, assuming jurisdiction, that the Commissions calculation was incorrect. Additionally, Plaintiff asserts that the Commission failed to address the issue, raised by Plaintiff on appeal from the Deputy Commissioners opinion and award, of the appropriate maximum compensation rate to be applied to Decedents claim. After careful review, we affirm the Commissions finding that Decedents last injurious exposure to asbestos occurred while Decedent was employed with UPS. We also affirm the Commissions recalculation of Decedents average weekly wage. We dismiss as moot Plaintiffs appeal from the Commissions failure to address the Deputy Commissioners calculation of the maximum compensation rate.
Factual and Procedural History
Decedent worked for UPS for thirty years, from 1967 until 1998, as a feeder driver based in UPSs Charlotte facility. Decedents duties included driving a tracker-trailer to destinations within 200 miles and back each day. The Charlotte facility was a large, open building approximately the size of two or three football fields, in which the main area, referred to by employees as the shop, consisted of various unseparated bays designated tractor shop or package car shop depending on what vehicles were being repaired or maintained in each. Decedent walked through the shop nearly every day to get from his truck to the employee locker room. Decedent would often stop in the shop to talk with mechanics while they worked.
UPS employed its own mechanics to service the vehicles in its fleet during the entirety of Decedents employment. Standard service tasks included maintaining and repairing brakes. In any given week, between three and seven brake jobs were performed in the shop. A typical brake job included banging the brake drums on the ground and using compressed air to clear off the brake dust.
The brake pads used by UPS during Decedents employment contained asbestos, and would release asbestos fibers into the air during brake jobs. Starting in the mid-1980s, UPS provided protective masks to the mechanics, but did not at any time provide a protective mask to Decedent.
Following his employment with UPS, from 1999 until 2002, Decedent drove a transfer van for Union County. He also worked for a church and for Union County Schools. Decedent continued to work part-time until 2012.
On 8 February 2013, Decedent was diagnosed with mesothelioma. Prior to his death on 26 March 2016, Decedent filed a claim with the Commission alleging that his mesothelioma developed as a result of asbestos exposure during his employment with UPS.
Plaintiff presented testimony from two former UPS mechanics and two medical experts. The mechanics testified that asbestos was present at the Charlotte facility. The medical experts testified that exposure to asbestos in the UPS facility caused Decedent to develop mesothelioma or contributed to him developing that disease. Defendants presented two expert witnesses-an expert in industrial hygiene and an expert in pathology.
The Deputy Commissioner issued an opinion and award finding that Decedent was last injuriously exposed to asbestos, and the hazards of developing mesothelioma, during his employment with UPS. The Deputy Commissioner awarded Plaintiff 500 weeks of wage compensation, calculated using Decedents average weekly wage from 1998 of $690.10, the last year he worked for UPS, and limited by the maximum compensation rate for 1998, so that Plaintiff was awarded $532.00 per week. The opinion and award also compensated Plaintiff for the medical expenses incurred treating Decedents mesothelioma.
Plaintiff filed a motion for reconsideration of the maximum compensation rate, arguing that the Deputy Commissioner should have used the maximum compensation rate from 2015-the date of Decedents death. The Deputy Commissioner denied Plaintiffs motion.
Both parties appealed to the Full Commission. Defendants challenged a majority of the Deputy Commissioners findings of fact and all but one of the conclusions of law. Plaintiff challenged only the Deputy Commissioners calculation of the appropriate maximum compensation rate.
The Commission, on 8 December 2016, issued its opinion and award finding that Decedents last injurious exposure to asbestos, and the hazards of mesothelioma, occurred while he was employed with UPS. The Commission recalculated and substantially reduced Decedents average weekly wage, based on Decedents earnings in the year prior to his diagnosis with mesothelioma, when he was no longer employed by UPS. Both parties appealed.
Analysis
I. Standard of Review
Appellate review of an award from the Industrial Commission is generally limited to two issues: (i) whether the findings of fact are supported by competent evidence, and (ii) whether the conclusions of law are justified by the findings of fact. Chambers v. Transit Mgmt. , 360 N.C. 609, 611, 636 S.E.2d 553, 555 (2006) (citation omitted). Unchallenged findings of fact are presumed to be supported by competent evidence, and findings of fact supported by competent evidence are binding on appeal. Chaisson v. Simpson , 195 N.C. App. 463, 470, 673 S.E.2d 149, 156 (2009). The Commissions conclusions of law are reviewed de novo . McRae v. Toastmaster, Inc. , 358 N.C. 488, 496, 597 S.E.2d 695, 701 (2004).
II. Defendants Appeal
Defendants challenge the Commissions findings that (1) the brakes used by UPS at its Charlotte facility while Decedent was employed there contained asbestos and (2) Decedent was at an increased risk of asbestos exposure during his employment with UPS. Defendants also argue that Plaintiff failed to present evidence that Decedent was not exposed to asbestos during his subsequent employments, and therefore, the Commissions finding that Decedents last injurious exposure to asbestos occurred at UPS is also unsupported by the evidence. We disagree.
A. Injurious Exposure
Defendants challenge the following findings of fact made by the Full Commission:
9. Vernon Thomas Pond worked as a mechanic for defendant-employer from 1972 to 2003 in the same facility as decedent. Mr. Pond testified, based upon his work and experience as a mechanic, that all brake shoes he worked on while employed by defendant-employer contained asbestos.
10. Bobby Bolin also worked for defendant-employer in mechanics, mostly performing maintenance on tractors and trailers. He began working for defendant-employer in or about 1967. Mr. Bolin testified that the work environment was pretty dusty and, even though he knew brakes contained asbestos as early as 1967, he was not aware that asbestos dust was bad until the mid-1980s. Mr. Bolin testified that defendant-employer provided mechanics with masks to protect against dust exposure in the mid-1980s and restricted the blowing of dust in the shop, but other employees walking through the shop were not provided with protective masks.
12. Based upon the preponderance of the evidence in view of the entire record, the Commission finds that the brakes utilized by defendant-employer in the maintenance of its trucks, tractors, and trailers contained asbestos. The competent and credible evidence of record demonstrates that such brakes contained asbestos from the mid-1960s until at least the mid-1980s and, to the extent the brakes continued to contain asbestos from the mid-1980s until decedents retirement, decedent was not supplied with a protective mask to curtail his exposure to asbestos fibers while in the shop.
23. Dr. Harpole testified that, although decedent did not have a giant exposure to the hazards of asbestos like someone who worked in an asbestos factory, being around aerosolized asbestos in the air daily, or even every few days over a period of years, led to significant asbestos exposure for decedent when he walked through defendant-employers shop.
24. Dr. Harpole testified that decedents mesothelioma was caused by exposure to asbestos and, more likely than not, that decedents work for defendant-employer caused or significantly contributed to his development of mesothelioma. He further testified that decedents exposure to asbestos in his employment with defendant-employer placed him at an increased risk, over that faced by the general public, for developing mesothelioma.
25. Dr. Harpoles opinions on causation and increased risk were based on his understanding that, although decedent did not perform brake work for defendant-employer, he did walk through the shop daily or every few days over the period of many years while brake jobs were being performed and brake dust was aerosolized. Dr. Harpole testified that if the mechanics were not grinding brakes, then it would make the causation and increased risk less likely, however, Dr. Harpole testified that, even if defendant-employers mechanics did not grind brakes, the use of compressed air aerosolized the asbestos fibers in the brakes, which would have been the key to decedents exposure.
26. From 1957 until 1960, decedent served in the U.S. Navy as a machinist mate aboard a ship, the U.S.S. Uhlmann, and was likely exposed to the hazards of asbestos during that time. However, Dr. Harpole testified that decedent likely had a protracted exposure over time, which he explained is much more of a risk for forming cancer than one giant exposure. Dr. Harpole further explained that the amount of plaque in decedents lungs suggested a longer-term exposure than what decedent would have experienced during his three to four years in the Navy.
28. Dr. Barry Horn is a pulmonologist and critical care specialist with experience evaluating and treating asbestos-related diseases, including mesothelioma. Plaintiff tendered Dr. Horn as an expert in pulmonary medicine and asbestos-related diseases, including mesothelioma, without objection from defendants. Dr. Horn never personally evaluated decedent, but reviewed the medical records and deposition testimony related to this case and generated a written report summarizing his conclusions and opinions.
29. Dr. Horn understood that decedent incurred asbestos exposure in his employment with defendant-employer when he walked through the maintenance areas of the shop twice each work day, when he presented for work and then when he left work at the end of his shift, over a period of decades. Dr. Horn further understood that the brake work in the shop decedent walked through did not involve grinding, but replacement work that would release asbestos fibers into the air for prolonged periods of time.
30. Dr. Horn testified that, to get mesothelioma, it requires remarkably little exposure to asbestos. Dr. Horn explained that, even though residual brake dust contains anywhere between 1 and 10 percent of asbestos, that amount is still significant enough to cause mesothelioma. Dr. Horn testified, When you blow out the dust, were talking about a lot of fibers in the air, so even if its one percent or less [than] one percent, were talking about a lot of fibers now.
31. Dr. Horn testified that an individuals risk for developing asbestos-related illness is dose dependent, meaning [t]he more asbestos you inhale and retain in your lungs, the more likely youll develop an asbestos-related illness and that includes mesothelioma. Dr. Horn explained that, because decedent walked back and forth in defendant-employers premises and breathed asbestos fibers as a consequence of his job over a period of decades, his exposure to asbestos was a substantial contributing factor in his risk for developing mesothelioma.
32. Dr. Horn further testified that decedents employment with defendant-employer placed him at an increased risk, over that faced by the general public, for the development of mesothelioma, because the general public is not exposed to levels of asbestos that would have existed in [defendant-employers] facility where brake repair was being performed.
35. There was no question for Dr. Horn that the brake linings defendant-employer used in the 1960s, 70s, and 80s contained chrysotile asbestos. As he testified, these brake linings may also have contained the more potent form of tremolite, or amphibole, asbestos. Dr. Horn reviewed several publications during the course of his deposition that concluded that, regardless of whether brake linings contained amphibole asbestos, or only chrysotile asbestos, exposure to the asbestos dust of either form could cause mesothelioma, and he agreed with those conclusions. Dr. Horn also explained that all government agencies in the United States take the position that chrysotile asbestos, alone, can cause mesothelioma, and that the doses of chrysotile do not have to be extremely high to do so.
36. As to background asbestos exposures, Dr. Horn agreed with Dr. Harpole that everyone receives some level of exposure, but testified that in order for him to conclude that someone has asbestos-related disease, their asbestos exposure has to be greater than background exposure.
37. Dr. Horn testified, and the Commission finds as fact, that decedent was clearly exposed to hazardous levels of asbestos during his Navy service, but decedent continued to have asbestos exposure thereafter while working for defendant-employer, and it was the latter exposure that either caused or substantially contributed to decedents development of mesothelioma.
47. Dr. Roggli testified that the brake products that were likely in use by defendant-employer during decedents employment contained chrysotile asbestos, but it was his opinion that chrysotile asbestos from friction products could not cause mesothelioma. Dr. Roggli did allow, though, that exposure to chrysotile mined from Canada, which generally is contaminated with tremolite (a more potent amphibole type of asbestos) could cause mesothelioma.
50. The Commission accords greater weight to the causation and increased risk opinions of Dr. Harpole and Dr. Horn over that of Mr. Agopsowicz and Dr. Roggli. Drs. Harpole and Horn have extensive experience specializing in the diagnosis and treatment of mesothelioma. Dr. Harpole served as decedents treating physician, which afforded him an opportunity to discuss directly with decedent his lifetime exposures to asbestos, and to form his opinions on causation and increased risk therefrom. Further, the Commission finds Dr. Horns opinions are well-reasoned, supported by research and a lifetime of study in the field of pulmonology, and in accord with those opinions of Dr. Harpole.
51. The Commission finds Dr. Rogglis opinions regarding an individuals cumulative exposures to asbestos and risk of developing mesothelioma contradictory when applied to decedent specifically and, therefore, assigns little weight to the expert opinions of Dr. Roggli. The Commission also assigns little weight to the testimony of Mr. Agopsowicz, who admits he is not qualified to render an opinion on causation in connection with decedents development of mesothelioma.
52. The preponderance of the evidence in view of the entire record establishes that decedent was exposed to greater than background levels of asbestos during his service in the Navy in the 1950s and throughout his employment with defendant-employer from 1967 through 1998.
53. Based on the preponderance of the evidence in view of the entire record, the Commission finds that decedents last injurious exposure to the hazards of asbestos occurred during his employment with defendant-employer.
54. The preponderance of the evidence in view of the entire record establishes that decedents work for defendant-employer exposed him to a greater risk of contracting mesothelioma over the general public, due to his above-background levels of asbestos exposure in the course of his employment, and that such exposure was a significant contributing factor to his development of mesothelioma.
55. The preponderance of the evidence in view of the entire record further establishes that mesothelioma caused or significantly contributed to decedents death.
Defendants challenge to the weight the Commission assigned to testimony is beyond our scope of review. See Adams v. AVX Corp. , 349 N.C. 676, 681, 509 S.E.2d 411, 414 (1998) ([O]n appeal, this Court does not have the right to weigh the evidence and decide the issue on the basis of its weight. The courts duty goes no further than to determine whether the record contains any evidence tending to support the finding. (quoting Anderson v. Lincoln Const. Co. , 265 N.C. 431, 434, 144 S.E.2d 272, 274 (1965) ) ). Instead, we review the challenged findings only to determine whether they are supported by competent evidence. Adams , 349 N.C. at 681, 509 S.E.2d at 414.
The Commissions findings are consistent with the witnesses testimonies and therefore are supported by competent evidence. Mr. Pond testified that he worked with UPS as a mechanic at the Charlotte facility from 1972 until 2003. He further testified that it was his knowledge that all brake pads, including those used by UPS during Decedents employment, contained asbestos, and that it was common practice for the mechanics to knock the brake drums on the floor and to use compressed air to clean the brake dust from the drums. Mr. Bolin testified that it was his understanding that the brake pads used by UPS contained asbestos, and that it was not until the 1980s that UPS began providing protective masks-and then only to the mechanics. Both witnesses testified that they frequently saw Decedent in the shop where these brake jobs were performed. Based on this testimony alone, the Commissions findings that (1) the brakes used by UPS during Decedents employment contained asbestos and (2) Decedent was exposed to increased levels of asbestos beyond that of the general public are supported by competent evidence.
The testimonies of Drs. Harpole and Horn, the medical experts called by Plaintiff, also provide competent evidence to support the Commissions findings of fact. Defendants argue that their expert witnesses, Mr. Agopsowicz and Dr. Roggli, offered testimony that contradicts the testimony of Plaintiffs witnesses. However, as we mentioned above, it is not within this Courts authority to reweigh the evidence and credibility of the witnesses. The Commission explicitly found that Plaintiffs expert witnesses presented more credible testimony than Defendants expert witnesses, and, because the Commission is the sole judge of credibility, the Commissions findings must stand. See, e.g., Adams , 349 N.C. at 680, 509 S.E.2d at 413 (The Commission is the sole judge of the credibility of the witnesses and the weight to be given their testimony. (citation omitted) ).
Accordingly, we hold that the Commissions findings that while employed with UPS, Decedent was exposed to asbestos at levels above those of the general public and was injured as a result are supported by competent evidence.
B. Last Injurious Exposure
Defendants also challenge the Commissions finding that Decedents last injurious exposure occurred while Decedent was employed by UPS.
In any case where compensation is payable for an occupational disease, the employer in whose employment the employee was last injuriously exposed to the hazards of such disease, and the insurance carrier, if any, which was on the risk when the employee was so last exposed under such employer, shall be liable. N.C. Gen. Stat. § 97-57 (2015) (emphasis added). The North Carolina Supreme Court, in Rutledge v. Tultex Corp. , 308 N.C. 85, 301 S.E.2d 359 (1983), explained that [t]he statutory terms last injuriously exposed mean an exposure which proximately augmented the disease to any extent, however slight. 308 N.C. at 89, 301 S.E.2d at 362-63 (citation omitted). Therefore, the Court concluded that to succeed, a plaintiff need only show: (1) that she has a compensable occupational disease and (2) that she was last injuriously exposed to the hazards of such disease in [the] defendants employment. Id. at 89, 301 S.E.2d at 362.
The Commission found that [t]here is no evidence of record that any of [Decedents subsequent] jobs exposed decedent to the hazards of asbestos. Defendants concede that, as written, this finding is factually true. We note that this finding, in turn, is logically consistent with the Commissions finding that Decedents last injurious exposure to asbestos occurred at UPS-because if there is no evidence of later exposure, the last exposure must necessarily have occurred at UPS.
Defendants argue that it is precisely because there is no evidence of record regarding Decedents asbestos exposure at his subsequent employment that the Commission erred in finding that decedents last injurious exposure to the hazards of asbestos occurred during his employment with defendant-employer. Defendants argue that Plaintiff failed to carry the burden to present evidence that Decedent was not exposed to asbestos in his employment subsequent to his employment with UPS.
Defendants argument is premised on the theory that in order for the Commission to find that Decedents last exposure was at UPS, it must first find, based on specific evidence presented by Plaintiff, that Decedent was not later exposed at his subsequent employers. We reject this argument based upon precedent and the legislative purpose of the Workers Compensation Act.
Our courts have consistently held that the Workers Compensation Act should be liberally construed so that the benefits under the Act will not be denied by narrow, technical or strict interpretation. Stevenson v. City of Durham , 281 N.C. 300, 303, 188 S.E.2d 281, 283 (1972) (citation omitted). Moreover, the purpose of the last injurious exposure doctrine is to eliminate the need for complex and expensive litigation of the issue of relative contribution by each of several employments to a plaintiffs occupational disease. City of Durham v. Safety Nat. Cas. Corp. , 196 N.C. App. 761, 764, 675 S.E.2d 393, 395 (2009). The doctrine provides a plaintiff with a reduced burden by requiring only a showing that the occupational exposure augmented a disease, however slight[,] as opposed to demonstrating how much each exposure resulted in the disease. See Rutledge , 308 N.C. at 89, 301 S.E.2d at 362.
Defendants assertion that the Commissions finding is not supported by the evidence misreads the Commissions finding. The Commission found that there was no evidence that Decedent was exposed to asbestos during his subsequent employment, not, as Defendants argue, that there was no evidence regarding Decedents exposure during his subsequent employment. This distinction, however minor, is essential, as we are bound by the Commissions findings when those findings are supported by the evidence in the record. Here, the Commissions finding that there is no evidence that Decedent was exposed to asbestos is supported by the record because there is no evidence that he was exposed to asbestos. Moreover, this finding supports the Commissions finding that Decedents last injurious exposure to asbestos was while he was employed by UPS.
In sum, we hold that in the absence of evidence that an employee was exposed to a hazardous material at subsequent employers, the burden shifts to the employer to produce some evidence of a subsequent exposure. Shifting the burden of production does not shift the burden of proof. But before the Commission can find that an employee was exposed to a hazardous condition at some subsequent employment, the record must include some evidence of exposure in that employment.
In Hardin v. Motor Panels, Inc. , 136 N.C. App. 351, 524 S.E.2d 368 (2000), the plaintiff worked as a typist from 1988 until 1993 for the defendant-employer, during which time she began suffering from symptoms associated with overuse tendinitis of the arms. Id. at 352, 524 S.E.2d at 370. The plaintiff resigned from her position and worked in several subsequent jobs, including at a department store, a fast food restaurant, and a gas and convenience store. Id. at 352-53, 524 S.E.2d at 370. Our Court held that the evidence in the record-the plaintiffs job duties, medical evidence indicating a worsening of her condition, and the plaintiffs own testimony that her symptoms were aggravated by her subsequent jobs-supported the Commissions finding that her last injurious exposure to carpal tunnel syndrome occurred while she worked with her subsequent employers, not while she worked with the defendant-employer. Id. at 359-60, 524 S.E.2d at 374.
In contrast to Hardin , this Court in an unpublished decision, Richardson v. PCS Phosphate Co. , 238 N.C. App. 198, 768 S.E.2d 64, 2014 WL 7149777 (2014) (unpublished), affirmed an opinion and award of the Commission finding that a plaintiffs last injurious exposure to asbestos, which resulted in his diagnosis of mesothelioma, occurred during his time with the defendant-employer (PCS) and not at his subsequent employment (East Group). The plaintiff worked for the defendant-employer, a phosphate products manufacturer, as a concentrator engineer before eventually rising to the rank of assistant mine manager. Id. at *1-*2. The only finding by the Commission addressing the plaintiffs subsequent employer stated:
After retiring from PCS, [the] [p]laintiff began working for the East Group in 1995 on the same PCS job site. [The] [p]laintiff testified that in this position, he performed the same job duties as he had while employed as Assistant to the Mine Manager. [The] [p]laintiff does not believe that he was injuriously exposed to the hazards of asbestos while working for the East Group.
Id. at *8. Our Court explained that [b]esides [the] plaintiffs own testimony that he performed essentially the same work at the same locations, there was no evidence presented as to whether asbestos was still present in the areas that [the] plaintiff visited while working for the East Group, whether there was asbestos maintenance or abatement projects going on after 1995, whether [the] plaintiffs activities in those same areas could have exposed him to asbestos after 1995, and no expert medical evidence linking [the] plaintiffs work at the East Group with his mesothelioma. Id. at *8. This Court held, in the absence of evidence establishing the nexus between [the] plaintiffs continuing work at the PCS facility for the East Group and exposure to asbestos[,] ... we are unable to conclude that the Full Commission erred in failing to find that [the] plaintiffs last injurious exposure occurred while he was working for the East Group. Id. at *8. Defendants appeal here, as the appeal in Richardson , challenges the Commissions finding that a plaintiffs last injurious exposure occurred with the defendant-employers. While Richardson is not binding authority, given the paucity of decisions regarding the issue before us, its reasoning is persuasive.
The purpose of the Workers Compensation Act and our precedent support the Commissions finding that, in the absence of evidence that Decedent was exposed to asbestos or any other substance causing mesothelioma during his subsequent employment, Decedents last injurious exposure to asbestos occurred at UPS. To require a plaintiff to present affirmative evidence that no exposure existed during all subsequent employment would impose a burden in stark conflict with purpose of the last injurious exposure doctrine and the general purpose of the Workers Compensation Act.
Here, Plaintiff provided competent evidence that Decedent was injuriously exposed to asbestos during his employment with UPS and that his exposure contributed to his development of mesothelioma. While there is no affirmative evidence proving a lack of exposure to asbestos in his subsequent employment, nothing in the evidence regarding his subsequent employment-as a van driver and a church and school employee-suggests any inference to the contrary. Without any such evidence, it would have been error for the Commission to find that Decedent was later exposed.
We recognize that it is a plaintiffs burden to prove his claim is compensable, see Henry v. A.C. Lawrence Leather Co. , 231 N.C. 477, 479, 57 S.E.2d 760, 761 (1950), and hold that under the facts presented, Plaintiff has done so. Based on the record, and in the absence of any evidence establishing a nexus between Plaintiffs subsequent employment and asbestos exposure, we conclude the Commission did not err in finding that Plaintiffs last injurious exposure to asbestos was at UPS.
III. Plaintiffs Appeal
Plaintiff argues that the Commission lacked jurisdiction to revise a determination made by a Deputy Commissioner in an opinion and award, when that issue was not raised by either party, and, assuming jurisdiction, that the Commission erred in calculating Plaintiffs average weekly wage and maximum compensation rate. We hold the Commission had jurisdiction and properly calculated Plaintiffs average weekly wage, but did not make a determination as to the proper maximum compensation rate.
A. Jurisdiction to Revise an Opinion and Award
It is well-established in North Carolina that the Industrial Commission has the authority to review, modify, adopt, or reject the findings of fact found by a deputy commissioner. Brewer v. Powers Trucking Co. , 256 N.C. 175, 182, 123 S.E.2d 608, 613 (1962). The Commission also has the power to review the evidence, reconsider it, receive further evidence, rehear the parties or their representatives, and, if proper, to amend the award .... Id. at 182, 123 S.E.2d at 613 (emphasis added). Inherent in these powers, our courts have long recognized the Full Commissions authority to strike [a] deputy commissioners findings of fact even if no exception was taken to the findings. Keel v. H & V Inc. , 107 N.C. App. 536, 542, 421 S.E.2d 362, 367 (1992).
Plaintiff argues that this Courts recent holding in Reed v. Carolina Holdings , --- N.C. App. ----, 796 S.E.2d 102 (2017), restricts the scope of issues the Commission may address on appeal from a deputy commissioners opinion and award. In Reed , we held that pursuant to Rule 701 of the North Carolina Industrial Commission we were without jurisdiction to address an argument raised, for the first time on appeal, by the defendant. Id. at ----, 796 S.E.2d at 108. This holding, however, refers only to this Courts jurisdiction to hear arguments not asserted, or ruled upon, below; it does not address the Commissions authority to review, modify, or amend a deputy commissioners opinion and award when an issue is not raised by the parties. The Commissions authority under the Rules promulgated by the Commission has previously been addressed by the North Carolina Supreme Court. In Brewer , the Court explained that these rules do not limit the power of the Commission to review, modify, adopt, or reject the findings of fact found by a Deputy Commissioner....
256 N.C. at 182, 123 S.E.2d at 613. Accordingly, we hold that the Commission was well within its authority and therefore had jurisdiction to amend an aspect of the Deputy Commissioners opinion and award, even those not raised by either party on appeal.
B. Average Weekly Wage
The determination of the plaintiffs average weekly wages requires application of the definition set forth in the Workers Compensation Act, and the case law construing that statute[,] and thus raises an issue of law, not fact. Boney v. Winn Dixie, Inc. , 163 N.C. App. 330, 331-32, 593 S.E.2d 93, 95 (2004) (internal quotation marks and citations omitted). We therefore review the Commissions calculation of Decedents average weekly wages de novo . Id. at 331-32, 593 S.E.2d at 95.
Section 97-2(5) of the North Carolina General Statutes provides a hierarchy of five methods of computing the average weekly wages[.] McAninch v. Buncombe Cty. Schools , 347 N.C. 126, 130, 489 S.E.2d 375, 378 (1997) (citation omitted). The five methods are ranked in order of preference, and each subsequent method can be applied only if the previous methods are inappropriate. Tedder v. A & K Enterprises , 238 N.C. App. 169, 174, 767 S.E.2d 98, 102 (2014) (citation omitted). Section 97-2(5) states in relevant part:
[Method 1] Average weekly wages shall mean the earnings of the injured employee in the employment in which the employee was working at the time of the injury during the period of 52 weeks immediately preceding the date of the injury, ... divided by 52;
[Method 2] if the injured employee lost more than seven consecutive calendar days at one or more times during such period, although not in the same week, then the earnings for the remainder of such 52 weeks shall be divided by the number of weeks remaining after the time so lost has been deducted.
[Method 3] Where the employment prior to the injury extended over a period of fewer than 52 weeks, the method of dividing the earnings during that period by the number of weeks and parts thereof during which the employee earned wages shall be followed; provided, results fair and just to both parties will be thereby obtained.
[Method 4] Where, by reason of a shortness of time during which the employee has been in the employment of his employer or the casual nature or terms of his employment, it is impractical to compute the average weekly wages as above defined, regard shall be had to the average weekly amount which during the 52 weeks previous to the injury was being earned by a person of the same grade and character employed in the same class of employment in the same locality or community.
[Method 5] But where for exceptional reasons the foregoing would be unfair, either to the employer or employee, such other method of computing average weekly wages may be resorted to as will most nearly approximate the amount which the injured employee would be earning were it not for the injury.
N.C. Gen. Stat. § 97-2 (2015). The final method, as set forth in the last sentence, clearly may not be used unless there has been a finding that unjust results would occur by using the previously enumerated methods. McAninch , 347 N.C. at 130, 489 S.E.2d at 378 (citation omitted).
The first three methods calculate the average weekly wages for an employee based on the employees actual employment with the employer in the 52-week time period immediately preceding the date of injury. Here, the Commission determined, and we agree, that these methods are inappropriate because of the length of time between Decedents employment and his diagnosis. The Commission found that Decedents date of injury was 8 February 2013, and that Decedent had not worked for UPS at any time in the 52 weeks immediately prior this date.
Regarding the fourth method, the Commission found that [t]he record contains no evidence by which calculation of decedents average weekly wage can be made.... This determination makes sense because the fourth method applies to employees who worked for only a short time for the defendant employer. Decedent worked for UPS for thirty years and had not worked for them in the fifteen years immediately prior to his diagnosis.
The Commission then found, consistent with the requirements of McAninch , 347 N.C. at 130, 489 S.E.2d at 378, that because the first four statutory methods for calculating average weekly wage are either inapplicable or would produce a result that is not fair and just to both parties ... the Commission finds that it is appropriate to use the fifth method to calculate average weekly wage. We agree with the Commissions findings.
The Commission, in applying the fifth method, sought to determine a way to produce a result that most accurately reflects the wages decedent would have continued to earn, but for his diagnosis with mesothelioma, and [that] is fair and just to both parties. The Commission looked at Decedents earnings for 2012 from his employment with Union County-$4,272.92-which were evidenced by Decedents Social Security Earnings Statement. The Commission then divided this amount by 52 weeks and obtained an average weekly wage of $82.17 with a resulting compensation rate of $54.78 for Decedent. Decedents Social Security Earnings Statement is competent evidence that supports the Commissions findings, and therefore, we are bound by such findings on appeal.
Plaintiff argues that this calculation of average weekly wages is improper because it does not reflect Decedents 2012 part-time post-retirement earning capacity. We reject this argument. Section 97-2 explicitly provides that the weekly calculation using the fifth method should most nearly approximate the amount which the injured employee would be earning were it not for the injury[,] not what the injured employee could be earning. N.C. Gen. Stat. § 97-2. Because there was evidence in the record of Decedents actual earnings in the years prior to his diagnosis, the Commissions findings are supported by such evidence, and we affirm the Commissions calculation of Decedents average weekly wages.
C. Maximum Compensation Rate
It is well established in North Carolina that it is the duty and responsibility of the full Commission to decide all of the matters in controversy between the parties. Hurley v. Wal-Mart Stores, Inc. , 219 N.C. App. 607, 613, 723 S.E.2d 794, 797 (2012) (internal quotation marks and citation omitted) (emphasis added). Plaintiffs appeal to the Full Commission challenged the Deputy Commissioners determination of the maximum compensation rate, but the Commission did not decide that issue. However, the average weekly wage calculated by the Commission fell far below the maximum compensation rate, so that Plaintiffs award was not subject to any limitation by the latter. Because we affirm the Commissions calculation of the average weekly wage, and because the calculated average weekly wage falls far short of any of the argued maximum compensation rates, Plaintiffs appeal of the issue is moot. Accordingly, we dismiss as moot Plaintiffs appeal of the maximum compensation rate.
Conclusion
For the foregoing reasons, we affirm the Commissions finding of fact that Decedents last injurious exposure to asbestos occurred while Decedent was employed by UPS and we affirm the Commissions recalculation of Decedents average weekly wage. We dismiss as moot Plaintiffs appeal regarding the determination of the maximum compensation rate.
AFFIRMED IN PART AND DISMISSED IN PART.
Judges ELMORE and DIETZ concur.
The Commission correctly notes that the date of diagnosis with regard to an occupational disease constitutes the date of injury[,] for the purposes of calculating average weekly wages. See Pope v. Manville , 207 N.C. App. 157, 168-69, 700 S.E.2d 22, 30 (2010).
Decedents Social Security Earnings Statement includes Decedents earnings for the years prior to his diagnosis, which indicate a decline in earing from 2008, $9,774.78, to 2012, $4,272.92.