Justice HOBBS
delivered the Opinion of the Court.
We granted certiorari in this workers' compensation case to determine whether an employee who was injured in 1990, awarded permanent and total disability ("PTD") benefits in 2002, and received a lump sum payment in 2007 is entitled to an additional lump sum payment under a 2007 amendment to section 8-48-406, C.R.S. (2009), of the Colorado Workers' Compensation Act, which increased the maximum aggregate lump sum an employee may receive.1 We find she is.
[396]*396We hold that the lump sum provision of the Colorado Workers' Compensation Act is procedural in nature. An employee's election of a Iump sum payment functions as an advance of an award of PTD benefits to which the employee already is entitled. Consequently, a lump sum payment does not create, eliminate, or modify the parties' existing rights or liabilities, which are determined as of the date of injury but vest only upon entry of an award of benefits. Instead, an employee's election of a lump sum payment simply alters the method of distribution of an existing award. Because the 2007 amendment is procedural in nature, it applies prospectively to requests for lump sum payments filed subsequent to the amendment's date of enactment, irrespective of the date of the employee's injury.
Because the court of appeals' opinion in Eight Thousand West Corp. v. Stewart, 37 Colo.App. 372, 546 P.2d 1281 (1976), does not constitute a prior judicial interpretation of particular language that has remained unchanged throughout subsequent amendments, we find it inapposite and overrule it to the extent it is inconsistent with this opinion. Accordingly, we affirm the judgment of the court of appeals.
I.
On June 1, 1990, Stephanie Nelson suffered an admitted work-related injury while employed by Specialty Restaurants Corp. On December 5, 2006, an administrative law judge ("ALJ") determined that Nelson's injury left her permanently and totally disabled as of October 21, 2002, and ordered Specialty Restaurants Corp. and Colorado Insurance Guaranty Association ("CIGA"), on behalf of Western Guaranty Fund Services,2 to pay Nelson PTD benefits. This opinion refers to petitioners Specialty Restaurants Corp. and CIGA c/o Western Guaranty Fund Services collectively as "CIGA."
Pursuant to section 8-48-406 of the Colorado Workers' Compensation Act, Nelson requested and received a lump sum payment of $26,292 in February 2007. This amount was the statutory maximum aggregate lump sum available at the time of Nelson's injury. Ch. 62, see. 1, § 8-48-406(2), 1990 Colo. Sess. Laws 515.
In May 2007, the General Assembly amended section 8-48-406 to, inter alia, increase the maximum aggregate lump sum to $60,000. Ch. 841, see. 9, § 8-483-406, 2007 Colo. Sess. Laws 1474-75. The General Assembly did not include an effective date in the 2007 amendment. The Colorado Division of Workers' Compensation ("the Division") issued a non-binding advisory interpreting the 2007 amendment as "[alpplicable to all claims without regard to date of injury" and "[elffective upon signature of the Governor," which occurred on May 30, 2007.
On October 28, 2007, Nelson applied for an additional Iump sum payment of $33,708, the difference between the newly-enacted $60,000 maximum aggregate lump sum and the $26,292 Iump sum payment she received in February 2007. CIGA objected to Nelson's request for the additional lump sum payment, arguing that the court of appeals' decision in Hight Thousand West entitles an employee only to the maximum aggregate lump sum available at the time of injury.
In a December 19, 2007 order, the Director of the Division rejected CIGA's argument and directed it to pay the additional lump sum. The Director reasoned that the 2007 amendment affects only the procedural method of disbursing previously awarded benefits. Therefore, the Director found that the 2007 amendment applies to requests for Iump sum payments filed after its enactment, irrespective of the date of injury. CIGA petitioned the Industrial Claim Appeals Office ("the ICAO") for review of the Director's order.
The ICAO issued an order on May 2, 2008, reversing the Director's order. The ICAO [397]*397did not engage in an interpretation of the 2007 amendment. Instead, it simply conelud-ed that the court of appeals' decision in Hight Thousand West controls and that the Director's determination was contrary to the holding in that case. Nelson appealed.
The court of appeals reversed the ICAOU's order. It determined that the 2007 amendment is procedural in nature and operates prospectively on requests for lump sum payments filed after its date of enactment. The court of appeals specifically declined to follow Eight Thousand West, reasoning that the opinion "provided little analysis and premised its conclusion on consideration of the effect retroactive application of the statute would have on insurers[, which is] a policy consideration within the province of the General Assembly and not this court." Nelson v. Indus. Claim Appeals Office, 219 P.3d 416, 420 (Colo.App.2009). We granted CIGA's petition for certiorari to determine whether Nelson is entitled to the additional lump sum payment under the 2007 amendment. We find she is.
II.
We hold that the lump sum provision of the Colorado Workers' Compensation Act is procedural in nature. An employee's election of a lump sum payment functions as an advance of an award of PTD benefits to which the employee already is entitled. Consequently, a lump sum payment does not create, eliminate, or modify the parties' existing rights or liabilities, which are determined as of the date of injury but vest only upon entry of an award of benefits. Instead, an employee's election of a lump sum payment simply alters the method of distribution of an existing award. Because the 2007 amendment is procedural in nature, it applies prospectively to requests for lump sum payments filed subsequent to the amendment's date of enactment, irrespective of the date of the employee's injury.
A. Standard of Review & Statutory Construction
Statutory construction is a question of law we review de novo. Williams v. Kunau, 147 P.3d 88, 36 (Colo.2006). Our primary objective in construing a statute is to effectuate the intent of the General Assembly. Davison v. Indus. Claim Appeals Office, 84 P.3d 1023, 1029 (Colo.2004). If the statutory language is clear, we interpret the statute according to its plain and ordinary meaning. Id. If the statute is reasonably susceptible to multiple interpretations, we may look to other aids in construction. Williams, 147 P.3d at 36. In addition, we will not construe a statute in a manner that assumes the General Assembly made an omission; rather, the General Assembly's failure to include particular language is a statement of legislative intent. Romer v. Bd. of County Comm'rs, 956 P.2d 566, 576 (Colo.1998).
We also review an administrative agency's conclusions of law de novo. Dep't of Labor & Employment v. Esser, 30 P.3d 189, 193 (Colo.2001). We give considerable weight to an ageney's reasonable interpretation of its own enabling statute, but we are not bound by its legal interpretations. Anderson v. Longmont Toyota, Inc., 102 P.3d 323, 326 (Colo.2004). Further, we traditionally give deference to the interpretation of a statute adopted by the officer or agency charged with its administration. Indus. Claim Appeals Office v. Orth, 965 P.2d 1246, 1254 (Colo.1998). The Division is the agency charged with administration of the Colorado Workers' Compensation Act, § 8-1-1038, C.R.S. (2009), including the calculation of lump sum payments, § 8-48-406(1).
The General Assembly explicitly stated its intent that the purpose of the Workers' Compensation Act is to provide an effective remedy for employees injured at work:
It is the intent of the general assembly that the "Workers' Compensation Act of Colorado" be interpreted so as to assure the quick and efficient delivery of disability and medical benefits to injured workers at a reasonable cost to employers, without the necessity of any litigation, recognizing that the workers' compensation system in Colorado is based on a mutual renunciation of common law rights and defenses by employers and employees alike.
[398]*398§ 8-40-102(1), C.R.S. (2009). To effectuate its remedial and beneficent purposes, we must liberally construe the Act in favor of the injured employee. Williams, 147 P.3d at 36, 39; Davison, 84 P.3d at 1029; Univ. of Denver v. Indus. Comm'n of Colo., 138 Colo. 505, 509, 335 P.2d 292, 294 (1959).
B. Lump Sum Payment of PTD Benefits
Under the Act, an employee is permanently and totally disabled when she is "unable to earn any wages in the same or other employment." § 8-40-201(16.5)(a), C.R.S. (2009). The Division awards a permanently and totally disabled employee a fixed percentage of her average weekly wage, to continue until her death, irrespective of the employee's life expectancy. § 842-111(1), C.RS. (2009). Accordingly, PTD benefits provide wage loss protection for the life of an injured employee who is unable to return to the work force. Culver v. Ace Elec., 971 P.2d 641, 652 (Colo.1999). While the substantive rights and liabilities of the parties to a workers' compensation case are determined as of the date of the employee's injury, City of Florence v. Pepper, 145 P.3d 654, 659-60 (Colo.2006); Am. Comp. Ins. Co. v. McBride, 107 P.3d 973, 977 (Colo.App.2004), they vest only upon entry of an award of benefits, McBride, 107 P.3d at 979; Wood v. Beatrice Foods Co., 813 P.2d 821, 823 (Colo.App.1991).
Nearly a century ago, the General Assembly determined that the Industrial Commission of Colorado (now the Division) could exercise discretion to order payment of part or all of a PTD compensation award in the form of a lump sum. Ch. 210, see. 82, 1919 Colo. Sess. Laws 784. Since 1919, lump sum payments have been calculated based both on a four-percent reduction from the default biweekly partial payments and on the employee's life expectancy. Compare id. ("[The Commission shall fix the amount to be paid based on the present worth of partial payments considering interest at 4% per annum, and less deductions for the contingenc[y] of death ...."), with § 8-48-406(1) ("[Thhe Director shall calculate amounts to be paid based on the present worth of partial payments, considering interest at four percent per annum, and less a deduction for the contingency of death."). In other words, a lump sum is an advance payment of the amount the employee is entitled to receive via bi-weekly payment over the remainder of her life expectancy, reduced by four-percent to discount for present value and capped at the maximum aggregate provided by statute. See § 8-48-406(1). If an employee is entitled to more than the maximum aggregate lump sum available, her remaining bi-weekly payment is reduced by the amount of the lump sum payment spread out over the remainder of her life expectancy. See 17 Douglas R. Phillips & Susan D. Phillips, Colorado Practice Series: Colorado Workers' Compensation Practice and Procedure § 6.61 at 385 (2d ed.2005). Accordingly, the amount of an employee's PTD award remains unchanged irrespective of a lump sum payment.
Since the statute's inception, the General Assembly has provided a cap to the total amount an employee may receive via lump sum payment.3 See ch. 210, see. 82, 1919 Colo. Sess. Laws 734. The original aggregate could not exceed $8,125. Id. Periodically, the General Assembly has increased this cap to account for changing economic realities. For example, in 1971 the General Assembly increased the aggregate to $20,266.75. Ch. 225, see. 14, § 81-13-32), 1971 Colo. Sess. Laws 910-11. The General Assembly explicitly provided that the 1971 amendment was effective July 1, 1971. Ch. 225, see. 28, 1971 Colo. Sess. Laws 914. In 1975, the General Assembly increased the aggregate to $26,292, effective September 1, 1975. Ch. 71, sees. 88, 68, § 8-52-108(2), 1975 Colo. Sess. Laws 305, 311. The 1990 re-codification of the entire Workers' Compensation Act, effective July 1 of that year, included the same $26,292 cap as the 1975 amendment. Ch. 62, sees. 1, 78, § 8-43-406(2), 1990 Colo. Sess. Laws 515, 576. In 1991, the General Assembly again increased [399]*399the aggregate to $37,560. Ch. 219, see. 41, § 8-43-406(2), 1991 Colo. Sess. Laws 1326. The 1991 amendment specified that it "shall take effect July 1, 1991, and shall apply to injuries occurring on or after said date." Ch. 219, see. 61, 1991 Colo. Sess. Laws 1342.
In 2007, the General Assembly made significant changes to the lump sum provision. First, it determined that distribution of a lump sum payment no longer lies within the discretion of the Division, as it had since 1919. Instead,
[alt any time after six months have elapsed from the date of injury, the claimant may elect to take all or any part of the compensation awarded in a lump sum by sending written notice of the election and the amount of benefits requested to the carrier or the noninsured or self-insured employer.
Ch. 341, see. 9, § 8-48-406(1), 2007 Colo. Sess. Laws 1475 (emphasis added). Thus, the employee may choose whether to receive a lump sum payment in exchange for the four-percent reduction, and, unless she affirmatively elects to do so, PTD benefits are paid bi-weekly.
Second, as it has done periodically since the 1919 enactment of the lump sum provision, the General Assembly chose to increase the maximum aggregate lump sum available: "tlhe aggregate of all lump sums granted to a claimant who has been awarded compensation shall not exceed sixty thousand dollars." Ch. 841, see. 9, § 8-48-406(2), 2007 Colo. Sess. Laws 1475. The General Assembly did not include an effective date in the 2007 amendment.
C. Prospective, Retroactive, and Retrospective Operation of Statutes
A statute is applied prospectively if it operates on transactions that occur after its effective date; it is applied retroactively if it operates on transactions that have already occurred or on rights and obligations that existed before its effective date. Ficarra v. Dep't of Regulatory Agencies, 849 P.2d 6, 11 (Colo.1993). Absent legislative intent to the contrary, a statute is presumed to be prospective in its operation. § 2-4-202, C.R.S. (2009); Ficarra, 849 P.2d at 18. A statute may operate retroactively if the General Assembly clearly so intends and if it does not violate the constitutional prohibition against retrospective application. Colo. Const. art. II, § 11; Ficarra, 849 P.2d at 11-12.
"A statute is retrospective if it takes away or impairs vested rights acquired under existing laws, or creates a new obligation, imposes a new duty, or attaches a new disability, in respect to transactions or considerations already past." In re Estate of DeWitt, 54 P.3d 849, 854 (Colo.2002) (internal quotations omitted); see also People ex rel. Albright v. Bd. of Trustees of Firemen's Pension Fund, 103 Colo. 1, 13, 82 P.2d 765, 771 (1938). A vested right is one with an independent existence; it is no longer dependent for its assertion upon the common law or statute under which it was acquired. Ficarra, 849 P.2d at 15.
A statute is substantive if it creates, eliminates, or modifies vested rights or liabilities. In re Estate of DeWitt, 54 P.3d at 854 n. 3. A statute is not substantive merely because the facts upon which it operates occurred before the adoption of the statute. Id. at 855. In contrast, a procedural statute relates only to remedies or modes of procedure to enforce existing substantive rights or liabilities, and thus may be applied retroactively without invoking constitutional considerations. Id. at 854, 854 n. 3. In other words, retroactive operation of a substantive statute constitutes impermissible retrospective application of that statute. As we explained over seventy years ago, "an act is not retro[spec-tive] if it applies to persons who presently possess a continuing status even though a part or all of the requirements to constitute it were fulfilled prior to the passage of the act or amendments thereto." Albright, 1033 Colo. at 13, 82 P.2d at 771.4 Generally, a statute that leaves the rights and obligations [400]*400of each party in balance is not retrospective. See Taylor v. Pub. Employees Ret. Ass'n, 189 Colo. 486, 488, 542 P.2d 383, 385 (1975).
While the substantive rights and liabilities of the parties to a workers' compensation case are determined by the statute in effect at the time of an employee's injury, procedural changes to the statute become effective during the pendency of a claim. City of Florence, 145 P.3d at 659-60; McBride, 107 P.3d at 977. The employee's right to receive benefits and the employer's and insurer's liability to pay those benefits gain independent legal existence upon entry of an award of benefits. See Ficarra, 849 P.2d at 15. Accordingly, the parties' rights and liabilities, although determined as of the date of injury, do not vest until entry of an award of benefits. McBride, 107 P.3d at 979; Wood, 813 P.2d at 823.
D. Application to this Case
1. The 2007 Amendment is Procedural in Nature
The plain language of section 8-48-406 evinces legislative intent that a lump sum payment function as an advance on an award of PTD benefits to which the employee already is entitled. See Univ. of Denver, 138 Colo. at 510-11, 335 P.2d at 294. Entry of an award of PTD benefits vests an employee with a right to those benefits and imposes upon the employer and insurer a liability to pay those benefits. See Ficarra, 849 P.2d at 15; McBride, 107 P.3d at 979, Wood, 813 P.2d at 823. The employee then has the option to receive her award via either the default bi-weekly payments or lump sum payment.
An employee's choice to receive a lump sum payment does not create, eliminate, or modify vested rights or liabilities. See In re Estate of DeWitt, 54 P.3d at 854 n. 3. At the time an employee elects to take a Iump sum payment, the parties "possess a continuing status" by virtue of the existing award of PTD benefits. See Albright, 103 Colo. at 13, 82 P.2d at 771. Instead, election of a lump sum payment simply alters the method of distribution of the existing award by requiring the employer and insurer to advance payment of part or all of the compensation due. In so doing, the General Assembly enacted safeguards to ensure that the parties' interests are balanced. See Taylor, 189 Colo. at 488, 542 P.2d at 385. In exchange for receiving an advanced payment of awarded benefits via lump sum, the employee receives four percent less than she otherwise would have via bi-weekly partial payments. See § 8-48-406(1). Because an employee's election of a lump sum payment constitutes only a change in how and when the benefits are distributed, subsection 8-48-406(1) is procedural in nature.
For similar reasons, subsection 8-48-406(2) also is procedural in nature. For nearly a century, the General Assembly periodically has increased the maximum aggregate lump sum available to injured employees to ensure that distribution of their award reflects current economic realities. These amendments recognize that changing economic cireumstances affect permanently and totally disabled employees-who depend on their PTD benefits in the same way that uninjured employees depend on their wages-irrespective of the date of their injuries. Such amendments do not create, eliminate, or modify vested rights or Habilities; they affect only the method of distributing the award and not the award itself. See In re Estate of DeWitt, 54 P.3d at 854 n. 3. A doubling of the maximum aggregate lump sum to which an employee is entitled does not double the employer's or insurer's liability. Instead, it simply increases the proportion of that already vested liability that may be subject to advancement via lump sum payment. Moreover, the 2007 amendment, like all its predecessors, requires that the increased maximum aggregate lump sum available is subject to the four-percent reduction to account for present value. § 8-43-406(1). Accordingly, the 2007 amendment increasing the maximum aggregate lump sum to $60,000 is procedural in nature.
Our plain language interpretation of the 2007 amendment as procedural in nature is supported both by the fact that the lump sum provision is located within the "Procedure" article of the Act, §§ 8-48-101 to -503, C.R.S. (2009), and by the legislative history [401]*401of the amendment. The 2007 amendment to section 8-48-406 was part of Senate Bill 258, a larger bill affecting various procedures applicable to workers' compensation cases. See S.B. 258, 66th Gen. Assemb., Ist Sess. (2007). In introducing the bill to the Senate Committee on State, Veterans and Military Affairs, bill sponsor Senator Peter Groff stated, "Let me make clear from the outset that this bill does not affect benefit levels in any way." Hearings on S.B. 258 before the S. Comm. on State, Veterans & Military Affairs, 66th Gen. Assemb., lst Sess. (Apr. 25, 2007). Scott Meiklejohn of the Workers' Compensation Education Association testified in support of the bill, explaining that the General Assembly had not amended the Iump sum cap for nearly twenty years and that "the realities of the current economics" necessitated an increase. Id.5
Our interpretation of the lump sum provision as procedural in nature likewise conforms to applicable rules of statutory construction. First, by providing employees with more autonomy over when and how their awarded benefits are distributed, our interpretation accords with the rule that we liberally construe the Colorado Workers' Compensation Act in favor of the injured employee to effectuate its remedial and beneficent purposes. See Williams, 147 P.3d at 36, 39; Davison, 84 P.3d at 1029; Univ. of Denver, 138 Colo. at 509, 335 P.2d at 294.
Second, our interpretation conforms to the rule that we give considerable weight to the Director's reasonable interpretation of the Division's enabling statutes. Anderson, 102 P.3d at 326; Orth, 965 P.2d at 1254. The Director, charged with administration of the Act, § 8-1-1083(8), determined that the 2007 amendment affects only the procedural method of disbursing previously awarded benefits and applies to requests for lump sum payments filed after its enactment, irrespective of the date of injury. The Director's determination was consistent with the Division's earlier advisory, stating that the amendment is "[alpplicable to all claims without regard to date of injury" and "[elffective upon signature of the Governor." We agree with the Director's reasonable interpretation of seetion 8-438-406 of the Division's enabling statutes because it is consistent with the plain meaning of the language the General Assembly chose to utilize in the 2007 amendment.
Two recent court of appeals opinions are also in accord with our interpretation. In McBride, the court of appeals determined that a statutory amendment subjecting an existing award of PTD or permanent partial disability benefits to garnishment for child support is procedural in nature. 107 P.3d at 977. Similarly, in Division of Child Support Enforcement v. Industrial Claim Appeals Office, the court of appeals held that an amendment subjecting an existing workers' compensation lump sum settlement to attachment and lien for unpaid child support is procedural. 109 P.3d 1042, 1043 (Colo.App.2004). Where an amendment dictating who is entitled to an existing award of workers' compensation benefits is procedural, so too is an amendment altering how or when payment of an existing award of workers' compensation benefits must occur.
CIGA argues that an employee's election of a lump sum payment may cause it to pay more than it otherwise would have, and therefore any increase to the maximum aggregate lump sum available by statute is substantive in nature. We disagree. The General Assembly designed calculation of lump sum payments to equalize the parties' interests by ensuring that, on balance, a lump sum payment does not increase or decrease the total amount the employer or insurer pays to the claimant. See § 8-48-406(1). In any particular case, an employer or insurer may in fact pay more or less as a result of an employee electing to take a Iump [402]*402sum payment. On the one hand, an employee electing a lump sum payment may die before reaching her life expectancy, causing the employer or insurer to pay more via lump sum than it otherwise would have via default bi-weekly partial payments. On the other hand, if an employee simply reaches her life expectancy or lives beyond it, the employer or insurer will have paid less via lump sum than it otherwise would have via biweekly payments, due to the four-percent discount.
2. The 2007 Amendment Applies Prospectively
Having determined that the lump sum provision, as amended in 2007, is procedural in nature, we turn to its applicability to awards based on injuries occurring prior to the amendment's enactment. While the substantive rights and liabilities of the parties to a workers' compensation case are determined by the statute in effect at the time of an employee's injury, procedural changes to the statute become effective during the pendency of a claim. City of Florence, 145 P.3d at 659-60; McBride, 107 P.3d at 977. In contrast to earlier amendments to the lump sum provision, the General Assembly did not include an effective date in the 2007 amendment.
CIGA argues that, because the 1991 amendment specified that it "shall take effect July 1, 1991, and shall apply to injuries occurring on or after said date," ch. 219, see. 61, 1991 Colo. Sess. Laws 1342, the General Assembly also must have intended that the 2007 amendment apply only to injuries oceur-ring after its enactment. Such an interpretation runs contrary to the rules of statutory construction that we interpret statutes according to their plain language, Davison, 84 P.3d at 1029, and that the General Assembly's failure to include particular language is a statement of legislative intent, not a mere omission, Romer, 956 P.2d at 576. Contrary to CIGA's argument, the effective date language in the 1991 amendment demonstrates that the General Assembly has in the past included language limiting an increase in the maximum aggregate lump sum to awards based on injuries occurring after the amendment, but chose not to include such limiting language in the 2007 amendment. This omission constitutes legislative intent that the 2007 amendment applies irrespective of the date of an employee's injury.
There is considerable confusion throughout the record with respect to whether the 2007 amendment applies prospectively or retroactively.6 Absent legislative intent to the contrary, a statute is presumed to be prospective in its operation. § 24-202; Ficarra, 849 P.2d at 11. The General Assembly expressed no intent that the 2007 amendment apply retroactively, so we must presume that section 8-48-406 operates prospectively.
That the General Assembly intended the 2007 amendment to operate prospectively is supported by the fact that the relevant transaction with respect to operation of the lump sum provision is the employee's request for a lump sum payment. A statute is applied prospectively if it operates on transactions that occur after its effective date; it is applied retroactively if it operates on transactions that have already occurred or rights and obligations that existed before its effective date. Ficarra, 849 P.2d at 11. Here, Nelson requested the additional lump sum payment after the 2007 amendment's enactment. Because the lump sum provision only functions where an employee has affirmatively chosen to elect a lump sum payment, the operative transaction is the employee's request for such payment. Applying Ficarra, the new $60,000 maximum aggregate operates on Nelson's request for the additional lump sum payment-a transaction occurring after the amendment's enactment. See 849 P.2d at 11. Accordingly, the 2007 amendment is prospective in its operation and ap[403]*403plies to all requests for lump sum payments made after the amendment's date of enactment, irrespective of the date of injury.
In this case, Nelson's rights and CIGA's liabilities vested on December 5, 2006, when the ALJ determined that Nelson was permanently and totally disabled and ordered CIGA to pay her PTD benefits. Neither the $26,292 lump sum payment Nelson requested and received in February 2007, nor the additional $33,708 payment to which we find Nelson is entitled, alter these rights or liabilities. Instead, the lump sum payments constitute an advance of the award of PTD benefits to which Nelson already is entitled. To account for any burden CIGA may suffer as a result of this change in the method of distribution of Nelson's award, Nelson will receive four percent less than she otherwise would have via bi-weekly partial payment. Nelson requested the additional lump sum payment five months after the General Assembly amended section 8-48-406. Because the amendment is procedural in nature and operates prospectively on requests filed subsequent to its enactment, Nelson is entitled to the additional lump sum payment of $33,708.
E. Prior Judicial Precedent
The General Assembly is presumed to be aware of the judicial precedent in an area of law when it legislates in that area. Vaughan v. McMinn, 945 P.2d 404, 409 (Colo.1997). Additionally, the General Assembly is presumed to adopt the construction which prior judicial decisions have placed on particular language when such language is employed in subsequent legislation. Id. When a statute is amended, the judicial construction previously placed upon the statute is deemed approved by the General Assembly to the extent that provision remains unchanged. Rauschenberger v. Radetsky, 745 P.2d 640, 643 (Colo.1987).
CIGA argues that the Division and the court of appeals erred in failing to apply the presumption we articulated in Vaughan and Rauschenberger. Specifically, CIGA asserts that the court of appeals' decision in Wight Thousand West, refusing to apply the maximum aggregate lump sum prescribed by the 1971 amendment to an employee whose injury occurred prior to the amendment, precludes application of the 2007 amendment to Nelson's request for an additional lump sum payment. We disagree.
We are not bound by Hight Thousand West and find the opinion unpersuasive. The opinion holds that "[clivil liabilities already incurred may not be changed by statute unless specifically so provided by the legislature." Eight Thousand West, 37 Colo.App. at 374, 546 P.2d at 1282. By finding the 1971 amendment inapplicable to an employee who suffered his injury prior to the amendment, the opinion implies that amendment of the maximum aggregate lump sum available constitutes a substantive change that cannot be applied retroactively to employees whose injuries occurred prior to the amendment. However, the opinion lacks convincing legal analysis and relies on a vague and unsupported claim that a contrary construction "could create chaos in the operations of workmen's compensation insurers whose premium rates and loss reserves are computed on their potential lability inherent in the statutory scheme that was in effect upon issuance of the insurance." Id. at 374, 546 P.2d at 1283.
Furthermore, we find inapplicable the presumption that the General Assembly, in amending the lump sum provision in 2007, adopted the court of appeals' construction of that provision in Hight Thousand West. As an initial matter, the Hight Thousand West opinion did not construe any particular statutory language. Moreover, the General Assembly has altered the relevant statutory language since the 1971 amendment. The 1971 lump sum provision declared that "[the aggregate of all lump sums granted to a claimant who has been found and declared by the director to be permamently and totally disabled shall not exceed twenty thousand two hundred sixty-six dollars and seventy-five cents." Ch. 225, see. 14, § 81-18-82), 1971 Colo. Sess. Laws 910-11 (emphasis added).
In contrast, the current statutory language requires that "[the aggregate of all lump sums granted to a claimant who has been awarded compensation shall not exceed sixty thousand dollars." § 8-48-406(2) (emphasis [404]*404added). Additionally, the 1971 amendment included an effective date, ch. 225, see. 28, 1971 Colo. Sess. Laws 914, while the 2007 amendment did not. With these differences, the relevant statutory language does not constitute "particular language" that has "re-mainled] unchanged." See Vaughan, 945 P.2d at 409; Rauschenberger, 745 P.2d at 643. Eight Thousand West does not constitute a prior judicial interpretation of particular language that has remained unchanged throughout subsequent amendments, and, to the extent it is inconsistent with this opinion, we overrule it.
IIL
Accordingly, we affirm the judgment of the court of appeals.
Justice RICE concurs in part and dissents in part, and Justice COATS and Justice EID join in the concurrence and dissent.