In this certified appeal 1 we are asked to decide whether the District of Columbia Workers’ Compensation Act of 1979, D.C. Code § 36-301 et seq. (1988 Repl.) (the 1979 Act), covers a worker’s injury or disease if the employment events giving rise to the injury occurred before the 1979 Act took effect, but the worker did not become aware of the injury and its job-relatedness until after that time. We hold that the 1979 Act applies unless there is no subject matter jurisdiction of a claim under that Act or other state law, in which event, to avoid depriving an injured worker of any workers’ compensation coverage, the Long-shore and Harbor Workers’ Compensation Act, 33 U.S.C. §§ 901-50 (1982) (LHWCA), as extended by Congress to District of Columbia private sector workers in 1928, D.C. Code § 36-501 et seq. (1973) (the 1928 Act), will apply.
I
The relevant facts are not in dispute. 2 Respondent Robert Gardner worked for nine years as a construction worker on the Washington Metropolitan Area Transit Authority’s subway project. His last employer was Railco Multi-Construction Company (Railco), a District of Columbia employer for whom he worked from September 1981 until September 15, 1982, when the project was completed. Until June 1982 he worked for Railco at the L’Enfant Plaza station in the District of Columbia. Thereafter, from June to September 1982, he worked in Virginia.
In January 1983 Gardner filed a claim for worker compensation benefits under the 1928 Act. He alleged that as a result of his exposure to noisy machinery while employed by Railco in the District of Columbia and in Virginia, he had suffered a hearing loss.
3
An administrative law judge found that Gardner first became aware of his hearing loss on September 16, 1982. Acknowledging that the District’s new workers’ compensation act, the 1979 Act, had taken effect,
4
the administrative law judge ruled that Gardner’s injury was covered by the 1928 Act because “[ajlmost all of this injury really occurred prior to" the
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effective date of the District’s Act.
5
Petitioners Raileo and its insurance carrier, Lumbermens Mutual Casualty Company,
6
appealed to the Benefits Review Board (the Board), which affirmed the decision of the administrative law judge on different grounds, relying in part on the 1984 amendments to the LHWCA.
Gardner v. Railco Multi-Construction Co.,
18 BRBS 264 (1986)
(Gardner I).
On remand from the United States Court of Appeals for the District of Columbia Circuit for reconsideration in light of
Keener v. Washington Metro. Area Transit Auth., supra,
II
Before us is a question of law regarding legislative intent and we apply the usual standard of review.
See Thomas v. District of Columbia Dep
't
of Employment Servs.,
The United States Court of Appeals posed the issue of how to define the relevant “date of injury” in long-latency occupational diseases for purposes of determining whether the 1979 or the 1928 Act provides coverage, and identified it as a question of local and not federal law. Unlike an accidental injury, in which the trauma effects are felt almost immediately, it is unclear in long-latency diseases whether the injury occurs when the employee is exposed to the employment event (time of last exposure theory) or when the disease actually manifests itself (the date of man
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ifestation theory).
See generally Castorina v. Lykes Bros. S.S., supra,
Railco contends that the express and complete repeal of the 1928 Act precludes its application to an occupational disease arising thereafter, regardless of when exposure occurred, and that the 1979 Act suffices to provide coverage for Gardner so long as the injury is manifested after the effective date of the 1979 Act; the matter of where Gardner worked while covered by the 1979 Act, Railco claims, is a compensation issue which should not determine whether the 1979 or 1928 Act applies. Ra-ilco also asserts that the general savings clause does not provide Gardner coverage under the 1928 Act because Gardner’s exposure alone did not give rise to a proper claim.
Respondents Gardner and the Office of Workers’ Compensation Programs of the United States Department of Labor (OWCP) contend that the relevant employment events determine coverage, and that here substantially all the employment events occurred prior to the 1979 Act, giving rise to coverage under the 1928 Act. They point out that Gardner, who worked in Virginia from June to September 1982, may be without coverage under the 1979 Act because of its geographic limitations on coverage, see D.C.Code § 36-303(a) (1988 Repl.), and contend that even if Gardner’s rights under the 1928 Act were inchoate as of the effective date of the 1979 Act, Railco’s liability arose, and must be recognized, under the 1928 Act, particularly where the claimant may be provided no substitute coverage by the 1979 Act. 9 Respondents also refer to a regulation promulgated by the Secretary of Labor providing that the 1928 Act “applies to all claims for injuries or deaths based on employment events that occurred prior to [the effective date of the 1979 Act],” 51 Fed.Reg. 4281, 20 C.F.R. § 701.101(b) (1987), which they claim reflects “the fundamental nature and operation of the LHWCA and the 1928 Act.” 10
A.
In 1928 Congress extended the provisions of the LHWCA to District of Columbia private sector employees and provided that the local act would be administered by the United States Department of Labor with review of departmental administrative decisions by the United States Court of Appeals for the District of Columbia Circuit. D.C.Code §§ 36-501, -502 (1973);
see District of Columbia v. Greater Washington Cent. Labor Council,
The 1979 Act repealed the 1928 Act.
15
However, under the general savings statute of the United States Code, the 1928 Act continues in effect as it existed in 1982, the effective date of the repeal of the 1928 Act, and without regard to subsequent amendments to the federal LHWCA, for the purpose of “sustaining any proper action or prosecution for the enforcement of [any] penalty, forfeiture or liability ... incurred under such statute.” 1 U.S.C. § 109 (1982);
16
see Keener, supra,
B.
The 1979 Act provides, in relevant part, that “[t]his chapter shall apply in respect to the injury or death of an employee of an employer.... provided that at the time of such injury or death this employment is principally localized in the District of Co-lumbia_” D.C.Code § 36-303(a) (1988 Repl.). The definition of injury, in pertinent part, is an:
accidental injury or death arising out of and in the course of employment, and such occupational disease or infection as arises naturally out of such employment or as naturally or unavoidably results from such accidental injury....
D.C.Code § 36-301(12) (1988 Repl.). The 1979 Act provides that liability for compensation for any generally recognized occupational disease “rests with the employer of last known exposure,” D.C.Code § 36-310 *1172 (1988 Repl), and adopts a “discovery rule” for the time of filing a claim for compensation, stating that such time does not begin to run “until the employee or beneficiary is aware, or by the exercise of reasonable diligence should have been aware, of the relationship between the injury or death and the employment.” D.C.Code § 36-314(a) (1988 Repl.).
Although neither these nor any other provision of the 1979 Act specifies when the “time of injury” occurs where an employee does not become aware of an occupational disease until long after the injurious exposure, and the legislative history does not refer to a decision by the D.C. Council to adopt the manifestation rule, we conclude that adoption of this rule is most consistent with the intent of the D.C. Council.
17
In defining the time of the discovery of the injury under D.C.Code § 36-314(a) as the relevant point for determining when an employee has a claim for compensation, the D.C. Council did not change the language that was in the 1928 Act, as amended in 1972. The 1979 Act is modelled on the LHWCA in other respects as well,
see Grillo, supra,
Under the LHWCA the courts held that the time of injury for purposes of determining the date when the statute of limitations begins to run is the time of manifestation of a disease or injury.
Sun Shipbuilding & Dry Dock Co. v. Bowman,
Recently, a federal court adopted the manifestation rule for choosing between two versions of the LHWCA. In
Castori-
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na v. Lykes Bros. Steamship, supra,
The trend toward applying the manifestation rule in a number of contexts, including coverage, is also evident in state workers’ compensation decisions. Professor Larson reports:
In contrast with accidental injury cases, in which there are usually two or more distinct “injuries,” occupational disease cases typically involve long periods of exposure during which the disease is latent or even asymptomatic. In the search for an identifiable instant in time which can be used to determine when the “injury” occurred for purposes of determining which year’s statute to apply, and who is the last employer for purposes of the last injurious exposure rule, the date of disability [i.e. the date of manifestation] is frequently chosen.
4 LARSON’S WORKMEN’S COMPENSATION LAW § 95.25(a), at 17-149-50 and cases cited therein. 20
C,
Adoption of the manifestation rule, which means that the 1979 Act would apply in long-latency cases, could work unintend *1174 ed hardships as the result of substantive changes made in the 1979 Act regarding coverage. This appears to be the concern underlying the U.S. Department of Labor’s position in support of application of the 1928 Act. Indeed, it is how we view the Secretary’s promulgation of a regulation to assure coverage in light of uncertainties under the 1979 Act and its regulations and. indications of the administrative interpretation of the 1979 Act. 21
Under the 1979 Act, if “at the time of the injury the employment was [not] principally located in the District,” D.C.Code § 36-303, there is no subject matter jurisdiction, and such claimants would be without any workers’ compensation coverage under District of Columbia law. 22 Most jurisdictions adopting the manifestation rule do so to give occupational disease claimants the benefit of expanded coverage or benefits under the amended statute, the courts viewing the amendments as fulfilling the purpose of assuring compensation for disabled workers. 23 The statutory trend in the District of Columbia has been the reverse, however, starting with broad coverage and generous benefits levels under the 1928 Act and moving to narrower coverage and lower benefits under the 1979 Act.
The coverage concern of the D.C. Council undoubtedly arose from the broad interpretation by the courts of coverage under the LHWCA.
24
Given the Council’s express statement that its amendments would not prove inequitable for injured workers,
25
we conclude, that in narrowing subject matter jurisdiction under the 1979 Act to employment "principally localized” in the District of Columbia, the Council fairly assumed that an injured worker who did not meet that requirement would be “principally localized” elsewhere where coverage would be available.
26
There is nothing to suggest that the Council intended such workers to resort to tort remedies if they were not
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covered by the 1979 Act,
27
or that the Council intended to change the fundamental nature of the District’s workers’ compensation scheme assuring compensation for disability in an efficient and economical matter.
See Meiggs, supra,
In addition, the principles of retroactivity dictate against applying a statute where doing so would be “manifestly unjust.”
Hastings v. Earth Satellite Corp.,
D.
Accordingly, we hold that the 1979 Act applies to Gardner’s claim unless he is deprived of coverage under that statute, and under any other state statute, in which event the 1928 Act will apply. The 1979 Act applies because his disease did not manifest itself until after the 1979 Act became effective and the employer of last exposure, Railco, was his employer at the time of the last exposure and at the time the disease became manifest. Our holding is consistent with the intent of the D.C. Council to replace the 1928 Act with an economically competitive workers’ compensation scheme in the 1979 Act and with the rule against retroactive application of statutes affecting substantive rights. Affording coverage under the 1928 Act where the employer is the same at the time of the injurious exposure as well as at the time of manifestation after the effective date of the 1979 Act also is consistent with such indications as there are that the Council did not intend for an injured employee to be without workers' compensation coverage as a result of the enactment of the 1979 Act.
Thus, an occupational injury claimant who meets both the temporal and geographic jurisdictional requirements of the 1979 Act will be covered by the 1979 Act, and, like accidental injury victims covered by the 1979 Act, subject to the benefit levels of the 1979 Act. This is not a retroactive application of the new statute since only the claimant’s remedy is affected. A worker whose claim is covered by the 1979 Act cannot seek compensation under the more generous 1928 Act just because some of the claimant’s exposure occurred prior to the effective date of the 1979 Act.
Pursuant to our holding, we anticipate that most long-latency cases will be adjudicated under the 1979 Act, which accords with the D.C. Council’s intent to “divorce[ ] the local workers’ compensation system entirely from the [LHWCA].”
O’Connell, supra,
Notes
. On May 3, 1988, the United States Court of Appeals for the District of Columbia Circuit certified this question of law to this court pursuant to D.C.Code § 11-723 (1988 Supp.).
.
See Penn Mut. Life Ins. Co. v. Abramson,
. All the parties agree that Gardner’s hearing loss is an occupational disease.
See Travelers Ins. Co. v. Cardillo,
. In its certification, the United States Court of Appeals for the District of Columbia Circuit noted some confusion over when the 1979 Act became effective. As the United States Court of Appeals observed, the issue is not material to this appeal. July 26, 1982, is the date used in the regulations adopted under the Act.
See
Code of D.C.Reg. § 3602.1, 29 D.C.Reg. 5540 (1982).
See also Keener v. Washington Metro. Area Transit Auth.,
. The finding was that Gardner's hearing loss actually occurred continually over a period of nine years, ending September 16, 1982.
. For ease of reference we refer to petitioners, who filed a joint brief, as Raileo.
. In view of Keener, supra, holding that the 1984 amendments to the LHWCA did not apply to the 1928 Act in effect for District of Columbia workers pursuant to the federal savings clause, the Board found, however, that Gardner had failed to file a timely claim under the unamended 1928 Act. Gardner II, supra, 19 BRBS 242. Gardner was still entitled to receive medical expenses and attorney’s fees, the provisions for which differ in the 1928 Act, compare 33 U.S.C. §§ 903, 928 (1982), with D.C.Code §§ 36-307, -330 (1988 Repl.). Thus, the determination of which workers' compensation statute covers Gardner's injury affects the level of his recovery even though disability compensation is no longer available to him.
.The certification stated that this court, for example, could decide that the 1928 Act should cover an employee whose injury was contracted before but manifested after the 1979 Act took effect, if after that time, but before manifestation, the employee had either stopped working or shifted to employment for which no remedy was available under the 1979 Act, if, for instance, subject matter jurisdiction was lacking, and no other workers' compensation remedy was available. The certification memorandum noted that in Gardner's case it is unclear whether another remedy is available under a law other than the 1928 and 1979 Acts. Another alternative mentioned in the certification was that this court could decide that the 1928 Act covers an employee whose work for the same employer straddled the time period before and after the 1979 Act’s effective date, but whose disease did not manifest itself until after that date, either if the 1979 Act failed to provide a remedy, or if neither that Act nor any other workers’ compensation law supplied one.
. See D.C.Code § 36-303(a) (1988 Repl.). The U.S. Department of Labor refers us to hundreds of similar cases pending in its office involving claimants whose exposure and manifestation of injury span the coverage dates of the 1928 and 1979 Acts.
. The Board relied on the regulation in finding coverage under the 1928 Act. See Gardner /, supra, 18 BRBS 268.
. Pub.L. 93-198, 87 Stat. 774, 1 D.C.Code 201 et seq. (1987 Repl.).
. The 1928 Act extended compensation coverage to an employee of an employer "carrying on any employment in the District of Columbia" without regard to where the employee worked or was injured.
See
D.C.Code § 36-501 (1973). The Supreme Court construed the LHWCA as giving the widest extraterritorial application coverage possible consistent with the Due Process Clause of the Constitution.
See Cardillo v. Liberty Mut. Ins. Co.,
.
See Grillo v. Nat'l Bank of Washington,
.
See
D.C.Code §§ 36-302(a), -320, -322;
O’Connell, supra,
. Section 46 of the 1979 Act repealed the 1928 Act. This section is not codified, but was published as part of the 1979 Act in the District of Columbia Register at 27 D.C.Reg. 2541 (1980).
. 1 U.S.Code § 109 (1982) provides:
The repeal of any statute shall not have the effect to release or extinguish any penalty, forfeiture, or liability incurred under such statute, unless the repealing Act shall so expressly provide, and such statute shall be treated as still remaining in force for the purpose of sustaining any proper action or prosecution for the enforcement of such penalty, forfeiture, or liability.
. There is nothing to suggest that the D.C. Council intended to afford an injured worker the option of discretionarily seeking compensation under either the 1928 or the 1979 Act. Congress, by permitting the 1979 Act to become effective, has, in effect, enacted the 1979 Act as a replacement for the 1928 Act for most purposes.
See
D.C.Code § 1-206, -207 (1987 Repl.).
Cf. Harmon v. Baltimore & Ohio Railroad,
. The court in Todd Shipyards noted that the Board had applied the manifestation rule for determining compensation levels until its 1981 decision in Dunn v. Todd Shipyards Corp., 13 BRBS 647 (1981), which in the view of the Ninth Circuit was "ill considered and contrary to the express purposes of the LHWCA,’’ since the exposure rule it adopted presented the difficult task of determining the exact date on which harmful exposure occurred, coverage is not dependent on manifestation during employment but rather when the worker becomes aware of the injury, the statute can be construed to cover retired employees, and there is no reason to place the burden of inadequate insurance based on lower levels of compensation on the employee. Id. at 1289, 1291-92.
. The 1984 amendments to the LHWCA, Pub.L. No. 98-426, 98 Stat. 1639 (1984), codified the manifestation rule for determining time of injury.
See
33 U.S.C.A. § 901 (1986) [historical note]. Section 28(g), Pub.L. 98-426. These amendments cannot be read into the 1928 Act.
See Keener, supra,
.
See, e.g., Mergenthaler v. Asbestos Corp. of America,
A case holding to the contrary,
Johnson v. State Accident Ins. Fund Corp.,
Both Virginia and Maryland have adopted the manifestation rule for determining the time of injury in occupational disease cases.
See
Virginia Code Ann. title § 65.1-49 (1987 Repl.) ("first communication of the diagnosis of an occupational disease ... shall be treated as the happening of an injury’’); Md.Code Ann. art. 101 § 67(15) (1979 & 1985 Repl.) (“Disablement ... means the event of an employee’s becoming actually incapacitated, either partly or totally, because of an occupational disease”).
See also Lucky Stores, Inc. v. Street,
. The regulations promulgated under the 1979 Act provide that the 1979 Act would apply only to "injuries which occur” on or after the effective date of the 1979 Act. See 29 D.C.Reg. 5540 (1982). See also Franklin v. Blake Realty Co., et al., H & AS No. 84-26 (August 18, 1985) (DOES adopts manifestation rule, not for occupational diseases, but for a "cumulative traumatic injury,” in the context of choosing between two insurers); Abebe v. Suburban Restaurants, H & AS No. 84-80 (July 21, 1985) (DOES declined to reach the issue because the record indicated that the disease manifested itself in 1983); Jones v. PEPCO, H & AS No. 83-183 (October 23, 1984) (DOES declined to reach the issue because the claimant could hot recover under the Í979 Act under either rule: his exposure occurred prior to 1982, and after 1982, when his injury manifested itself, his employment was not principally located in the District).
. It is not entirely clear whether there is subject matter jurisdiction of Gardner’s claim under the 1979 Act. DOES has formulated a three-part test for construing the term "principally located:’’
1) The place(s) of the employer’s business office(s) or facility(ies) at which or from which the employee performs the principal serviced) for which he was hired; or
2) If there is no such office or facility at which the employee works, the employee’s residence, the place where the contract is made and the place of performance; or
3) If neither (1) nor (2) is applicable, the employee’s base of operations.
See Hughes, supra,
. See note [20], supra.
. See note [12], supra. See also Legislative History, supra note [13], Rpt. of H & CD Cte, at 13 (coverage under the Act is limited to where there is a "legitimate relationship” between the employment of the injured worker and the District of Columbia).
.
See
Legislative History,
supra
note [13], Rpt. of PS & CA Cte at 5 (new bill “does not include changes in the law which will result in a loss of benefits or inequities to workers”). We note, too, that the Council postponed the effective date of the 1979 Act until this court had upheld the authority of the D.C. Council to enact it.
See O'Connell, supra,
. See Larson’s Workmen's Compensation, supra, § 5.30, at 39 (all states have adopted workers' compensation acts).
. The legislative history of the 1979 Act refers to the Council’s intent that compensation under that Act be in lieu of judicial action. See Legislative History,
supra
note [13], Rpt. of H & CD Cte, at 14;
see also Grillo, supra,
.
See, e.g., Hastings, supra,
. Relevant here are the rules that (1) where the last exposure occurs before but not after the effective date of a new law and the injury already allegedly caused by the exposure was not manifest until after, if the employment relationship remains in tact after the effective date of /the new law, the new law applies, and (2) where /the last exposure occurs before but not after the / effective date of the amendment and the injury allegedly caused by the exposure was not manifest until after, if the employment relationship cases before the amendment takes effect, the amendment does not apply.
Hall v. Synalloy Corp.,
.
O’Connell, supra,
