Opinion for the Court filed by Circuit Judge STARR.
STARR, Circuit Judge:
In this appeal, we are called upon to determine whether the District Court properly dismissed two consolidated actions brought by four Department of Labor Administrative Law Judges. The appellants were among a group of ALJs who remained at their GS-15 pay level despite an Office of Personnel Management directive promoting thirty-nine of their colleagues to GS-16. Eighteen months after petitioning OPM to direct their promotion and not having received a definitive response, appellants filed suit in federal district court challenging OPM’s failure to promote them as violative of,
inter alia,
the Classification Act, 5 U.S.C. §§ 5101
et seq.
(1982), the Back Pay Act,
id.
§§ 5596
et seq.
(1982) and their Fifth Amendment right to due process. The District Court dismissed appellants’ statutory claims for lack of subject matter jurisdiction, citing this Court’s decision in
Carducci v. Regan,
714 F.2d 171 (D.C.Cir.1983), and rejected on the merits appellants’ constitutional claims.
I
The relevant facts are not in dispute. The appellants, Melvin Warshaw, Lawrence Gray, Edward Murty, Jr. and Peter Giesey, are presently GS-16 Administrative Law Judges employed by the Department of Labor. However, in August 1981, when OPM directed the promotion of thirty-nine GS-15 AUs at the Department of Labor to GS-16, appellants were not among those promoted.
A
The August 1981 promotions represented the culmination of an effort by OPM to restructure the Department of Labor’s AU corps. Prior to April 1981, AUs at the Department fell into one of three position descriptions: performance of (1) exclusively GS-16 level casework, or (2) exclusively GS-15 level casework, or (3) a combination of the two types of casework. The third category of AUs, referred to by the parties as “dual position” AUs, were compensated at the GS-15 level.
Pursuant to its authority to review agency implementation of classification standards under the Classification Act, OPM reviewed the classification of AU job descriptions at the Department. As a result, in April 1981 OPM reclassified from GS-15 to GS-16 two of the types of cases presided over by “dual position” AUs, namely cases under the Longshoremen’s and Harbor Workmen’s Compensation Act (“Longshoremen’s”) and cases under the Comprehensive Employment and Training Act (“CETA”). This reclassification tipped the balance of GS-15 and GS-16 level cases handled by “dual position” AUs in favor of a GS-16 classification for such judges. OPM, accordingly, examined the overall
workload performed by the Department’s AU corps and determined that, as a result of the reclassification of CETA and Longshoremen’s cases, thirty-six new GS-16 AU positions should be created. Consulting the GS-16 “Register,”
OPM determined that thirty-nine of the fifty-one “dual position” AUs were qualified to fill the new positions and, in consequence, directed their promotions pursuant to 5 C.F.R. § 930.204(b) (1985).
Appellants were not listed on the Register, however, and were therefore not among the thirty-nine AUs promoted in August 1981.
B
Appellants filed an appeal with OPM late in 1981. They asserted that notwithstanding the reclassification of job descriptions and the promotion of thirty-nine “dual position” AUs, the actual work assignment practices at the Department had remained as before. The unhappy result of the confluence of promotions and unaltered work assignments was that both the thirty-nine recently-promoted AUs and those left to languish at the GS-15 level were still functioning as “dual position” AUs. Consequently, appellants argued, the merit system principle of equal pay for equal work was being violated in contravention of both the Classification Act and the Civil Service Reform Act of 1978 (“CSRA”), Pub.L. No. 95-454, 92 Stat. Ill (codified as amended in scattered sections of 5 U.S.C. (1982)). In addition, appellants argued that pursuant to 5 C.F.R. § 930.204(b) (1985),
supra
note 2, all “dual position” AUs should have been promoted to GS-16 as soon as the Longshoremen's and CETA cases were reclassified, inasmuch as these AUs were, at that time, performing principally GS-16 work.
OPM investigated appellants’ complaint and concluded that the Department of Labor had, in fact, failed properly to implement OPM’s reclassification plan. As OPM had envisioned the plan’s operation, a bright line was to be drawn between GS-16 and GS-15 AUs; that is, in OPM’s contemplation, only GS-16 AUs (who comprise 70% of the total AU corps at the Department of Labor) would perform GS-16 work and those AUs would perform only GS-16 work. In contravention of this clear demarcation of GS level and level of responsibility, the Department was assigning GS-16 work to both GS-16 and GS-15 AUs, all of whom would then devote approximately 70% of their time to performing GS-16 work.
C
In response to DOL’s apparent management disarray, OPM froze GS-16 promotions for otherwise qualified GS-15 AUs; moreover, OPM refused to act on individual appeals until the unhappy situation of blended responsibility could be re
solved. Meanwhile, however, appellants repeatedly filed with OPM individual requests for promotion to GS-16. Frustrated in their attempt to speed up resolution of their respective appeals, appellants took leave of the administrative battlefield and repaired to federal district court.
In March 1983, shortly after the District Court actions were instituted, OPM’s Director informed appellants that his agency could not authorize, at that time, additional GS-16 promotions because the 1981 reclassification and promotion scheme remained improperly implemented; it was therefore not possible at that stage, the OPM Director maintained, to determine whether additional GS-16 positions would be available once the plan finally began to operate as intended. The Director further represented that once the management task at hand was completed, appellants’ appeals would again be reviewed.
D
Despite these assurances, appellants continued to pursue their cases in district court. In his complaint, appellant Warshaw sought to compel OPM to direct his promotion outright. Jurisdiction was founded on the Mandamus Act, 28 U.S.C. § 1361 (1982). The gravamen of Mr. Warshaw’s complaint was that, inasmuch as he had “fulfilled the promotional requirements contained in 5 C.F.R. § 930.204(b),” he should be considered “among the eligible GS-15 AUs that DOL ... had previously requested OPM to select for appointment to vacant GS-16 AU positions.” J.A. at 14 (Complaint filed in
Warshaw,
C.A. No. 83-0248).
In
Gray,
three appellants filed a separate complaint seeking damages and injunctive relief in addition to mandamus. Jurisdiction was based,
inter alia,
on the Administrative Procedure Act, 5 U.S.C. §§ 706
et seq.
(1982), the Back Pay Act, 5 U.S.C. § 5596, the Mandamus Act,
supra,
and the Fifth Amendment. The gravamen of the
Gray
appellants’ complaint was that, had OPM applied 5 C.F.R. § 930.204(a) (1982), instead of the newly promulgated § 930.-204(b), OPM would have been required to promote all fifty-one “dual position” AUs.
See supra
note 2. As a result, appellants asserted, they were being denied equal pay for equal work in contravention of both the Classification Act and the CSRA. In their prayer for relief, appellants sought, among other things, an order compelling OPM to direct their promotion, back pay, punitive damages and attorneys’ fees (based on a claim of OPM’s bad faith in refusing to respond to their request for promotion). J.A. at 32-34 (Complaint filed in
Gray,
C.A. No. 83-0354).
The
Warshaw
and
Gray
cases were consolidated and a single order, entered on December 21, 1983, dismissed the cases for lack of subject matter jurisdiction, based upon this court’s supervening decision in
Carducci v. Regan,
714 F.2d 171 (D.C.Cir.1983).
With respect to appellants’ non-constitutional claims, the District Court held that, in light of this court’s holding in
Carducci (i.e.,
that “ ‘the exhaustive remedial scheme of the CSRA would be impermissibly frustrated by permitting far lesser personnel actions not involving constitutional claims[ ] an access to the courts more immediate and direct than the statute provides with regard to major adverse actions,’ ” J.A. at 4-5 (quoting
Carducci, supra,
714 F.2d at 174)), appellants were required to process their claims through the
Office of Special Counsel (“OSC”) and, if appropriate, the Merit Systems Protection Board (“MSPB”), before repairing to federal court.
Specifically, the District Court concluded that appellants’ claims did not rise to the level of “adverse actions” within the meaning of 5 U.S.C. § 7521 (1982);
however, the District Judge observed that their allegations could constitute grounds for a claim of “prohibited personnel practices” under
id.
§ 2302(a)(2)(A)(x) (“significant change in duties or responsibilities which is inconsistent with the employee’s salary or grade level”). The theory supporting this determination, in the District Court’s view, was that the classification “laws and regulations [which were] allegedly violated implement the merit system principles which protect against arbitrary action, and insure fair and equitable treatment including equal pay for equal work.” J.A. at 241-42 (citing 5 U.S.C. § 2301(b) (1982)).
Accordingly, the District Court concluded that, under Carducci’s teaching, appellants were required to exhaust the Office of Special Counsel-MSPB avenue of appeal. The District Court observed in this respect that, because appellants could now repair to the OSC, retroactively applying
Carducci
to their respective situations would not leave appellants without an adequate remedy. In addition, no basis could be found, the District Court stated, for distinguishing appellants from their counterpart in
Carducci.
Moving to another branch of appellants’ attack, the District Court held that the Back Pay Act did not confer federal court jurisdiction under these circumstances, inasmuch as appellants “are entitled to back pay only if they succeed on the merits of their claims.” J.A. at 10 n. 6. Success on the merits could be had, of course, only after recourse to the Congressionally provided avenue of potential relief. With respect to the contention that OPM’s delay and general mishandling of appellants’ claims violated their Fifth Amendment right to due process, the District Court concluded that, even assuming the existence of a cognizable “property” interest, appellants might have more promptly obtained OPM’s decision regarding their appeals had they utilized the proper procedures and repaired to the OSC. Finally, the District Court dismissed a
Bivens
claim
on the authority of the Supreme Court’s decision in
Bush v. Lucas,
462 U.S. 367, 103 S.Ct. 2404, 76 L.Ed.2d 648 (1983). Under that holding, Congress’ crafting of such a comprehensive remedial scheme in the sensitive area of federal civil service personnel relations precluded the judicial creation of a cause of action directly under the Constitution. The District Court concluded that
Bush v. Lucas
fully applied here in light of the fact that the CSRA provides a comprehensive scheme of review “which prohibits arbitrary action and provides procedures by which improper action may be redressed.” Order at 11, J.A. at 246.
II
On appeal, appellants argue that the District Court erred on several grounds in dismissing their claims for lack of subject
matter jurisdiction. First, appellants contend that
Carducci
does not apply at all to suits brought by AUs pursuant to the Administrative Procedure Act; in their view, the institutional need of AUs for decisional independence mandates a greater degree of protection than that afforded by the CSRA. AUs are, appellants contend, sufficiently distinct from all other civil service employees that the CSRA’s elaborate provisions, as elucidated by
Carducci,
should not preclude a direct federal court action under the APA. As a fallback position, appellants urge this court to reconsider
Carducci,
arguing that the decision is inconsistent with prior decisions of this court as well as a recent First Circuit decision. If
Carducci
must live, appellants argue next, it should nevertheless not be applied retroactively to bar their claims, which arose pr
e-Carducci
and were brought into federal district court before that decision was handed down. Furthermore, in appellants’ view, statutory grounds exist independent of the CSRA for retaining jurisdiction and that, in consequence, the District Court improperly dismissed their claims. Finally, appellants attack the District Court’s determination that their due process claim lacked merit.
Two grounds, in appellants’ view, support their contention that AUs should be treated differently from other civil service employees for purposes of obtaining judicial review. First, appellants maintain that under this court’s decisions in
Friedman v. Devine,
711 F.2d 420 (D.C.Cir.1983) and
Etelson v. OPM,
684 F.2d 918 (D.C.Cir.1982), as well as the First Circuit’s decision in
Dugan v. Ramsay,
727 F.2d 192 (1st Cir.1984), review under the Administrative Procedure Act remains available to AUs despite the passage of the CSRA. In addition, appellants rely upon the myriad of statutory provisions, some of which are found in the CSRA, which single out AUs for special treatment in one form or another.
In
Friedman,
an applicant for an AU position challenged OPM’s failure to credit toward his seven-year, litigation-experience requirement time spent in an agency’s “Advice Division.” Granting OPM’s motion for summary judgment, the District Court based its jurisdiction on the APA with no discussion whatever of the CSRA. 565 F.Supp. 200 (D.D.C.1982)
aff'd mem.,
711 F.2d 420 (D.C.Cir.1982).
Likewise in
Etelson, supra,
plaintiff challenged OPM’s method of evaluating candidates for AU positions. In our opinion in
Etelson,
this court held that OPM’s method of evaluating the litigation experience of government attorneys on the basis of grade level, while evaluating private attorneys on the basis of actual litigation experience, was arbitrary and capricious within the meaning of the APA. The court, like the District Court in
Friedman,
did not discuss the CSRA; that omission, however, is hardly surprising inasmuch as the claim in Etelson’s case arose in 1970, nearly nine years before the CSRA’s effective date. Review under the CSRA would therefore not have been appropriate in
Etelson,
inasmuch as the plaintiff’s claim was pending prior to that statute’s effective date.
See
5 U.S.C. § 7703(b)(1) (1982);
see also
5 C.F.R. § 1201.191(b) (1985);
Kyle v. ICC,
609 F.2d 540 (D.C.Cir.1980) (interpreting both the statute and the regulation).
In contrast to the silence of the District Court in
Friedman
and this court in
Etelson,
an authoritative interpretation of the CSRA’s impact on preexisting avenues of judicial review was subsequently rendered in
Carducci v. Regan, supra,
714 F.2d 171. In
Carducci,
this court examined in detail the remedies available to civil service employees under the CSRA. Examining this court’s decisions in
Borrell v. United States Int’l Communications Agency,
682 F.2d 981 (D.C.Cir.1982), and
Cutts v. Fowler,
692 F.2d 138 (D.C.Cir.1982), the court
first separated constitutional claims from nonconstitutional ones. With respect to the latter category, the court held that under the regime ushered in by the CSRA, such complaints were reviewable (1) directly by the MSPB (“adverse actions”); or (2) reviewable first by the Office of Special Counsel (“prohibited personnel practices”), which could take several kinds of action including prosecuting the case before the MSPB; or (3) in rare instances, not at all (committed to agency discretion). With respect to the constitutional claims advanced in that case, the court found them inadequately briefed and therefore declined to resolve them. 714 F.2d at 177.
Appellants’ argument based on
Friedman
and
Etelson
fails for the simple reason that neither case provides true circuit precedent on the question of the CSRA’s impact on the availability of judicial review. Indeed, there was no opinion at all by this court in
Friedman, see supra
note 7;
Etelson
did not, as we discussed previously, purport to examine the CSRA inasmuch as the claim was pending prior to the effective date of that Act. Finally, both cases predate
Carducci,
which comprehensively addressed the CSRA’s scheme for judicial review of non-constitutional claims arising out of agency actions taken against federal employees.
Inasmuch as
Carducci
represents controlling precedent in this circuit, appellants make several attempts to challenge or avoid its holding. First, appellants argue that
Carducci
is wrong and should be reconsidered. As evidence of the “error” in
Carducci,
appellants rely upon not only its alleged break with the
Friedman
and
Etelson
“precedents,” but its inconsistency with the First Circuit’s
post-Carducci
decision in
Dugan v. Ramsay, supra,
727 F.2d 192. In
Dugan,
the First Circuit held that despite passage of the CSRA, APA review remained available to an applicant for an AU position, a conclusion clearly contrary to
Carducci.
Appellants would have us follow
Dugan.
This, of course, we cannot do.
Carducci
is binding precedent which can be overruled only by the court
en banc.
Appellants next attempt to cabin
Carducci
's scope. In this respect, appellants contend that
Carducci
can be distinguished from
Friedman, Etelson
and
Dugan
on the obvious ground that the civil service employee in
Carducci
was not an AU. Renewing their argument that AUs are distinct, appellants emphasize that AUs’ need for decisional independence dictates a higher degree of protection from coercion. Appellants assert that unless judicial review is available a “wrong thinking” AU could be punished and left with no effective means to counteract the coercive effect of personnel policies implemented for this illicit purpose. Appellants’ Brief at 23. Appellants seek to buttress their argument by pointing out that
Friedman, Etelson
and
Dugan
all involved AU positions while
Carducci
did not; the difference in outcome in these cases, they contend, can be explained by the fact that AUs are generally treated differently from civil servants who do not carry on adjudicatory functions. Moreover, appellants cite numerous statutory provisions in which AUs are singled out for special treatment.
While recognizing the pivotal importance of the work of the AU corps, we are nonetheless unpersuaded by appellants’ attempt to confer special status on AUs beyond that expressly provided by Congress. It is, to be sure, true that Congress has often recognized the special status of AUs. Appellants understandably go into some detail identifying numerous provisions in which Congress has singled out AUs for special treatment.
See
Appellants’ Brief at 23-27. However, as the District Court rightly observed, Congress, in outlining the elaborate procedures for review of adverse agency actions in the CSRA, expressly imposed a requirement on the MSPB that it make a determination of good cause (after an opportunity for hearing) before the challenged “adverse action” is taken by an agency against an AU.
See
Order at 9, J.A. at 244; 5 U.S.C. § 7521
(1982). Tellingly, however, no special provision for AUs was set forth by Congress with respect to review of “prohibited personnel practices.”
Clearly, had Congress intended to treat AUs differently as to “prohibited personnel practices,” it could have done so explicitly just as it did with respect to “adverse actions.” We can not and will not, to achieve what is plainly a laudable policy goal sought by appellants, add a statutory provision which the First Branch did not include.
Finding appellants’ effort to limit Carducci’s reach unavailing, we turn to consider their argument that even if
Carducci
could be applied to AUs as a group, it should not apply here because appellants’ claims were pending before the District Court prior to the date
Carducci
was handed down. Appellants concede that retroactive application of judicial decisions is the general rule but argue that retrospective applicability is not warranted in this case.
In
Chevron Oil Co. v. Huson,
404 U.S. 97, 92 S.Ct. 349, 30 L.Ed.2d 296 (1971), the Supreme Court identified three factors as relevant to the question of nonretroactivity
vel non:
First, the decision to be applied nonretroactively must establish a new principle of law, either by overruling clear past precedent on which litigants may have relied, or by deciding an issue of first impression whose resolution was not clearly foreshadowed. Second, it has been stressed that “we must ... weigh the merits and demerits in each case by looking to the prior history of the rule in question, its purpose and effect, and whether retrospective operation will further or retard its operation.” Finally, we have weighed the inequity imposed by retroactive application, for “[wjhere a decision of this Court could produce substantial inequitable results if applied retroactively, there is ample basis in our cases for avoiding the ‘injustice or hardship’ by a holding of nonretroactivity.”
404 U.S. at 106-07, 92 S.Ct. at 355 (citations omitted). Nothing in
Huson
mandates that all three factors be satisfied in order to decide the issue in favor of nonretroactivity; on the contrary, it appears that the Court contemplated the carrying out of a balancing process to make this determination.
Arguing from Huson’s teaching, appellants contend that retroactive application is not mandated because (1)
Carducci
broke with precedent and established a new principle of law; (2) no purpose would be served by requiring appellants to pursue alternative remedies; and (3) a substantial inequitable result would be occasioned if OPM were allowed to profit from its own delay at great expense to appellants. Specifically, appellants claim that
Carducci
established a new principle of law when, for the first time, it precluded judicial review under the APA of agency actions taken against AUs.
Upon analysis, however, we can find no “clear past precedent” having been overruled by
Carducci;
moreover, while the precise issue presented in
Carducci
was one of the first impression, its eventual resolution had been foreshadowed by the enactment of the CSRA itself and even more clearly by two post-CSRA decisions of this court.
Thus,
Carducci
does not represent the sort of dramatic reversal of past practice which was presented to the Court in
Huson,
where a party suddenly found
subject to a shorter statute of limitations.
The second
Huson
factor, whether retroactive operation would further or retard the newly adopted principle, does not favor appellants. The rationale articulated in
Carducci
is, as we have seen, that “the scheme of the CSRA would be impermissibly frustrated by permitting, for lesser personnel actions not involving constitutional claims, an access to the courts more immediate and direct than the statute provides with regard to major adverse actions.” 714 F.2d at 174;
see supra
page 1507. That principle would be retarded, not furthered, were appellants’ claim permitted to proceed in court notwithstanding the ready availability of the elaborate administrative apparatus fashioned by Congress in the CSRA.
Least of all can appellants satisfy
Huson
’s third factor, namely that substantial inequity will result if
Carducci
is retroactively applied.
Unlike cases such as
Huson,
involving statutes of limitations, see Appellants’ Brief at 38, appellants’ cause of action will not be lost by our faithfully following Carducci’s teaching. Appellants are being required to comport themselves with Congressionally provided procedures for obtaining relief by presenting a cognizable claim to the Office of Special Counsel; they are by no means being left remediless.
C
In addition to their APA claims, appellants advance a constitutional claim in support of their challenge. Specifically, appellants contend that the glacial manner in which OPM processed their claims worked a violation of appellants’ due process rights in contravention of the Fifth Amendment. The court in
Carducci
was likewise faced with a constitutionally-based claim but declined to address the contention based upon the barebones assertion of a constitutional right with virtually no elaboration or development of the contention so as to permit careful judicial evaluation of the claim.
Here too, the District Court was faced with a barebones assertion of a Fifth Amendment claim with little elaboration. In fairness to appellants, however, they finally articulated their Fifth Amendment claim more clearly on appeal, arguing in their Reply Brief that OPM’s intransigence and delay in processing their complaint violated appellants’ due process rights. This is, of course, terribly late in the litigation day, sufficiently so as to warrant our declining, for the reasons aptly stated by
Carducci,
to address their claims. But in any event we find this eleventh-hour elucidation of an asserted constitutional claim to be of no avail; the constitutional challenge is moot to the extent appellants’ claim was grounded upon a request for injunctive relief from OPM’s delay in rendering a decision. That delay has, of course, ended.
D
As a final attempt to preserve federal court jurisdiction, appellants assert that the District Court had jurisdiction (1) under the Mandamus Act, 28 U.S.C. § 1361 (1982), due to the presence of a claim that OPM was refusing to perform its statutory duty to render a decision; and (2) under amendments to the Back Pay Act, 5 U.S.C. § 5596(b)(3) (1982), due to the presence of a claim for entitlement to back pay for the period appellants allege they were wrongfully paid at the GS-15 level.
Although the District Court did not separately address the back-pay and mandamus claims, we conclude that neither claim provides a basis for jurisdiction. The mandamus claim is clearly moot. It is manifestly unnecessary to compel OPM to act on appellants’ claim, inasmuch as OPM rendered its decision nearly two years ago. As if more were needed, for mandamus to lie appellants must not have an adequate alternative remedy; yet, as we have discussed at length, appeal to the OSC has been and remains open to appellants, and they have failed to demonstrate the inadequacy of this avenue of appeal.
See supra
note 12;
Barnhart v. OPM,
771 F.2d 1515 (D.C.Cir.1985).
The back-pay claim likewise must fail because the Back Pay Act provides that an employee cannot obtain back pay unless the employee is first “found by appropriate authority ... to have been affected by an unjustified or unwarranted personnel action.” 5 U.S.C. § 5596(b)(1) (1982). That is an issue yet to be determined, as we have seen; thus, any Back Pay Act claim is, at this juncture, premature.
In addition, it is not entirely clear that appellants could succeed on the merits of their back-pay claim. The Back Pay Act requires a
withdrawal
or
reduction
in pay for a cause of action to lie.
See United States v. Testan,
424 U.S. 392, 405-07, 96 S.Ct. 948, 956-57, 47 L.Ed.2d 114 (1976). It is not immediately apparent that any reduction or withdrawal, in the traditional sense, has occurred here; appellants seek compensation from OPM and the Department of Labor for allegedly wrongfully failing to promote appellants, rather than for actually lowering appellants’ GS-level and thereby decreasing their salary and benefits. Appellants argue that a 1978 amendment to the Back Pay Act (adopted as part of the CSRA) modifying the definition of “personnel action” so as to include within that term an “omission or failure to take an action or confer a benefit,” 5 U.S.C. § 5596(b)(3) (1982), provides “a remedy for persons in appellants’ position.” Appellants Reply Brief at 12. We observe that at least one court has decided the issue contrary to the resolution appellants urge upon us.
See Spagnola v. Stockman,
No. 82-3584, slip op. (D.D.C. May 19, 1983). We need not, however, resolve this issue in order to dispose of appellants’ back-pay claim, and we therefore express no opinion as to either the impact of the 1978 amendments to the Back Pay Act or the applicability of
Spagnola
to the facts of this case. It is sufficient for our purposes that appellants have not yet been found by an appropriate authority to have been wrongfully denied promotion.
III
Due to the potential availability of relief from the Office of Special Counsel and by virtue of this court’s decision in
Carducci,
we agree with the District Court that it lacked subject matter jurisdiction over most of these claims. In addition, we agree with the District Court that appellants’ constitutional claim is moot (or premature) and that the claim for back pay is, at best, premature.
For the foregoing reasons, the judgment of the District Court is
Affirmed.