Richard Lubow v. Department of State , 783 F.3d 877 ( 2015 )


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  •  United States Court of Appeals
    FOR THE DISTRICT OF COLUMBIA CIRCUIT
    Argued September 12, 2014             Decided April 17, 2015
    No. 13-5057
    RICHARD E. LUBOW, ET AL.,
    APPELLANTS
    v.
    UNITED STATES DEPARTMENT OF STATE, ET AL.,
    APPELLEES
    Appeal from the United States District Court
    for the District of Columbia
    (No. 1:10-cv-00510)
    Elliot H. Scherker argued the cause for appellants. With
    him on the briefs were Brigid F. Cech Samole, Rachel A.
    Canfield, and Joe R. Reeder.
    Alan Burch, Assistant U.S. Attorney, argued the cause for
    appellees. With him on the brief were Ronald C. Machen Jr.,
    U.S. Attorney, and R. Craig Lawrence, Assistant U.S.
    Attorney. Mercedeh Momeni, Assistant U.S. Attorney,
    entered an appearance.
    Before: GARLAND, Chief Judge, SRINIVASAN, Circuit
    Judge, and SENTELLE, Senior Circuit Judge.
    Opinion for the Court filed by Circuit Judge SRINIVASAN.
    2
    Concurring opinion filed by Senior Circuit Judge
    SENTELLE.
    SRINIVASAN, Circuit Judge: A statute limits the amount
    of “premium pay,” including overtime pay, federal
    government employees may earn each year. A group of State
    Department employees challenges the Department’s decision
    requiring them to repay excess overtime pay they received for
    work on assignment in Iraq in 2004. We conclude that the
    Department permissibly construed the statute capping
    premium pay when determining that the employees’ overtime
    pay exceeded the statutory limit. We also find that the
    Department did not act arbitrarily in denying the employees a
    discretionary waiver of their obligation to repay the excess
    compensation.
    I.
    At the time of the events in this case, the five
    plaintiffs—Frank Benevento, David Bennett, Joseph Bopp,
    James Landis, and Richard Lubow—worked in the State
    Department as Diplomatic Security Special Agents. In late
    2003 or early 2004, each of them responded to a call for
    volunteers to serve one-year assignments in Iraq under the
    Coalition Provisional Authority. They arrived in Iraq in
    February 2004.
    Initially, the plaintiffs were assigned to Iraq on temporary
    duty status; their permanent duty station was in Washington,
    D.C.      Consequently, the plaintiffs received “locality
    pay”—pay in addition to base salary intended to equalize
    federal employees’ compensation with that of non-federal
    workers in the same geographic area—as if they were working
    in Washington, D.C. See 5 U.S.C. §§ 5301, 5304. In June or
    July of 2004, the plaintiffs’ permanent duty station changed
    from Washington, D.C., to the United States Embassy in
    3
    Baghdad. Because the plaintiffs were now stationed in a
    foreign location, they no longer received locality pay. See 5
    C.F.R. § 531.603.
    While in Iraq, the plaintiffs worked, and received
    compensation for, a significant number of overtime hours. In
    early 2005, the plaintiffs completed their assignments in Iraq
    and returned to the United States.
    A.
    Federal law limits the amount of “premium pay” a federal
    employee may receive. See 5 U.S.C. § 5547. Premium pay
    (as opposed to “basic pay”) includes types of remuneration
    such as overtime pay, holiday pay, Sunday pay, night pay
    differential, and availability pay. See 
    id. § 5547(a).
    As a
    general matter, the statutory cap applies to each pay period
    (i.e., biweekly). The cap operates as a limit on the
    combination of an employee’s basic and premium pay in a
    two-week period. See 
    id. When an
    employee performs “work in connection with an
    emergency,” however, the biweekly cap in § 5547(a) does not
    apply. 
    Id. § 5547(b)(1).
    Instead, the statute calls for
    calculating the cap on an annual basis. See 
    id. § 5547(b)(2).
    The State Department determined that the military operations
    in Iraq and the aftermath qualified as an emergency. As a
    result, the plaintiffs were subject to the annual cap, which
    provides:
    [N]o employee referred to in [§ 5547(b)(1)]
    may be paid premium pay . . . if, or to the
    extent that, the aggregate of the basic pay and
    premium pay . . . for such employee would, in
    any calendar year, exceed the greater of—
    4
    (A) the maximum rate of basic pay payable
    for GS-15 in effect at the end of such
    calendar year (including any applicable
    locality-based comparability payment . . . );
    or
    (B) the rate payable for level V of the
    Executive Schedule in effect at the end of
    such calendar year.
    
    Id. § 5547(b)(2).
         The statute therefore caps compensation for work in
    connection with an emergency based on the annual maximum
    basic pay rate for GS-15 or the annual pay rate for Executive
    Schedule level V, whichever is greater. At the end of 2004,
    the annual maximum GS-15 pay rate for employees receiving
    no locality pay was $113,674. For employees assigned to
    work in Washington, D.C., the annual maximum GS-15 pay
    rate, including the applicable locality-pay adjustment, was
    $130,305. At that time, the annual Executive Schedule level
    V rate was $128,200.
    With regard to the plaintiffs in this case, if § 5547(b)(2)’s
    cap were calculated as if the plaintiffs received locality pay for
    Washington, D.C.—as they did when assigned to D.C. for the
    first half of 2004—the applicable cap would be $130,305.
    But if the cap were calculated as if the plaintiffs received no
    locality-pay adjustment—as was the case for the second half of
    2004 after their permanent assignment shifted to the U.S.
    Embassy in Baghdad—the applicable cap would be $128,200.
    B.
    In September 2004, the Office of Personnel Management
    issued final regulations implementing § 5547. See Premium
    Pay Limitations, 69 Fed. Reg. 55,941 (Sept. 17, 2004). In
    5
    pertinent part, the regulation implementing § 5547(b)(2)
    largely tracks the statute’s language:
    In any calendar year during which an
    employee has been determined to be
    performing emergency or mission-critical
    work . . . , the employee may receive premium
    pay under this subpart . . . only to the extent
    that the payment does not cause the total of his
    or her basic pay and premium pay for the
    calendar year to exceed the greater of—
    (1) The maximum annual rate of basic pay
    payable for GS-15 (including any applicable
    locality-based comparability payment . . . )
    in effect on the last day of the calendar year;
    or
    (2) The annual rate payable for level V of the
    Executive Schedule in effect on the last day
    of the calendar year.
    5 C.F.R. § 550.106(c).
    OPM also published a statement in the Federal Register
    elaborating on the operation of the annual cap. See Premium
    Pay Limitations, 69 Fed. Reg. at 55,941. The statement
    responded to an agency’s question about the application of the
    cap in the circumstances of this case: when an employee is
    stationed in multiple locality-pay areas during the course of a
    year. OPM explained that the statute “expressly provides that
    the annual premium pay cap must be applied to an entire
    calendar year and that it is based on the applicable rates in
    effect at the end of the calendar year.” 
    Id. As a
    result, “[a]
    geographic move to an area with different pay rates can raise or
    lower an employee’s aggregate basic pay and the end-of-year
    6
    annual cap on premium pay. In turn, a change in aggregate
    basic pay or the end-of-year cap can change retroactively the
    date on which an employee reached the annual premium pay
    cap.” 
    Id. In that
    situation, OPM recognized, “an agency
    may have to recompute retroactively the amount of premium
    pay owed for one or more pay periods.” 
    Id. C. On
    November 24, 2004, shortly after OPM’s new
    regulations took effect, the five plaintiffs received email
    messages from the State Department notifying them that the
    Department was “conducting a review of premium pay
    earnings involving employees supporting the effort in Iraq.”
    J.A. 179. “Because you are assigned overseas,” the message
    explained, “the rate of the annual premium pay cap that applies
    to you is $128,200 (the rate for Level V of the Executive
    Schedule).” 
    Id. The message
    told each plaintiff that his
    earnings to date “have already or will shortly put you above the
    cap for the current pay year,” and that the Department would be
    “obligated to seek collection of [any] overpayments.” 
    Id. As the
    email message forewarned, each plaintiff received
    a letter from the Department in April 2005 requiring repayment
    of premium pay received in excess of § 5547(b)(2)’s cap. The
    amount owed by each plaintiff was: $7,765.83 (Benevento),
    $6,308.07 (Bennett), $5,702.69 (Bopp), $435.94 (Landis), and
    $10,514.98 (Lubow).
    The Department gave the plaintiffs the option to dispute
    their debts through either internal or external administrative
    review. Benevento chose internal review, and his case was
    examined by Deputy Assistant Secretary for Global Financial
    Services James Millette. DAS Millette, relying on the text of
    the statute and OPM’s regulations, determined that
    Benevento’s aggregate basic and premium pay was subject to
    7
    the $128,200 cap because, at the end of calendar year 2004,
    Benevento was assigned to a site with no locality-pay
    adjustment. The other plaintiffs opted for an outside hearing
    before an administrative law judge of the General Services
    Administration Board of Contract Appeals. That judge
    similarly determined that the Department properly applied
    § 5547(b)(2) to the plaintiffs’ situation.
    Each plaintiff also requested that the Department forgive
    the entirety of his debt pursuant to 5 U.S.C. § 5584. That
    provision allows an employing agency to waive any claim
    against an employee “arising out of an erroneous payment of
    pay” if collection “would be against equity and good
    conscience and not in the best interests of the United States.”
    5 U.S.C. § 5584(a). The plaintiffs argued that equitable
    considerations supported waiver because they had volunteered
    for a dangerous overseas assignment in a war zone, because
    there was confusion about how the annual cap would apply,
    and because the nature of their security assignments required
    significant overtime hours. DAS Millette denied the waiver
    requests for all five plaintiffs, reasoning that the plaintiffs bore
    partial responsibility for the overpayments because they
    possessed records that would have alerted them that they had
    received or might receive (and thus would need to repay)
    compensation in excess of the cap. See 
    id. § 5584(b)(1)
    (an
    agency official may not exercise his discretion to waive a claim
    against an employee “if, in his opinion, there exists, in
    connection with the claim, an indication of fraud,
    misrepresentation, fault, or lack of good faith on the part of the
    employee”).
    The plaintiffs filed grievances with the State Department’s
    Foreign Service Grievance Board. The FSGB agreed with
    DAS Millette and the Board of Contract Appeals that the
    $128,200 cap applied to govern the whole year. But the
    8
    FSGB determined that DAS Millette erred in holding the
    plaintiffs partially responsible for the overpayments, agreeing
    with the plaintiffs that it was unlikely that an employee could
    have anticipated how the annual cap would apply. “Nor is it
    clear,” the FSGB’s opinion continued, “what [the plaintiffs]
    could have done to avoid overpayments once [they were]
    notified on November 24 that [they were] nearing the pay cap.”
    J.A. 839. The FSGB sent the plaintiffs’ waiver requests back
    to DAS Millette for a determination of whether collection of
    the overpayments “would be against equity and good
    conscience and not in the best interests of the United States.”
    5 U.S.C. § 5584(a).
    DAS Millette invited the plaintiffs to submit additional
    information. He asked them to address in particular the
    factors that agency officials are instructed to consider under
    § 5584’s corresponding regulation:
    (A) Whether collection of the claim would
    cause serious financial hardship to the
    employee from whom collection is sought.
    (B) Whether, because of the erroneous
    payment, the employee either has relinquished
    a valuable right or changed positions for the
    worse, regardless of the employee’s financial
    circumstances.
    (C) The time elapsed between the erroneous
    payment and discovery of the error and
    notification of the employee;
    (D) Whether failure to make restitution would
    result in unfair gain to the employee;
    9
    (E) Whether recovery of the claim would be
    unconscionable under the circumstances.
    22 C.F.R. § 34.18(b)(1)(iv). In response, the plaintiffs’
    representative submitted a single letter for all five employees
    stating that they wished to “rely upon the record already
    developed in this matter.” J.A. 885.
    DAS Millette again denied the waiver requests. He
    emphasized the plaintiffs’ refusal specifically to address any of
    the 22 C.F.R. § 34.18(b)(1)(iv) factors, including their failure
    to put forth a showing of financial hardship. He grounded his
    decision in the fourth factor: whether waiver of the debts
    would result in “an unfair gain” to the plaintiffs. He explained
    that it would: “I have had to make this determination for over
    thirty other employees in the exact same situation and they
    have paid their debts in full.” J.A. 847.
    The plaintiffs appealed to the FSGB again, and this time, it
    upheld the waiver denials. The FSGB stressed the plaintiffs’
    failure to address any of the 22 C.F.R. § 34.18(b)(1)(iv) factors
    except the fifth (whether “recovery of the claim would be
    unconscionable under the circumstances”). And the FSGB
    found “no basis” to overturn DAS Millette’s judgment that
    granting a waiver to the plaintiffs “would create an unfair gain
    for them vis-a-vis all those similarly situated employees who
    repaid their excess premium pay for 2004.” J.A. 900. The
    FSGB further noted that DAS Millette’s decision was “in line”
    with precedent “discourag[ing] the approval of waivers when
    the employee had reasonably prompt notice that the payments
    were or may have been erroneous, even if the employee was
    not ‘at fault.’  ” 
    Id. 10 D.
    The plaintiffs sought judicial review in federal district
    court. The district court initially remanded the case to the
    Department based on an “intervening event.” Lubow v. U.S.
    Dep’t of State (Lubow I), 
    730 F. Supp. 2d
    . 73, 76 (D.D.C.
    2010). The court noted that, in 2005, Congress enacted the
    Emergency Supplemental Appropriations Act for Defense, the
    Global War on Terror, and Tsunami Relief, 2005 (Emergency
    Supplemental Appropriations Act), Pub. L. No. 109-13, 119
    Stat. 231 (2005). The Act allowed heads of executive
    agencies to “waive” 5 U.S.C. § 5547(b)(2)’s limit on the
    aggregate of basic and premium pay up to $200,000 during
    2005. Emergency Supplemental Appropriations Act § 1008,
    119 Stat. at 243. The State Department had taken advantage
    of that authorization in August 2005 by waiving § 5547(b)(2)’s
    limit on compensation “payable in calendar year 2005” for
    employees in Iraq and Afghanistan. J.A. 281. The district
    court observed that the Department’s waiver applied to
    compensation earned in the last pay period of December
    2004—because that compensation would have been “payable”
    in January 2005—and the court questioned why none of the
    administrative decisions had explained the effect of the 2005
    waiver on the amount of the plaintiffs’ debts. On remand, the
    Department found that the 2005 waiver had no effect on the
    amount of the plaintiffs’ 2004 debts because any pay received
    by the plaintiffs in 2005 had been excluded from the
    Department’s overpayment calculations for 2004.
    The district court then granted summary judgment to the
    defendants. Lubow v. U.S. Dep’t of State (Lubow II), 923 F.
    Supp. 2d 28, 30 (D.D.C. 2013). First, the court addressed
    whether the Department properly determined that the $128,200
    cap governed the whole year. Because the issue turned on the
    validity of OPM’s interpretation of 5 U.S.C. § 5547(b)(2), the
    11
    court applied the two-step framework set forth in Chevron,
    U.S.A., Inc. v. Natural Resources Defense Council, Inc., 
    467 U.S. 837
    (1984). The court resolved the case at step one,
    concluding that OPM’s interpretation was required by “the
    statute’s plain language.” Lubow 
    II, 923 F. Supp. 2d at 35
    .
    “Because plaintiffs were assigned overseas at the end of 2004,”
    the court reasoned, “plaintiffs’ locality-adjusted GS–15 rate in
    effect at that time was $113,674,” making the Executive
    Schedule V rate the higher amount. 
    Id. at 36
    (emphasis
    added).       The court also upheld the Department’s
    determination that its August 2005 waiver pursuant to the
    Emergency Supplemental Appropriations Act had no effect on
    the plaintiffs’ debts, and further ruled that the FSGB had not
    acted arbitrarily in upholding DAS Millette’s decision to deny
    the plaintiffs’ requests for discretionary waivers under 5
    U.S.C. § 5584.
    II.
    The plaintiffs seek review of four final agency actions
    under the Administrative Procedure Act: (i) the FSGB’s
    determination that the Department properly applied 5 U.S.C.
    § 5547(b)(2)’s cap on premium pay; (ii) the Board of Contract
    Appeals’ decision to the same effect; (iii) the Department’s
    decision that the August 2005 waiver had no bearing on the
    plaintiffs’ repayment obligations; and (iv) the FSGB’s
    decision upholding the denial of discretionary waivers under 5
    U.S.C. § 5584. See 22 U.S.C. § 4140(a); 5 U.S.C. § 704.
    The APA “requires us to set aside agency action that is
    ‘arbitrary, capricious, an abuse of discretion, or otherwise not
    in accordance with law.’ ” Jicarilla Apache Nation v. U.S.
    Dep’t of Interior, 
    613 F.3d 1112
    , 1118 (D.C. Cir.
    2010) (quoting 5 U.S.C. § 706(2)(A)).        We evaluate the
    district court’s grant of summary judgment de novo, 
    id., and we
    affirm.
    12
    A.
    We first address the plaintiffs’ challenge to the FSGB’s
    and Board of Contract Appeals’ decisions that their
    compensation for overtime work performed in Iraq exceeded 5
    U.S.C. § 5547(b)(2)’s cap on annual premium pay.
    Subsection 5547(b)(2) instructs agencies to set their
    employees’ annual cap at the higher of two figures: (i) “the
    maximum rate of basic pay payable for GS-15 in effect at the
    end of such calendar year,” including “any applicable
    locality-based comparability payment”; and (ii) “the rate
    payable for level V of the Executive Schedule in effect at the
    end of such calendar year.”                  OPM interprets
    § 5547(b)(2)(A)’s direction to use the GS-15 rate “in effect at
    the end of such calendar year” to require the use of the GS-15
    rate applicable to the specific employee in question. In other
    words, OPM construes “in effect” to reference the
    circumstances applicable to that employee as of December
    31—including, as relevant here, the location of the employee’s
    designated duty station on that date. See 69 Fed. Reg. at
    55,941.
    The plaintiffs dispute OPM’s understanding of the statute.
    They maintain that the statutory references to the GS-15 and
    Executive Schedule rates “in effect at the end of such calendar
    year” intend only to reference the rates generally in force at the
    end of the year. Under that view, the statutory phrase aims
    merely to address a situation in which those rates change
    during the course of the year. For instance, if Congress had
    raised the base GS rates by 2% and made that increase effective
    on September 1, 2004, § 5547(b)(2)(A) would tell the agency
    to use the post-September GS-15 rate in calculating the annual
    cap. Similarly, if Congress increased the amount of locality
    pay for the location “applicable” to the plaintiff’s duty station
    and made that change effective mid-year, the statute would
    13
    instruct the agency to use the higher amount. Under that
    reading, “in effect” would mean only the rate that is legally “in
    effect.” And the statute would remain silent concerning the
    specific question at issue here: which GS-15 rate to use for a
    particular employee whose assigned location changes during
    the year.
    The district court assumed, in accordance with the parties’
    presentations, that Chevron’s two-step framework governed
    the court’s review of OPM’s interpretation of § 5547(b)(2).
    Lubow 
    II, 923 F. Supp. 2d at 35
    . Both parties maintain that
    position on appeal. We accordingly adhere to the parties’
    framing and examine OPM’s interpretation of the statute under
    Chevron. Cf. Humane Soc’y of U.S. v. Locke, 
    626 F.3d 1040
    ,
    1054 n.8 (9th Cir. 2010) (assuming, without deciding, the
    applicability of Chevron based on the parties’ agreement that
    Chevron governed their dispute). Because the plaintiffs
    affirm the applicability of the Chevron framework, we need not
    consider potential arguments they might have made (but did
    not make) against our deferring to the agency under
    Chevron—including the argument contemplated by our
    concurring colleague to the effect that OPM failed to recognize
    its discretion under the statute when issuing its guidance. See
    Peter Pan Bus Lines, Inc. v. Fed. Motor Carrier Safety Admin.,
    
    471 F.3d 1350
    , 1354 (D.C. Cir. 2006). The applicability of
    the Chevron framework does not go to our court’s jurisdiction,
    and a party therefore can forfeit an argument against deference
    by failing to raise it. See Intercollegiate Broad. Sys., Inc. v.
    Copyright Royalty Bd., 
    574 F.3d 748
    , 756 (D.C. Cir. 2009) (per
    curiam).
    Under the Chevron framework, if “Congress has directly
    spoken to the precise question at issue,” then “the court, as well
    the agency, must give effect to the unambiguously expressed
    intent of 
    Congress.” 467 U.S. at 842-43
    . But “if the statute
    14
    is silent or ambiguous with respect to the specific issue,” we
    examine “whether the agency’s answer is based on a
    permissible construction of the statute.” 
    Id. at 843.
    Here, the
    district court resolved the issue in favor of OPM’s
    interpretation at the first step. The court reasoned that
    § 5547(b)(2) establishes a rule that the “the rates at the end of
    the year determine the cap,” which, in the court’s view,
    unambiguously “dictates the outcome in exactly the situation
    where the applicable rate changes during the course of the year,
    regardless of the reason for that change.” Lubow II, 923 F.
    Supp. 2d at 36.
    We find it unnecessary to decide the question of
    § 5547(b)(2)’s ambiguity at Chevron step one: because the
    plaintiffs make no argument that the statute unambiguously
    compels their interpretation, we need not resolve the step-one
    question one way or the other. See Babbitt v. Sweet Home
    Chapter of Cmtys. for a Great Or., 
    515 U.S. 687
    , 703 (1995).
    Even assuming that the plaintiffs could make out a case for the
    statute’s ambiguity or silence at step one, we find that OPM’s
    reading of the text is reasonable and deserving of our deference
    at Chevron step two.
    As explained, OPM reads § 5547(b)(2)(A) to mean that
    the employing agency must apply the GS-15 rate “in effect”
    with respect to the specific employee in question as of
    December 31, taking into account the employee’s locality pay
    as of that date. The phrase “in effect” surely is amenable to
    that reading. Indeed, the district court thought it impossible to
    read the language any other way, because “the text provides no
    basis for separating rates that are in effect at the end of the year
    for a certain reason (e.g., a statutory increase in the GS-15 rate)
    from rates that are in effect at the end of the year for a different
    reason (e.g., a change in location and hence to the
    15
    locality-based comparability payment).” Lubow II, 923 F.
    Supp. 2d at 36.
    Moreover, it is eminently sensible for OPM to apply
    § 5547(b)(2)(A) such that an agency would need to take
    account of an employee’s location only at a single, identifiable
    point during the year for purposes of determining the
    “applicable” locality-based adjustment. As the district court
    noted, selecting some particular date for assigning the amount
    to plug into the premium-pay cap calculation might seem
    unfairly to disadvantage certain employees (who, like the
    plaintiffs, might become subject to a lower cap than would
    otherwise apply) while working to the advantage of other
    employees (who might gain the advantage of a higher cap).
    For instance, an employee transferred at the end of the calendar
    year to a site with a higher locality-based adjustment would
    gain a benefit even though she earned less locality pay for most
    of the year (and vice versa for an employee relocated to a site
    with a lower locality-based adjustment). But “[v]irtually
    every legal (or other) rule has imperfect applications in
    particular circumstances.” Barnhart v. Thomas, 
    540 U.S. 20
    ,
    29 (2003). And here, any such imperfection is substantially
    offset by the significant gains in efficiency attending the
    agency’s having to take account of an employee’s duty station
    only as of a single date.
    The plaintiffs object to what they see as the statute’s
    “retroactive” operation under OPM’s interpretation. They
    argue that it is unreasonable—even absurd—to imagine that
    Congress wrote a statute under which it could turn out that, at
    the end of the year, certain employees become subject to a
    different cap on premium pay than they had anticipated. But
    the statute would be “retroactive” even under the plaintiffs’
    reading of § 5547(b)(2)(A): an agency could not definitively
    calculate its employees’ annual cap until the end of the year
    16
    because the agency would not necessarily know ex ante
    whether the statutory rates might change. Moreover, as OPM
    pointed out when responding to concerns about the burdens
    associated with recalculating the cap for an employee who
    switches locations mid-year, its regulations allow agencies to
    defer payment of premium pay until the end of the year. See 5
    C.F.R. § 550.106(e). If agencies took advantage of that
    authorization, there would be no need to recoup excess
    premium pay from employees after-the-fact. See 69 Fed. Reg.
    at 55,941.
    The merits of OPM’s interpretation become all the more
    apparent when compared with the uncertainty of the alternative
    approach offered by the plaintiffs. Because the plaintiffs
    believe that § 5547(b)(2) does not speak directly to the
    circumstances of this case, they propose that the agency elect
    to implement different premium-pay caps to govern different
    parts of the year. They would apply the statute “as requiring
    that the period that Plaintiffs spent on [temporary duty
    assignment] in Iraq from February 2004 to June 2004 be
    assessed under a cap of $130,305 and that the period from
    when they were assigned to the Embassy in June 2004 to the
    end of the year be assessed under the $128,200 cap.”
    Appellants’ Br. 37 (brackets in original and ellipses omitted).
    But there is no clear understanding of how that prorating
    scheme would work in practice.
    For instance, during oral argument, the plaintiffs
    suggested that, as long as an employee does not exceed the
    applicable cap during the time period that the cap applies—i.e.,
    resetting the aggregate of the employee’s basic and premium
    pay to zero each time the employee becomes subject to a new
    cap—the employee could keep everything he had earned.
    Oral Argument at 14:37–15:30, 52:53–56:10. But that
    approach is of questionable soundness. It would allow an
    17
    employee in the plaintiffs’ situation to earn up to
    $258,505—nearly double the otherwise-applicable annual
    cap—merely by virtue of having undergone a mid-year
    transfer. To the extent the plaintiffs argue that the solution
    would entail applying a prorated cap on a monthly or biweekly
    basis during the relevant parts of the year (a position they also
    seemingly advanced during argument, Oral Argument at
    14:26–14:37, 17:21–18:06), such an approach would stand at
    odds with Congress’s decision not to apply § 5547(a)—the
    subsection utilizing biweekly caps—during emergencies.
    The evident difficulty in understanding the mechanics of the
    plaintiffs’ preferred interpretation contrasts with OPM’s
    straightforward alternative.
    Because OPM’s resolution of the disputed question “is
    based on a permissible construction of the statute,” 
    Chevron, 467 U.S. at 843
    , we defer to OPM’s interpretation of
    § 5547(b)(2). Consequently, we find that it was not arbitrary
    or capricious for the Department to apply OPM’s guidance in
    determining the cap that applied to the plaintiffs’ premium pay
    in 2004.
    B.
    The plaintiffs argue in the alternative that the Department
    acted arbitrarily and capriciously in concluding that the August
    2005 waiver had no bearing on the amount of overpayments
    they received in 2004. The plaintiffs are incorrect.
    In May 2005, Congress, in the Emergency Supplemental
    Appropriations Act, gave executive agencies the authority to
    “waive” § 5547(b)(2)’s limit on the aggregate of basic and
    premium pay so that certain employees could earn up to
    $200,000 without hitting the cap. The State Department
    exercised that authority in August 2005.           But the
    Department’s waiver applied only to compensation “payable in
    18
    calendar year 2005.” That allowance technically extended to
    pay for work performed during the last two weeks of December
    2004 because the corresponding pay date for that period was
    “in calendar year 2005,” i.e., on January 6, 2005. But the
    Department nonetheless determined that the waiver had no
    effect on the amount of the plaintiffs’ 2004 debt because the
    earnings the plaintiffs received on January 6, 2005, were
    excluded from the Department’s 2004 overpayment
    calculations.
    The plaintiffs do not dispute that compensation paid on
    January 6, 2005, was excluded from their respective repayment
    obligations. They nonetheless argue that the “higher pay cap
    was indisputably ‘in effect’ on the last day of the calendar
    year, . . . a fact that should be dispositive, even under the
    Department’s construction of Section 5547.” Appellants’ Br.
    40. But that argument is a non sequitur. The plaintiffs
    apparently seek to invoke the language from § 5547(b)(2), but
    that provision refers only to “the maximum rate of basic pay
    payable for GS-15 in effect at the end of such calendar year”
    and “the rate payable for level V of the Executive Schedule in
    effect at the end of such calendar year.”            5 U.S.C.
    § 5547(b)(2)(A), (B). Neither the Emergency Supplemental
    Appropriations Act nor the Department’s August 2005 waiver
    affected the statutory GS-15 rate or the Executive Schedule V
    rate. The Department’s waiver therefore had nothing to do
    with § 5547(b)(2)’s operation. In fact, the waiver effectively
    supplanted § 5547(b)(2)’s limit with respect to pay received
    during calendar year 2005. And because the plaintiffs
    challenge only the Department’s attempt to recoup
    overpayments they received in 2004, the Department correctly
    found the 2005 waiver to be irrelevant.
    19
    C.
    The plaintiffs’ final challenge concerns the Department’s
    denial of their requests for discretionary waivers pursuant to 5
    U.S.C. § 5584. That provision enables an agency to waive
    collection of an erroneous payment made to an employee when
    collection “would be against equity and good conscience and
    not in the best interests of the United States.” 5 U.S.C.
    § 5584(a). DAS Millette first ruled that the plaintiffs were
    statutorily barred from seeking a waiver because they bore
    partial responsibility for the overpayments. After the FSGB
    reversed that finding on appeal, DAS Millette determined that
    the factors listed in 22 C.F.R. § 34.18(b)(1)(iv) nonetheless
    favored denial. The FSGB upheld that decision.
    We are mindful that the plaintiffs volunteered for what
    was presumably a considerably difficult and dangerous
    assignment to assist the United States’ operations in Iraq in
    2004. And as the FSGB itself acknowledged, “it seems
    unfair” for the government to require the plaintiffs “to refund
    payments for overtime work they actually performed, when
    they had no real option but to perform such work, and when
    those in similar positions in 2005 and subsequent years were
    paid” in full for their overtime work. J.A. 898. But under the
    APA’s standard of review, “a court is not to substitute its
    judgment for that of the agency.” Motor Vehicle Mfrs. Ass’n
    of U.S., Inc. v. State Farm Mut. Auto. Ins. Co., 
    463 U.S. 29
    , 43
    (1983). Instead, we ask whether the agency’s decision “was
    based on a consideration of the relevant factors” and whether
    “there has been a clear error of judgment.” 
    Id. We conclude
    that the FSGB adequately grounded its decision in the relevant
    factors.
    First, the plaintiffs’ failure to submit evidence addressing
    any but the last of the 22 C.F.R. § 34.18(b)(1)(iv) factors
    20
    weighs substantially against our disturbing the agency’s
    exercise of its discretion. Despite DAS Millette’s explicit
    request for additional information, the plaintiffs chose not to
    supplement the record with evidence about whether “collection
    of the claim would cause serious financial hardship,” or
    whether, “because of the erroneous payment, the employee
    either has relinquished a valuable right or changed positions
    for the worse.” 22 C.F.R. § 34.18(b)(1)(iv)(A), (B). We
    agree with the district court that, “[g]iven the dearth of
    information, the [FSGB] had no choice but to conclude that
    [the] financial hardship and detrimental reliance factors
    weighed against waiver.” Lubow 
    II, 923 F. Supp. 2d at 42
    .
    In the context of the record before it, the FSGB’s primary
    rationale—that DAS Millette had already denied waivers to
    other employees in “the exact same situation”—suffices to
    justify its decision. The plaintiffs argue that DAS Millette’s
    and the FSGB’s consideration of other employees was itself
    arbitrary. To the contrary, the regulation instructs the
    deciding agency official to consider whether “failure to make
    restitution would result in unfair gain to the employee.” 22
    C.F.R. § 34.18(b)(1)(iv)(D). That factor is not aimed to
    address circumstances in which the employee obtained an
    overpayment through bad faith, deliberate omission, or some
    other underhanded tactic. In those situations, the statute bars
    the employee from obtaining a waiver, and the agency official
    would not reach the stage where 22 C.F.R. § 34.18(b)(1)(iv)’s
    factors come into play. See 5 U.S.C. § 5584(b)(1); 22 C.F.R.
    § 34.18(b)(1)(i).    Thus, in the absence of a contrary
    explanation (which the plaintiffs do not provide), the “unfair
    gain” factor seems to address precisely the assessment made by
    DAS Millette and the FSGB: whether it would be inequitable
    to give one employee a waiver when similarly situated
    employees received no waiver. Because the FSGB based its
    decision on a factor the regulation apparently requires it to
    21
    consider—and because the plaintiffs do not challenge the
    factors themselves—we cannot say that the Department’s
    determination lacked “reasoned decisionmaking.”    State
    
    Farm, 463 U.S. at 52
    .
    The plaintiffs also object to the FSGB’s consideration of
    the notice they received in November 2004 advising them that
    they had already received, or might soon receive, pay
    exceeding the statutory cap. The FSGB’s decision, however,
    stated only that DAS Millette’s decision was “in line with
    Comptroller General Decisions which have discouraged the
    approval of waivers when the employee had reasonably prompt
    notice that payments were or may have been erroneous, even if
    the employee was not ‘at fault.’  ” J.A. 900 (emphasis added).
    And the FSGB further explained that, “[w]hile our earlier
    decision found that [the plaintiffs] were not at fault in
    accepting or failing to prevent excess premium payments in
    2004, we note that [the plaintiffs] were put on notice in
    November of the year that the overpayment took place that
    they were approaching or had already exceeded the pay cap.”
    
    Id. (emphasis added).
    To the extent the plaintiffs mean to argue that the FSGB
    arbitrarily reversed its earlier determination that the plaintiffs
    were not to blame for the overpayments, the italicized language
    refutes that characterization of the FSGB’s reasoning. To the
    extent the plaintiffs instead dispute the FSGB’s premise—that
    the Department’s November 2004 email constituted
    “reasonably prompt notice” of the possibility of
    overpayments—we fail to see how that would meaningfully
    support their case for a waiver. The plaintiffs offered no
    evidence of detrimental reliance on any belief that they would
    be able to keep their overtime pay. And the plaintiffs have
    consistently argued that they had no choice about working
    significant overtime hours due to the nature of their security
    22
    positions and the realities of the United States’ mission in Iraq
    in 2004. It therefore would seem that the issue of notice is
    largely irrelevant to an assessment of the equities of their case.
    Thus, even if the FSGB mistakenly assumed that the
    November 2004 email messages gave adequate notice that the
    plaintiffs were in danger of exceeding the cap—a
    determination we do not reach—a contrary finding would do
    little to advance the plaintiffs’ case for a waiver.
    *   *    *   *    *
    We affirm the district court’s grant of summary judgment
    to the defendants.
    So ordered.
    SENTELLE, Senior Circuit Judge, concurring: I fully concur
    with the court’s judgment and much of the explanation and
    reasoning leading to the same. However, one critical step of the
    analysis gives me pause. The court applies the reasoning of
    Chevron step two, Chevron, U.S.A., Inc. v. Natural Resources
    Defense Council, Inc., 
    467 U.S. 837
    , 843 (1984), to the Office
    of Personnel Management (“OPM”) interpretation of 5 U.S.C.
    § 5547(b)(2), based on the parties’ apparent assumption that
    there was ambiguity in the statute to be resolved by the OPM.
    See Maj. Op. at 13-14. That resolution by OPM would thus be
    subjected to the deferential standard of Chevron step two and
    upheld if reasonable.       The court reviewed the OPM
    interpretation, found it reasonable, and upheld it. 
    Id. at 14.
    While I do not disagree with the conclusion, I am not sure that
    the approach is fully compliant with our precedent.
    As we have previously stated: “[W]e recently affirmed a
    line of circuit decisions which hold that ‘deference to an
    agency’s interpretation of a statute is not appropriate when the
    agency wrongly believes that interpretation is compelled by
    Congress.’” Peter Pan Bus Lines, Inc. v. Federal Motor Carrier
    Safety Admin., 
    471 F.3d 1350
    , 1354 (D. C. Cir. 2006) (quoting
    PDK Laboratories, Inc. v. DEA, 
    362 F.3d 786
    , 798 (D.C. Cir.
    2004) (other citations omitted)). In the matter before us, the
    OPM has expressed its conclusion that Congress spoke clearly
    to the matter at issue and therefore exercised no resolution of
    ambiguity. Chevron step two deference is thus inappropriate.
    Specifically, the OPM stated: “While we understand the
    agency’s concerns about administrative burdens, the law
    expressly provides that the annual premium pay cap must be
    applied to an entire calendar year and that it is based on the
    applicable rates in effect at the end of the calendar year.”
    Premium Pay Limitations, 69 Fed. Reg. 55941, 55941 (Sept. 17,
    2004). More explicitly, the OPM stated: “Agencies cannot
    2
    avoid certain administrative burdens based on the express
    statutory language in 5 U.S.C. 5547(b)(2), and we cannot change
    the regulations without a legislative amendment to reduce or
    eliminate these administrative burdens.” 
    Id. It appears
    to me
    that under Peter Pan Bus Lines and the cases collected therein,
    we must either rule up or down on the agency’s interpretation
    and not affirm on the basis of deference to its exercise of
    discretion it deemed itself not to have.
    Nonetheless, I concur fully in the result, as it appears to me
    that the agency followed the plain meaning of the statute as
    required by Chevron step one. 
    Chevron, 467 U.S. at 842-43
    .
    As the majority rightly observes, courts have at times
    assumed without deciding the applicability of the Chevron
    framework. Maj. Op. at 13; see, e.g., Humane Soc’y of U.S. v.
    Locke, 
    626 F.3d 1040
    , 1054 n.8 (9th Cir. 2010). Nonetheless, I
    am not convinced that the majority’s reasoning today is
    consistent with our own precedent in the Peter Pan Bus Lines
    line of cases. In this case, however, because I believe the OPM
    interpretation is consistent with the plain language of the statute
    at Chevron step one, I concur in the judgment affirming the
    district court’s grant of summary judgment to the defendants.