Hoyt WEAVER, Petitioner, v. Robert GRAHAM, Governor of Florida.

450 U.S. 24 (101 S.Ct. 960, 67 L.Ed.2d 17)

Hoyt WEAVER, Petitioner, v. Robert GRAHAM, Governor of Florida.

No. 79-5780.

Argued: Nov. 5, 1980.

Decided: Feb. 24, 1981.

Syllabus

Held: A Florida statute repealing an earlier statute and reducing the amount of "gain time" for good conduct and obedience to prison rules deducted from a convicted prisoner's sentence is unconstitutional as an ex post facto law as applied to petitioner, whose crime was committed before the statute's enactment. Pp. 28-36.

(a) For a criminal or penal law to be ex post facto, it must be retrospective, that is, it must apply to events occurring before its enactment, and it must disadvantage the offender affected by it. Lindsey v. Washington, 301 U.S. 397, 401, 57 S.Ct. 797, 799, 81 L.Ed. 1182; Calder v. Bull, 3 Dall. 386, 390, 1 L.Ed. 648. It need not impair a "vested right." Even if a statute merely alters penal provisions accorded by the grace of the legislature, it violates the Ex Post Facto Clause if it is both retrospective and more onerous than the law in effect on the date of the offense. Pp. 28-31.

(b) The effect, not the form, of the law determines whether it is ex post facto. Although the Florida statute on its face applies only after its effective date, respondent conceded that the statute is used to calculate the gain time available to prisoners, such as petitioner, convicted for acts committed before the statute's effective date. Regardless of whether or not the prospect of gain time was in some technical sense part of the petitioner's sentence, the statute substantially alters the consequences attached to a crime already completed, changing the quantum of punishment, and thus is a retrospective law which can be constitutionally applied to petitioner only if it is not to his detriment. Pp. 31-33.

(c) The Florida statute is disadvantageous to petitioner and other similarly situated prisoners. The reduction in gain time that had been available under the repealed statute for abiding by prison rules and adequately performing assigned tasks lengthens the period that someone in petitioner's position must spend in prison. It is immaterial that other statutory provisions were also enacted whereby a prisoner might earn extra gain time by satisfying extra conditions. The award of such extra gain time is purely discretionary, contingent on both the correctional authorities' wishes and the inmate's special behavior, and thus none of the provisions for extra gain time compensates for the reduction of gain time available solely for good conduct. The new provision therefore constricts the inmate's opportunity to earn early release and therebymakes more onerous the punishment for crimes committed before its enactment. Pp. 33-36.

La., 376 So.2d 855, reversed and remanded.

Thomas C. MacDonald, Jr., Menlo Park, Cal., for petitioner.

Wallace E. Allbritton, Tallahassee, Fla., for respondent.

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Justice MARSHALL delivered the opinion of the Court.

Florida, like many other States, rewards each convicted prisoner for good conduct and obedience to prison rules by using a statutory formula that reduces the portion of his sentence that he must serve. In this case, we consider whether a Florida statute altering the availability of such "gain time for good conduct" 1 is unconstitutional as an ex post facto law when applied to petitioner, whose crime was committed before the statute's enactment.

* The relevant facts are undisputed. Petitioner pleaded guilty to second-degree murder. The crime charged occurred on January 31, 1976. On May 13, 1976, petitioner was convicted and sentenced to a prison term of 15 years, less timealready served. The state statute in place on both the date of the offense and the date of sentencing provided a formula for deducting gain-time credits from the sentences "of every prisoner who has committed no infraction of the rules or regulations of the division, or of the laws of the state, and who has performed in a faithful, diligent, industrious, orderly and peaceful manner, the work, duties and tasks assigned to him." Fla.Stat. § 944.27(1) (1975). 2 According to the formula, gain-time credits were to be calculated by the month and were to accumulate at an increasing rate the more time the prisoner had already served. Thus, the statute directed that the authorities "shall grant the following deductions" from a prisoner's sentence as gain time for good conduct:

"(a) Five days per month off the first and second years of his sentence;

"(b) Ten days per month off the third and fourth years of his sentence; and

"(c) Fifteen days per month off the fifth and all succeeding years of his sentence." Fla.Stat. § 944.27(1) (1975).

In 1978, the Florida Legislature repealed § 944.27(1) and enacted a new formula for monthly gain-time deductions. This new statute provided:

"(a) Three days per month off the first and second years of the sentence;

"(b) Six days per month off the third and fourth years of the sentence; and

"(c) Nine days per month off the fifth and all succeeding years of the sentence." Fla.Stat. § 944.275(1) (1979). 3

The new provision was implemented on January 1, 1979, and since that time the State has applied it not only to prisoners sentenced for crimes committed since its enactment in 1978, but also to all other prisoners, including petitioner, whose offenses took place before that date. 4

Petitioner, acting pro se, sought a writ of habeas corpus from the Supreme Court of Florida on the ground that the new statute as applied to him was an ex post facto law prohibited by the United States and the Florida Constitutions. 5 He alleged that the reduced accumulation of monthly gain-time credits provided under the new statute would extend his required time in prison by over 2 years, or approximately 14 percent of his original 15-year sentence. 6 The State Supreme Court summarily denied the petition. 376 So.2d 855. The court relied on its decision in a companion case raising the same issue where it reasoned that "gain time allowance is an act of grace rather than a vested right and may be withdrawn, modified, or denied." Harris v. Wainwright, 376 So.2d 855, 856 (1979). 7 We granted certiorari, 445 U.S. 927, 100 S.Ct. 1311, 63 L.Ed.2d 759, and we now reverse.

II

The ex post facto prohibition 8 forbids the Congress and the States to enact any law "which imposes a punishment for an act which was not punishable at the time it was committed; or imposes additional punishment to that then prescribed." Cummings v. Missouri, 4 Wall. 277, 325-326, 18 L.Ed. 356 (1867). See Lindsey v. Washington, 301 U.S. 397, 401, 57 S.Ct. 797, 799, 81 L.Ed. 1182 (1937); Rooney v. North Dakota, 196 U.S. 319, 324-325, 25 S.Ct. 264, 265-266, 49 L.Ed. 494 (1905); In re Medley, 134 U.S. 160, 171, 10 S.Ct. 384, 387, 33 L.Ed. 835 (1890); Calder v. Bull, 3 Dall. 386, 390, 1 L.Ed. 648 (1798). 9 Through this prohibition, the Framers sought to assure that legislative Acts give fair warning of their effect and permit individuals to rely on their meaning until explicitly changed. Dobbert v. Florida, 432 U.S. 282, 298, 97 S.Ct. 2290, 2300, 53 L.Ed.2d 344 (1977); Kring v. Missouri, 107 U.S. 221, 229, 2 S.Ct. 443, 449, 27 L.Ed. 506 (1883); Calder v. Bull, supra, 3 Dall. at 387. The ban also restricts governmental power by restraining arbitrary and potentially vindictive legislation. Malloy v. South Carolina, 237 U.S. 180, 183, 35 S.Ct. 507, 508, 59 L.Ed. 905 (1915); Kring v. Missouri, supra, 107 U.S., at 229, 2 S.Ct., at 449; Fletcher v. Peck, 6 Cranch 87, 138, 3 L.Ed. 162 (1810); Calder v. Bull, supra, at 395, 396 (Paterson, J.); the Federalist No. 44 (J. Madison), No. 84 (A. Hamilton). 10

In accord with these purposes, our decisions prescribe that two critical elements must be present for a criminal or penal law to be ex post facto: it must be retrospective, that is, it must apply to events occurring before its enactment, 11 and it must disadvantage the offender affected by it. 12 Lindsey v. Washington, supra, 301 U.S., at 401, 57 S.Ct., at 799; Calder v. Bull, supra, at 390. Contrary to the reasoning of the Supreme Court of Florida, a law need not impair a "vested right" to violate the ex post facto prohibition. 13 Evaluating whether a right has vestedis important for claims under the Contracts or Due Process Clauses, which solely protect pre-existing entitlements. See, e. g., Wood v. Lovett, 313 U.S. 362, 371, 61 S.Ct. 983, 987, 85 L.Ed. 1404 (1941); Dodge v. Board of Education, 302 U.S. 74, 78-79, 58 S.Ct. 98, 100, 82 L.Ed. 57 (1937). See also United States Railroad Retirement Board v. Fritz, 449 U.S. 166, 174, 101 S.Ct. 453, 459, 66 L.Ed.2d 368 (1980). The presence or absence of an affirmative, enforceable right is not relevant, however, to the ex post facto prohibition, which forbids the imposition of punishment more severe than the punishment assigned by law when the act to be punished occurred. Critical to relief under the Ex Post Facto Clause is not an individual's right to less punishment, but the lack of fair notice and governmental restraint when the legislature increases punishment beyond what was prescribed when the crime was consummated. Thus, even if a statute merely alters penal provisions accorded by the grace of the legislature, it violates the Clause if it is both retrospective and more onerous than the law in effect on the date ofthe offense. 14 We now consider the Florida statute in light of these two considerations.

The respondent maintains that Florida's 1978 law altering the availability of gain time is not retrospective because, on its face, it applies only after its effective date. Brief for Respondent 12, 15-16. This argument fails to acknowledge that it is the effect, not the form, of the law that determines whether it is ex post facto. 15 The critical question is whether the law changes the legal consequences of acts completed before its effective date. In the context of this case, this question can be recast as asking whether Fla.Stat. § 944.275(1) (1979) applies to prisoners convicted for acts committed before the provision's effective date. Clearly, the answer is in the affirmative. The respondent concedes that the State uses § 944.275(1), which was implemented on January 1, 1979, to calculate the gain time available to petitioner, who was convicted of a crime occurring on January 31, 1976. 16 Thus, the provision attaches legal consequences to a crime committed before the law took effect.

Nonetheless, respondent contends that the State's revised gain-time provision is not retrospective because its predecessor was "no part of the original sentence and thus no part of the punishment annexed to the crime at the time petitioner was sentenced." Brief for Respondent 12. This contentionis foreclosed by our precedents. First, we need not determine whether the prospect of the gain time was in some technical sense part of the sentence to conclude that it in fact is one determinant of petitioner's prison term—and that his effective sentence is altered once this determinant is changed. See Lindsey v. Washington, 301 U.S., at 401-402, 57 S.Ct., at 799; Greenfield v. Scafati, 277 F.Supp. 644 (Mass.1967) (three-judge court), summarily aff'd, 390 U.S. 713, 88 S.Ct. 1409, 20 L.Ed.2d 250 (1968). See also Rodriguez v. United States Parole Comm'n, 594 F.2d 170 (CA7 1979) (elimination of parole eligibility held an ex post facto violation). We have previously recognized that a prisoner's eligibility for reduced imprisonment is a significant factor entering into both the defendant's decision to plea bargain and the judge's calculation of the sentence to be imposed. Wolff v. McDonnell, 418 U.S. 539, 557, 94 S.Ct. 2963, 2975, 41 L.Ed.2d 935 (1974); Warden v. Marrero, 417 U.S. 653, 658, 94 S.Ct. 2532, 2535, 41 L.Ed.2d 383 (1974). See United States v. De Simone, 468 F.2d 1196 (CA2 1972); Durant v. United States, 410 F.2d 689, 692 (CA1 1969). Second, we have held that a statute may be retrospective even if it alters punitive conditions outside the sentence. Thus, we have concluded that a statute requiring solitary confinement prior to execution is ex post facto when applied to someone who committed a capital offense prior to its enactment, but not when applied only prospectively. Compare In re Medley, 134 U.S. 160, 10 S.Ct. 384, 33 L.Ed. 835 (1890), with Holden v. Minnesota, 137 U.S. 483, 11 S.Ct. 143, 34 L.Ed. 734 (1890). See also Cummings v. Missouri, 4 Wall. 277, 18 L.Ed. 356 (1867). 17

For prisoners who committed crimes before its enactment, § 944.275(1) substantially alters the consequences attached to a crime already completed, and therefore changes "the quantum of punishment." See Dobbert v. Florida, supra, 432 U.S., at 293-294, 97 S.Ct., at 2298. Therefore, it is a retrospective law which can be constitutionally applied to petitioner only if it is not to his detriment. Id., at 294, 97 S.Ct., at 2298.

B

Whether a retrospective state criminal statute ameliorates or worsens conditions imposed by its predecessor is a federal question. Lindsey v. Washington, supra, 301 U.S., at 400, 57 S.Ct., at 798. See Malloy v. South Carolina, supra, 237 U.S., at 184, 35 S.Ct., at 508; Rooney v. North Dakota, supra, 196 U.S., at 325, 25 S.Ct., at 265. The inquiry looks to the challenged provision, and not to any special circumstances that may mitigate its effect on the particular individual. Dobbert v. Florida, supra, 432 U.S., at 300, 97 S.Ct., at 2301; Lindsey v. Washington, supra, 301 U.S. at 401, 57 S.Ct., at 799; Rooney v. North Dakota, supra, 196 U.S., at 325, 25 S.Ct., at 265.

Under this inquiry, we conclude § 944.275(1) is disadvantageous to petitioner and other similarly situated prisoners. On its face, the statute reduces the number of monthly gain-time credits available to an inmate who abides by prison rules and adequately performs his assigned tasks. By definition, this reduction in gain-time accumulation lengthens the period that someone in petitioner's position must spend in prison. In Lindsey v. Washington, supra, 301 U.S., at 401-402, 57 S.Ct., at 799, we reasoned that "it is plainly to the substantial disadvantage of petitioners to be deprived of all opportunity to receive a sentence which would give them freedom from custody and control prior to the expiration of the 15-year term." Here, petitioner is similarly disadvantaged by the reducedopportunity to shorten his time in prison simply through good conduct. In Greenfield v. Scafati, supra, we affirmed the judgment of a three-judge District Court which found an ex post facto violation in the application of a statute denying any gain time for the first six months after parole revocation to an inmate whose crime occurred before the statute's enactment. There, as here, the inmate was disadvantaged by new restrictions on eligibility for release. In this vein, the three-judge court in Greenfield found "no distinction between depriving a prisoner of the right to earn good conduct deductions and the right to qualify for, and hence earn, parole. Each . . . materially 'alters the situation of the accused to his disadvantage.' " 277 F.Supp., at 646 (quoting In re Medley, supra, at 171, 10 S.Ct., at 387). See also Murphy v. Commonwealth, 172 Mass. 264, 52 N.E. 505 (1899).

Respondent argues that our inquiry should not end at this point because Fla.Stat. § 944.275(1) (1979) must be examined in conjunction with other provisions enacted with it. Brief for Respondent 18-26. Respondent claims that the net effect of all these provisions is increased availability of gain-time deductions. 18 There can be no doubt that the legislature intended through these provisions to promote rehabilitation and to create incentives for specified productive conduct. See Fla.Stat. § 944.012 (1979). But none of these provisions for extra gain time compensates for the reduction of gain time available solely for good conduct. The fact remains that an inmate who performs satisfactory work and avoids disciplinary violations could obtain more gain time per month under the repealed provision, § 944.27(1) (1975), than he could for the same conduct under the new provision, § 944.275(1) (1979). To make up the difference, the inmate has to satisfy the extra conditions specified by the discretionary gain-time provisions. 19 Even then, the award of the extra gain time is purely discretionary, contingent on both the wishes of the correctional authorities and special behavior by the inmate, such as saving a life or diligent performance in an academic program. Fla.Stat. §§ 944.275(3)(a), (b) (1979). In contrast, under both the new and old statutes, an inmate is automatically entitled to the monthly gain time simply for avoiding disciplinary infractions and performing his assigned tasks. Compare Fla.Stat. § 944.275(1) (1979) with § 944.27(1) (1975). 20 Thus, the new provision constricts the inmate'sopportunity to earn early release, and thereby makes more onerous the punishment for crimes committed before its enactment. This result runs afoul of the prohibition against ex post facto laws. 21

III

We find Fla.Stat. § 944.275(1) (1979) void as applied to petitioner, whose crime occurred before its effective date. We therefore reverse the judgment of the Supreme Court of Florida and remand this case for further proceedings not inconsistent with this opinion. 22

Reversed and remanded.

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Justice BLACKMUN, with whom THE CHIEF JUSTICE joins, concurring in the judgment.

Were the Court writing on a clean slate, I would vote to affirm the judgment of the Supreme Court of Florida. Mythesis would be: (a) the 1978 Florida statute operates only prospectively and does not affect petitioner's credits earned and accumulated prior to the effective date of the statute; (b) "good time" or "gain time" is something to be earned and is not part of, or inherent in, the sentence imposed; (c) all the new statute did was to remove some of petitioner's hope and a portion of his opportunity; and (d) his sentence therefore was not enhanced by the statute. In addition, as the Court's 18th footnote reveals, ante, at 34-35, the statutory change by no means was entirely restrictive; in certain respects it was more lenient, as the Court's careful preservation for this prisoner of the new statute's other provisions clearly implies. Ante, at 36 and this page, n. 22.

The Court's precedents, however, particularly Lindsey v. Washington, 301 U.S. 397, 57 S.Ct. 797, 81 L.Ed. 1182 (1937), and the summary disposition of Greenfield v. Scafati, 277 F.Supp. 644 (Mass.1967), aff'd, 390 U.S. 713, 88 S.Ct. 1409, 20 L.Ed.2d 250 (1968), although not warmly persuasive for me, look the other way, and I thus must accede to the judgment of the Court.

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Justice REHNQUIST, concurring in the judgment.

I find this case a close one. As the Court recently noted: "It is axiomatic that for a law to be ex post facto it must be more onerous than the prior law." Dobbert v. Florida, 432 U.S. 282, 294, 97 S.Ct. 2290, 2298, 53 L.Ed.2d 344 (1977). Petitioner was clearly disadvantaged by the loss of the opportunity to accrue gain time through good conduct pursuant to the 5-10-15 formula when the legislature changed to a 3-6-9 formula. The new statute, however, also afforded petitioner opportunities not availableunder prior law to earn additional gain time beyond the good-conduct formula. * The case is not resolved simply by comparing the 5-10-15 formula with the 3-6-9 formula. "We must compare the two statutory procedures in toto to determine if the new may be fairly characterized as more onerous." Ibid.

I am persuaded in this case, albeit not without doubt, that the new statute is more onerous than the old, because the amount of gain time which is accrued automatically solely through good conduct is substantially reduced, and this reduction is not offset by the availability of discretionary awards of gain time for activities extending beyond simply "staying out of trouble." This is not to say, however, that no reduction in automatic gain time, however slight, can ever be offset by increases in the availability of discretionary gain time, however great, or that reductions in the amount of credit for good conduct can never be offset by increases in the availability of credit which can be earned by more than merely good conduct.

Since the availability of new opportunities for discretionary gain time and the reduction in the amount of automatic gain time can be viewed as a total package, it must be emphasized that nothing in today's decision compels Florida to provide prisoners in petitioner's position with the benefits of the new provisions when this Court has held that Florida may not require such prisoners to pay the price. It is not at all clear that the Florida Legislature would have intended to make available the new discretionary gain time to prisoners earning automatic gain time under the old 5-10-15 formula, when the legislature in fact reduced the 5-10-15 formula when it enacted the new provisions. The question is, of course, one for Florida to resolve.

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1

Fla.Stat. § 944.275(1) (1979); Fla.Stat. § 944.27(1) (1975). At the time of petitioner's offense, Florida used the term "good-time," to refer to extra "allowance for meritorious conduct or exceptional industry." Fla.Stat. § 944.29 (1975). The current Florida law adopts the phrase "gain-time" to apply to various kinds of time credited to reduce a prisoner's prison term. See, e. g., Fla.Stat. § 944.275(3) (1979).

2

The statute also provided for extra discretionary good time, based on other factors. See n. 18, infra.

3

There are some minor language differences in the new provision directing the correctional authorities at the Department of Offender Rehabilitation to make the gain-time deductions. The phrase "who has performed in a satisfactory and acceptable manner the work, duties, and tasks assigned," Fla.Stat. § 944.275(1) (1979), replaces the former phrase, "who has performed in a faithful, diligent, industrious, orderly, and peaceful manner the work, duties, and tasks assigned," Fla.Stat. § 944.27(1) (1975). The new version also explicitly adds that the deductions are to be made "on a monthly basis, as earned," which appears to codify the previous practice. The State Supreme Court assigned no significance to these differences in evaluating the ex post facto claim, nor does any party here assert that these minor language changes are relevant to our inquiry.

4

No saving clause limiting the Act's application was included. 1978 Fla.Laws, ch. 78-304. In applying the new schedule to prisoners like petitioner, the Secretary of the Department of Offender Rehabilitation relied on the legal opinion of the Attorney General of Florida. Fla.Op.Atty.Gen. 078-96 (1978).

5

"No State shall . . . pass any . . . ex post facto Law." U.S.Const., Art. I, § 10, cl. 1. The Florida Constitution similarly provides that "[n]o . . . ex post facto law . . . shall be passed." Fla.Const., Art. I, § 10. See also Fla.Const., Art. X, § 9 (forbidding state legislature to enact a statute "affect[ing] [the] prosecution or punishment" for any offense previously committed).

6

Petitioner estimated that his "tentative expiration date" under Fla.Stat. § 944.27 (1975) would be December 31, 1984. App. 15a. The State calculated that application of the new gain-time provision starting with its effective date resulted in a projected release date of February 2, 1987. Id., at 12a-13a. The State does not dispute petitioner's contention that a difference of over two years is at stake.

7

The Florida court also distinguished cases from other jurisdictions striking down retrospective statutes that eliminated the allowance of gain time in specified situations, revised the entire scheme of criminal penalties, and extended the incarceration of juvenile offenders. 376 So.2d, at 857 (distinguishing Dowd v. Sims, 229 Ind. 54, 95 N.E.2d 628 (1950); Goldsworthy v. Hannifin, 86 Nev. 252, 468 P.2d 350 (1970); In re Dewing, 19 Cal.3d 54, 136 Cal.Rptr. 708, 560 P.2d 375 (1977); and In re Valenzuela, 275 Cal.App.2d 483, 79 Cal.Rptr. 760 (1969)).

8

U.S.Const., Art. I, § 9, cl. 3; Art. I, § 10, cl. 1. "So much importance did the [c]onvention attach to [the ex post facto prohibition], that it is found twice in the Constitution." Kring v. Missouri, 107 U.S. 221, 227, 2 S.Ct. 443, 448, 27 L.Ed. 506 (1883).

9

"The enhancement of a crime, or penalty, seems to come within the same mischief as the creation of a crime or penalty" after the fact. Calder v. Bull, 3 Dall., at 397 (Paterson, J.). See also Fletcher v. Peck, 6 Cranch 87, 138, 3 L.Ed. 162 (1810) ("An ex post facto law is one which renders an act punishable in a manner in which it was not punishable when it was committed").

10

The ex post facto prohibition also upholds the separation of powers by confining the legislature to penal decisions with prospective effect and the judiciary and executive to applications of existing penal law. Cf. Ogden v. Blackledge, 2 Cranch 272, 277, 2 L.Ed. 276 (1804).

11

See Jaehne v. New York, 128 U.S. 189, 194, 9 S.Ct. 70, 71, 32 L.Ed. 398 (1888) (portion of legislation void which " 'should endeavor to reach by its retroactive operation acts before committed' ") (quoting T. Cooley, Constitutional Limitations 215 (5th ed. 1883)).

12

We have also held that no ex post facto violation occurs if the change effected is merely procedural, and does "not increase the punishment nor change the ingredients of the offense or the ultimate facts necessary to establish guilt." Hopt v. Utah, 110 U.S. 574, 590, 4 S.Ct. 202, 210, 28 L.Ed. 262 (1884). See Dobbert v. Florida, 432 U.S. 282, 293, 97 S.Ct. 2290, 2298, 53 L.Ed.2d 344 (1977). Alteration of a substantial right, however, is not merely procedural, even if the statute takes a seemingly procedural form. Thompson v. Utah, 170 U.S. 343, 354-355, 18 S.Ct. 620, 624, 42 L.Ed. 1061 (1898); Kring v. Missouri, supra, at 232, 2 S.Ct., at 452.

13

In using the concept of vested rights, Harris v. Wainwright, 376 So.2d, at 856, the Florida court apparently drew on the test for evaluating retrospective laws in a civil context. See 2 C. Sands, Sutherland on Statutory Construction § 41.06 (4th ed. 1973); Hochman, The Supreme Court and the Constitutionality of Retroactive Legislation, 73 Harv.L.Rev. 692, 696 (1960); Smead, The Rule Against Retroactive Legislation: A Basic Principle of Jurisprudence, 20 Minn.L.Rev. 775, 782 (1936). Discussion of vested rights has seldom appeared in ex post facto analysis, as in identifying whether the challenged change is substantive rather than procedural. Hopt v. Utah, supra, 110 U.S., at 590, 4 S.Ct., at 210. When a court engages in ex post facto analysis,

which is concerned solely with whether a statute assigns more disadvantageous criminal or penal consequences to an act than did the law in place when the act occurred, it is irrelevant whether the statutory change touches any vested rights. Several state courts have properly distinguished vested rights from ex post facto concerns. E. g., State v. Curtis, 363 So.2d 1375, 1379, 1382 (La.1978); State ex rel. Woodward v. Board of Parole, 155 La. 699, 700, 99 So. 534, 535-536 (1924); Murphy v. Commonwealth, 172 Mass. 264, 272, 52 N.E. 505, 507 (1899).

Respondent here advances several theories that incorporate the vested rights approach. For example, respondent defends Fla.Stat. § 944.275(1) (1979) on the ground that it does not take away any gain time that petitioner has already earned. Brief for Respondent 39-40. Although this point might have pertinence were petitioner alleging a due process violation, see Wolff v. McDonnell, 418 U.S. 539, 94 S.Ct. 2963, 41 L.Ed.2d 935 (1974), it has no relevance to his ex post facto claim.

14

Durant v. United States, 410 F.2d 689, 691 (CA1 1969); Adkins v. Bordenkircher, 262 S.E.2d 885, 887 (W.Va.1980); Goldsworthy v. Hannifin, 86 Nev., at 256-257, 468 P.2d, at 352. See Murphy v. Commonwealth, supra, at 272, 52 N.E., at 507.

15

"The Constitution deals with substance, not shadows. Its inhibition was levelled at the thing, not the name. It intended that the rights of the citizen should be secure against deprivation for past conduct by legislative enactment, under any form, however disguised." Cummings v. Missouri, 4 Wall. 277, 325, 18 L.Ed. 356 (1867).

16

See App. 12a-13a (Affidavit, Louie Wainwright, Secretary, Department of Corrections).

17

Even when the sentence is at issue, a law may be retrospective not only if it alters the length of the sentence, but also if it changes the maximum sentence from discretionary to mandatory. Lindsey v. Washington, 301 U.S. 397, 401, 57 S.Ct. 797, 799, 81 L.Ed. 1182 (1937). The critical question, as Florida has often acknowledged, is whether the new provision imposes greater punishment after the commission of the offense, not merely whether it increases a criminal sentence. Greene v. State, 238 So.2d 296 (Fla.1970); Higginbotham v. State, 88 Fla. 26, 31, 101 So. 233, 235 (1924); Herberle v. P. R. O. Liquidating Co., 186 So.2d 280, 282 (Fla.App.1966). Thus in Dobbert v. Florida, 432 U.S. 282, 97 S.Ct. 2290, 53 L.Ed.2d 344 (1977), we held there was no ex post facto violation because the challenged provisions changed the role of jury and judge in sentencing, but did not add to the "quantum of punishment." Id., at 293-294, 97 S.Ct. at 2298. In Malloy v. South Carolina, 237 U.S. 180, 35 S.Ct. 507, 59 L.Ed. 905 (1915), we concluded that a change in the method of execution was not ex post facto because evidence showed the new method to be more humane, not because the change in the execution method was not retrospective. Id., at 185, 35 S.Ct., at 509.

18

These other provisions permit discretionary grants of additional gain time for inmates who not only satisfy the good-conduct requirement, but who also deserve extra reward under designated categories. Under § 944.275(3)(b) (1979), "special gain-time" of 1 to 60 days "may be granted" to an "inmate who does some outstanding deed, such as the saving of a life or assisting in the recapturing of an escaped inmate." Another provision specifies that an inmate "may be granted" one to six extra gain-time days per month if he "faithfully performs the assignments given to him in a conscientious manner over and above that which may normally be expected of him" and also either shows "his desire to be a better than average inmate" or "diligently participates in an approved course of academic or vocation study." § 944.275(3)(a). An inmate may be awarded up to one gain-time credit for labor evaluated "on the basis of diligence of the inmate, the quality and quantity of work performed, and the skill required for performance of the work." § 944.275(2)(b). Finally, for inmates unable to qualify under this previous provision due to "age, illness, infirmity, or confinement for reasons other than discipline," additional gain time of up to six days per month may be granted for "constructive utilization of time." § 944.275(2)(e).

19

In addition, few of the "new" sources for extra gain time do more than reiterate previous opportunities provided by statute or state regulation. Compare Fla.Stat. § 944.275(3)(a) (1979) with § 944.29 (1975) ("an extra good-time allowance for meritorious conduct or exceptional industry"); Fla.Stat. § 944.275(2)(b) (1979) with § 944.27 (1975) (authorizing administrative rules governing additional gain time) and Fla.Admin.Code, Rule 10B-20.04(1) (1975) (gain time for construction labor project); Fla.Stat. § 944.275(3)(b) (1979) with Rule 10B-20.04(2) (1975) (gain time for outstanding deed). Moreover, under the statute in existence when petitioner's crime occurred, the Department of Corrections enjoyed greater discretion as to the reasons for awarding extra gain time, and as to the amount that could be awarded. See § 944.29 (1975).

20

As respondent put it, "all any prisoner had to do . . . was to stay out of trouble." Brief for Respondent 25. The monthly gain-time provision, both at the time of petitioner's offense and now, directed that the Department of Corrections "shall" award gain time to those who obey the rules and perform their work satisfactorily. Fla.Stat. § 944.27(1) (1975); Fla.Stat. § 944.275(1) (1979). The discretionary extra gain time cannot fully compensate for the reduced accumulation of gain time for good behavior, for the discretionary credit is more uncertain. Cf. In re Medley, 134 U.S. 160, 172, 10 S.Ct. 384, 388, 33 L.Ed. 835 (1890) (rejecting nondisclosure of execution date as ex post facto increase of uncertainty and mental anxiety). Moreover, replacement of mandatory sentence reduction with discretionary sentence reduction cannot be permissible in light of Lindsey v. Washington, 301 U.S., at 401, 57 S.Ct., at 799. There we rejected as an ex post facto violation a legislative change from flexible sentencing to mandatory maximum sentencing because the retrospective legislation restricted defendants' opportunity to serve less than the maximum time in prison.

21

We need not give lengthy consideration to respondent's claim that the challenged statute, Fla.Stat. § 944.275(1) (1979), is merely procedural because it does not alter the punishment prescribed for petitioner's offense. Brief for Respondent 13, 17-18. This contention is incorrect, given the uncontested fact that the new provision reduces the quantity of gain time automatically available, and does not merely alter procedures for its allocation. See supra, Part II-A. Respondent's reliance on a general statement of legislative intent unrelated to the gain-time provision, see Brief for Respondent 17 (citing Fla.Stat. § 944.012(6) (1979)), is also unpersuasive.

22

The proper relief upon a conclusion that a state prisoner is being treated under an ex post facto law is to remand to permit the state court to apply, if possible, the law in place when his crime occurred. See Lindsey v. Washington, supra, at 402, 57 S.Ct., at 799; In re Medley, supra, at 173, 10 S.Ct., at 388. In remanding for this relief, we note that only the ex post facto portion of the new law is void as to petitioner, and therefore any severable provisions which are not ex post facto may still be applied to him. See 2 C. Sands, Sutherland on Statutory Construction § 44.04 (4th ed. 1973).

*

While the Court points out that gain time was available under the old scheme beyond the 5-10-15 formula, ante, at 35, n. 19, I am not convinced that the new sources simply "reiterate[d]" opportunities previously available. There is, for example, no dispute that several of the new sources of gain time have no analogues in the previous statutory or administrative scheme. See, e. g., Fla.Stat. § 944.275(2)(e) (1979) (up to six days of gain time per month because of age, illness, infirmity, or confinement for reasons other than discipline); § 944.275(3)(a) (up to six days per month for inmates who diligently participate in an approved course of academic or vocational study). Other new statutory provisions which had only administrative counterparts improved substantially on the availability of gain time. For example, under the old administrative system, an inmate could receive from 1 to 15 days of gain time per month for constructive labor, Fla.Admin.Code, Rule 10B-20.04(1) (1975), while under the new statutory scheme, an inmate can receive up to 1 day of gain time for every day of constructive labor, Fla.Stat. § 944.275(2)(b) (1979).