Inmate Denny Propp brought a postcon-viction relief action challenging a determination by the department of corrections (DOC) that he was ineligible to receive earned-time credits after he was removed from a sex offender treatment program for misconduct. See generally Iowa Code § 903A.2 (2005) (providing for reduction in sentence for good conduct and satisfactory participation in specified programs). Propp claimed this application of the governing statute, as amended in 2001 and 2005, violated the Ex Post Facto Clause because the offense for which Propp was incarcerated was committed prior to the amendments. The district court held the DOC’s application of amended section 903A.2 to Propp violated the Ex Post Fac-to Clauses of the United States and Iowa Constitutions. The State brought this original certiorari action to challenge the legality of the district court’s decision. Because we conclude the district court’s ruling was correct, we annul the writ of certiorari.
I. Background Facts and Proceedings.
Propp is currently incarcerated аt the Mount Pleasant Correctional Facility on a twenty-five-year sentence for his 1997 con *795 viction of third-degree sexual abuse. 1 At the time of his sentencing, section 903A2 allowed Propp to reduce his sentence through good-time credits. See Iowa Code § 90BA.2 (Supp.1997). 2 Pursuant to the 1997 statute, Propp was eligible for a sentence reduction of one day for each day of good conduct and, in addition, could earn a further reduction of up to five days per month for satisfactory participation in a variety of activities and programs, including treatment programs established by the director of the DOC. Id. The director of the DOC was authorized to establish rules specifying what constituted “satisfactory participation” in employment, treatment, and other programs for purposes of sentence reduction. Id. § 903A.4 (1997).
In 2000, while Propp was still serving his sentence, the legislature amended section 903A.2. 2000 Iowa Acts ch. 1173, § 4. Under the new statute, “[a]n inmate ... serving a category “A” sentence is eligible for a reduction of sentence equal to one and two-tenths days for each day the inmate demonstrates good conduct and satisfactоrily participates in any program or placement status identified by the director to earn the reduction.” Iowa Code § 903A.2(l)(a) (2001) (emphasis added). Thus, effective January 1, 2001, inmates like Propp with category “A” sentences were eligible to earn a reduction in their sentence only by demonstrating good conduct and satisfactorily participating in any program identified by the director. Id. In other words, good conduct alone was no longer enough to qualify an inmate for a reduction in sentence under amended section 903A.2; eаrned-time credits, as they were now labeled, were also contingent on satisfactory participation in programming.
In 2005, the statute was amended once again, this time with respect to sex offenders. See 2005 Iowa Acts ch. 158, § 32. This amendment, effective July 1, 2005, added the following provision to section 903A.2: “However, an inmate required to participate in a sex offender treatment program shall not be eligible for a reduction of sentence unless the inmate participates in and completes a sex offender treatment рrogram established by the director.” 3 Iowa Code § 903A.2 (Supp. *796 2005). To implement this legislation, the DOC adopted a policy providing that inmates required to participate in sex offender treatment programs (SOTP) who refused treatment, were removed from treatment, or failed program completion criteria would not be eligible for earned-time credits.
Based upon his conviction for third-degree sexual abuse, Propp was required to participate in the SOTP. Propp began the treatment program, but was removed from the SOTP for misconduct in April 2006. Although Propp did not lose credits he had already earned, he was deemed ineligible to receive further earned-time credits until he was reinstated to the program. Prior to his removal from the SOTP, his tentative date of discharge was January 27, 2009; after his removal, his new tentative discharge date was June 12, 2012. In October 2006, Propp was reinstated to the SOTP, resulting in a new tentative date for discharge of May 20, 2009. Thus, Propp’s time in prison was extended by approximately four months due to his temporary ineligibility to accumulate earned-time credits.
After exhausting his administrative remedies, Propp filed a postconviction relief action, claiming his loss of earned-time eligibility violated the Ex Post Facto and Due Process Clauses of the United States and Iowa Constitutions. 4 Propp requested that his original tentative discharge date of January 27, 2009, be reinstated. After hearing, the district court ruled application of the amended version of section 903A.2 to Propp violated the prohibition against ex post facto laws. The court ordered the DOC to reinstate Propp’s original tеntative discharge date. The court rejected Propp’s contention that his due process rights had been violated.
The State then filed this certiorari action. Because we agree with the well-reasoned decision of the district court, we annul the writ of certiorari.
II. Scope of Review.
The issue in this case involves a constitutional provision, the Ex Post Facto Clause. Therefore, “we review the case de novo in light of the totality of the circumstances and record upon which the post-conviction court ruling was made.”
Rushing v. State,
III. Governing Legal Principles.
The United States Constitution provides: “No State shall ... pass any ... ex post facto Law....” U.S. Const. art. I, § 10. For constitutional purposes, an ex post facto law is
any statute which punishes as a crime an act previously committed, which was innocent when done, which makes more *797 burdensome the punishment for a crime, after its commission, or which deprives one charged with crime of any defense available according to law at the time when the act was committed....
Beazell v. Ohio,
The purpose of the prohibition against ex post facto laws is “to assure legislative Acts give fair warning of their effect and permit individuals to rely on their meaning until explicitly changed.”
Weaver v. Graham,
In
Weaver,
the issue was “whether a Florida statute altering the availability of ... ‘gain time for good cоnduct’ [was] unconstitutional as an
ex post facto
law when applied to [Weaver], whose crime was committed before the statute’s enactment.”
Id.
at 25,
In 1978, after Weaver’s crime and sentencing, the Florida legislature enacted a new formula for monthly gain-time credits: three days per month for the first two years, six days per month for the third and fourth years, and nine days per month for the fifth and subsequent years.
Id.
at 26,
In determining whether the new statute was retrospective, the Court stated “[t]he
*798
critical question is whether the law changes the legal consequences of acts completed before its effective date.”
Id.
at 31,
The Court then considered whether the statute made “more onerous the punishment for crimes committed before its enactment.”
Id.
at 33-36,
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.
Id.
at 33,
The
Weaver
case is helpfully contrasted with the Court’s decision in
California Department of Corrections v. Morales,
Morales claimed the new law effectively increased his sentence in violation of the Ex Post Facto Clause.
Id.
at 504,
In a subsequent case,
Lynce v. Mathis,
Unlike the California amendment at issue in Morales, the [amended] statute [here] did more than simply remove a mechanism that created an opportunity for early release for a class of prisoners whose release was unlikely; rather, it made ineligible for early release a class of prisoners who were previously eligible — including some like petitioner, who had actually been released.
Id.
at 447,
IV. Discussion.
A. Retrospective Application. Our first task in determining whether amended section 903A.2 violates thе Ex Post Facto Clause is to ascertain whether the law has retrospective effect. In the context of the present case, the question is whether the amended statute applies to prisoners convicted for offenses committed before the provision’s effective date.
See Weaver,
The State argues this conclusion is inconsistent with the purpose of the ex post facto prohibition, which is to give fair warning of the effect of statutory provisions and permit individuals to rely on those provisions until thеy are changed.
See Weaver,
B. Impact on Punishment. We next consider whether the amended statute increases the penalty by which Propp’s crime is punishable or, stated differently, whether it makes the punishment for his crime more onerous.
Lynce,
In contrast, by virtue of the subsequent amendments in 2001 and 2005, Propp can no longer earn credits merely by following institutional rules. Now he must follow the rules and satisfactorily participate in any programs required by the director. Thus, if Propp does not participate in the SOTP, but behaves in every other way, he will have a longer period of incаrceration under the amended statute than he would have had under the statute in effect at the time of his sentencing.
The State argues the amended statute did not make Propp’s punishment for his crime more onerous, however, because “[t]he formula that is used to compute earned time has been changed only in a way that actually benefits him.” While it is true that an inmate can now earn 1.2 days of earned-time credits per day rather than one day of good-time credits as under the old formula, as we have already explained, the requirements to qualify for this credit have changed considerably. The United States Supreme Court was unpersuaded by a similar argument in
Weaver.
In
Weaver,
the state argued the net effect of the new statute was to increase availability of gain-time reductions because the new statute provided for discretionary grants of additional gain time that were unavailable under the former statute.
[N]one of these provisions for extra gain time compensates for the reduction of gain time available solely for good conduct. The faсt remains that an inmate who performs satisfactory work and avoids disciplinary violations could obtain more gain time per month under the repealed provision ... than he could for the same conduct under the new provision.... To make up the difference, the inmate has to satisfy the extra conditions specified by the discretionary gain-time provisions.... In contrast, under both the new and old statutes, an inmate is automatically entitled to the monthly gain time simply for avoiding *801 disciplinary infractions and performing his assigned tasks.
Id.
at 35,
This passage aptly describes the situation presented by Prоpp’s challenge to amended section 903A.2. Under the old statute, Propp was automatically entitled to one day of good-conduct time for each day he avoided a disciplinary violation. Now, he has to satisfy extra conditions— satisfactory participation in programming — to receive
any
earned-time credits. Stated differently, under the original statute, Propp lost eligibility for five days of good-time credit each month he did not satisfactorily participate in a treatment program, but he remained eligible for thirty days of good-conduct credit, assuming a thirty-day month, notwithstanding his unsatisfactory participation. Under the new statute, his failure to satisfactorily participate renders him ineligible to earn
any
reduction in his sentence, even if he has no disciplinary infractions. We are convinced this difference is a substantive change in the formula used to calculate a reduction in sentence because, as in
Weaver,
it “retroactively decreased] the amount of [earned]-time awarded for an inmate’s good behavior.”
Lynce,
For the same reasons, we reject the State’s argument that the statute merely changed the conduct that was required to earn credits. As the State correctly points out, prison officials have the ability to change institutional rules without violating the prohibition against ex post faсto laws.
See Gilbert v. Peters,
The Ex Post Facto Clause does not prevent prison administrators from adopting and enforcing reasonable regulations that are consistent with good prison administration, safety and efficiency. ...
It is precisely because reasonable prison regulations, and subsequent punishment for infractions thereof, are contemplated as part of the sentence of *802 every prisoner, that they do not constitute additional punishment and are not classified as ex post facto. Moreover, since a prisoner’s original sentence does not embrace a right to one set of regulations over another, reasonable amendments, too, fall -within the anticipated sentence of every inmate.
The flaw in the State’s attempt to categorize the amendment at issue here as a mere change in prison regulations is that the statutory scheme in effect in 1997 clearly treated compliance with institutional rules and participation in treatment рrograms distinctly: an inmate was rewarded for good behavior separately from the good-time credits he received for participating in programming. Analyzing the present situation from the aspect of notice, we think a person in Propp’s position who was sentenced under the earlier version of section 903A.2 would have been on notice that institutional rules change over time. Accordingly, someone in Propp’s position would also have been on notice that the precise conduct required to qualify fоr good-conduct credits may also vary over time. Nevertheless, a person in Propp’s position would have had the expectation that, if he simply complied with institutional rules, he could cut his sentence in half. That is not the case under the current statutory scheme for earned-time credits. Even if Propp complies with institutional rules, he will not earn any reduction in his sentence unless he also satisfactorily participates in the SOTP. We think this case is indistinguishable from
Weaver,
in which the Court found an ex post facto violation because “аn inmate who performs satisfactory work and avoids disciplinary violations could obtain more gain time per month under the repealed provision ... than he could for the same conduct under the new provision.”
V. Disposition.
The district court correctly determined the DOC’s application of amended section 903A.2 to inmates whose crimes predated the amеndments violates the constitutional prohibition of ex post facto laws. Therefore, the court did not act illegally in ordering the State to reinstate Propp’s original tentative discharge date of January 27, 2009. We annul the writ of certiorari.
WRIT ANNULLED.
Notes
. The record does not reveal the date of Propp's offense that resulted in this sentence.
. In pertinent part, the 1997 version of section 903A.2 provided:
903A.2 Good time.
1. Each inmate committed to the custody of the director of the department of corrections is eligible for a reduction of sеntence for good behavior in the manner provided in this section. For purposes of calculating the amount of time by which an inmate's sentence may be reduced, inmates shall be grouped into the following two sentencing categories:
a. ... An inmate of an institution under the control of the department of corrections who is serving a category "A” sentence is eligible for a reduction of sentence equal to one day for each day of good conduct while committed to one of the department’s institutions. In additiоn, each inmate who is serving a category “A" sentence is eligible for an additional reduction of up to five days per month if the inmate participates satisfactorily in any of the following activities:
(1) Employment in the institution.
(2) Iowa state industries.
(3) An employment program established by the director.
(4) A treatment program established by the director.
(5) An inmate educational program approved by the director.
Iowa Code § 903A.2 (Supp.1997) (emphasis added). Propp had a category “A” sentence.
.The practice of the DOC is to allow an inmate required to participate in a sex offender treatment program to earn credits while awaiting placement in the program rather than being deemed ineligible until completion of the program. This interpretation of the statute is not challenged in this case.
. Propp does not claim that requiring him to participate in the SOTP is itself a violation of the Ex Post Facto Clause.
Cf. Schreiber v. State,
. Subsequent to its decision in Weaver, the Court clarified that not any disadvantage to the offender satisfies the second element of the ex post facto analysis:
After Collins [v. Youngblood,497 U.S. 37 ,110 S.Ct. 2715 ,111 L.Ed.2d 30 (1990)], the focus of the ex post facto inquiry is not on whether a legislative change produces some ambiguous sort of “disadvantage,” nor ... on whether an amendment affects a prisoner’s "opportunity to take advantage of provisions for early release,” ... but on whether any such change alters the definition of criminal conduct or increases the penalty by which a crime is punishable.
Cal. Dep't of Corr. v. Morales,
. We focus on the date of Propp’s sentencing because the record does not reveal the date of his crime.
. The facts of
Stansbury
are remarkably similar to this case. Under the statutory scheme in effect when Stansbury committed his crime, inmates could earn eighty percent of the available good-time credits by avoiding any disciplinary violations.
Stansbury,
We acknowledge there are decisions from other states that are contrary to Stansbury and our holding in this case. These cases are either factually distinguishable, are not consistent with Supreme Court precedent, or are simply unpersuasive.
