Amended September 10, 2015 Terri Aleta Rivera v. Woodward Resource Center and State of Iowa ( 2015 )


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  •                  IN THE SUPREME COURT OF IOWA
    No. 14–0194
    Filed June 30, 2015
    Amended September 10, 2015
    TERRI ALETA RIVERA,
    Appellant,
    vs.
    WOODWARD RESOURCE CENTER and STATE OF IOWA,
    Appellees.
    Appeal from the Iowa District Court for Dallas County, Randy V.
    Hefner, Judge.
    A terminated employee appeals from a district court judgment
    entered on a jury verdict in favor of her employer on her claim for
    wrongful discharge in violation of public policy. AFFIRMED.
    Jill M. Zwagerman and Bryan P. O’Neill (until withdrawal) of
    Newkirk Zwagerman, P.L.C., Des Moines, for appellant.
    Thomas J. Miller, Attorney General, Jeffrey S. Thompson, Solicitor
    General, Barbara E.B. Galloway, Assistant Attorney General, and
    Timothy L. Vavricek (until withdrawal), Assistant Attorney General, for
    appellees.
    2
    APPEL, Justice.
    A terminated employee appeals from a district court judgment
    entered on a jury verdict in favor of her employer on her claim for
    wrongful discharge in violation of public policy. The employee contends
    the district court submitted instructions to the jury that were legally
    erroneous and confusing, and the district court should have granted her
    motion for a new trial. Upon our review, we affirm the judgment of the
    district court.
    I. Factual and Procedural Background.
    In late April 2006, Woodward Resource Center (WRC) hired Terri
    Rivera as a residential treatment worker.             WRC, operated by the Iowa
    Department of Human Services, provides health and rehabilitation
    services to children and adults with mental and physical disabilities.
    WRC hired Rivera as a probationary employee for a six-month period but
    terminated her employment within the probationary period on October 3.
    On September 26, 2008, Rivera filed a wrongful discharge suit
    against WRC and the State. 1           In her petition, Rivera claimed she was
    terminated because she made complaints to WRC regarding suspected
    patient abuse and asserted her discharge violated state public policy
    established in Iowa Code chapters 135C and 235B. WRC contended it
    terminated Rivera because she accrued three unscheduled absences.
    After     the    resolution     of   issues     related   to   exhaustion   of
    administrative remedies and an appeal to this court related to the
    timeliness of the complaint under the applicable statute of limitations,
    1We   refer to the defendants collectively as WRC.
    3
    the case was remanded to the district court for further proceedings. 2
    The case proceeded to trial on December 9, 2013.
    At trial, Rivera testified she witnessed several incidents of patient
    abuse at WRC.           She claimed to have observed one of her coworkers
    punch and push a patient. She also testified she saw a coworker force
    one patient to eat mayonnaise until he gagged and eat a meal into which
    he had just vomited. Rivera further told the jury that she was told the
    same coworker had put jalapeno peppers, known as “hot sauce,” in the
    individual’s eyes.          Rivera testified she reported the abuse to her
    supervisor and then reported it to her supervisor’s superior in September
    2006.
    Rivera testified that prior to her report of abuse she received good
    feedback from her supervisor and was told she was doing a great job.
    She further asserted she was given additional responsibilities as her
    employment progressed.
    Rivera claimed her report of abuse led to her termination.                   She
    testified that when she began her employment at WRC, she was told that
    if she wanted to make it through her probationary period, she should not
    make complaints or she would be fired.
    Regarding attendance, Rivera offered evidence that WRC did not
    have a written policy related to three unscheduled absences for
    probationary employees, but instead had a written policy that was
    distributed and applied to all employees that allowed up to ten
    unscheduled absences before termination and required progressive
    discipline.      She presented numerous attendance records of individuals
    2See   generally Rivera v. Woodward Res. Ctr., 
    830 N.W.2d 724
    (Iowa 2013).
    4
    who were not fired after three absences during their probationary
    periods.
    WRC offered evidence challenging Rivera’s version of events,
    including evidence that Rivera had three unscheduled absences during
    her probationary period. WRC noted that during one of the unscheduled
    absences, Rivera was seen attending a garage sale. According to WRC
    administrators, WRC maintained a long-standing practice of terminating
    probationary employees who had three unscheduled absences during
    their probationary period.    WRC offered evidence that attendance was
    very important in a facility providing around-the-clock care and that
    attendance     was   the   primary   factor   in   determining   whether   a
    probationary employee would be retained.
    WRC Treatment Program Administrator John Andorf testified he
    determined termination was appropriate “given her three unscheduled
    absences” and that the termination was not because of her report of
    abuse.     WRC also offered evidence that Rivera’s only report of abuse
    related to the “hot sauce” incident, that the report was untimely under
    WRC policies, and that, in any event, WRC investigated the incident and
    found no abuse.
    Before submitting the case to the jury, the district court crafted its
    proposed jury instructions.    Instruction No. 13 stated that in order to
    recover on her claim, Rivera must prove, among other things, that her
    making of “reports of suspected dependent adult abuse was the
    determining factor in the decision to terminate her employment.” There
    is no dispute with respect to Instruction No. 13.
    Instruction No. 15 instructed the jury on the determining-factor
    standard and gave rise to the fighting issues in this case. Instruction No.
    15 stated:
    5
    The “determining factor” need not be the main reason
    motivating the decision to terminate employment.       The
    determining factor need only be the reason which tips the
    scales decisively one way or the other.       If Woodward
    Resource Center would have made the decision to discharge
    Rivera even if she had not reported suspected dependent
    adult abuse, the reports were not the determining factor in
    the decision to terminate her employment. The reports were
    not the determinative factor if Woodward Resource Center
    had an overriding business reason for terminating Rivera’s
    employment.
    Instruction No. 15 also addressed the issue of pretext:
    You may find that Rivera’s complaints were the
    determining factor if Rivera has proved that Woodward
    Resource Center’s stated reasons for its actions were not the
    real reasons, but were pretexts to hide its motives. Pretext is
    a stated purpose, reason, explanation, or motive offered by
    an employer in order to cloak a discriminatory motive.
    Pretext is simply one method of proof that you may consider.
    Rivera objected to Instruction No. 15, stating:
    [I]f we’ve already proven our case that the reason her
    complaints of a dependent adult abuse were the determining
    factor in the decision to fire her, then that encompasses it.
    And then [WRC] get[s] to say but then they have an
    overriding business justification, which I think then is a
    burden shifting . . . . I think [the overriding business
    justification] needs to be treated more like as an affirmative
    defense . . . .
    The district court stated its understanding of the objection: “Well,
    if I understand your objection.   You’re basically expressing the same
    concern with use of the language ‘overriding business factor’ as
    expressed by Judge Bennett in Hagen v. Siouxland Obstetrics.” In that
    case, Judge Bennett questioned whether
    an employer’s lack of an overriding business justification for
    firing an employee is an independent element of a wrongful
    discharge claim, or if that element is implicit in the
    requirement that an employee’s protected conduct be the
    determining factor in an employer’s decision to fire the
    employee.
    6
    Hagen v. Siouxland Obstetrics & Gynecology, P.C. (Hagen I), 
    964 F. Supp. 2d
    951, 972 (N.D. Iowa 2013).           Rivera responded “Yes” to the district
    court’s inquiry and the district court overruled Rivera’s objection to
    Instruction No. 15.
    The case was submitted to the jury, which returned a verdict for
    WRC.      Rivera filed a motion for a new trial, which the district court
    denied. Rivera appealed.
    In this appeal, Rivera challenges Instruction No. 15 on two
    grounds. First, she claims the “overriding business reason” language in
    the fourth sentence of Instruction No. 15 improperly shifted the burden
    of proof and was confusing to the jury.            Second, she claims the third
    sentence of Instruction No. 15 amounted to a “same decision” theory 3
    that has no place in a claim for wrongful discharge in violation of public
    policy.
    II. Standard of Review.
    “We review the denial of a motion for new trial based on the
    grounds asserted in the motion.” Fry v. Blauvelt, 
    818 N.W.2d 123
    , 128
    (Iowa 2012) (internal quotation marks omitted). If the motion is based on
    a legal question, our review is for correction of errors at law. 
    Id. The basis
    for the motion for a new trial in this case was an alleged error in
    jury instructions, which we review for legal error. See Boyle v. Alum-Line,
    Inc., 
    710 N.W.2d 741
    , 748 (Iowa 2006). Jury instructions “must convey
    the applicable law in such a way that the jury has a clear understanding
    of the issues it must decide.”          Thompson v. City of Des Moines, 
    564 N.W.2d 839
    , 846 (Iowa 1997).
    3Rivera describes her same-decision theory as involving an “employer admitting
    that it used an improper purpose for firing [an] individual, [h]owever the employer then
    justifies that it had a right to fire the employee because it would have made the same
    decision to fire her based upon some other reason.”
    7
    Instructional errors do not merit reversal unless prejudice results.
    DeBoom v. Raining Rose, Inc., 
    772 N.W.2d 1
    , 5 (Iowa 2009); Wells v.
    Enter. Rent-A-Car Midwest, 
    690 N.W.2d 33
    , 36 (Iowa 2004).         Prejudice
    occurs and reversal is required if jury instructions have misled the jury,
    or if the district court materially misstates the law. 
    DeBoom, 772 N.W.2d at 5
    ; Anderson v. Webster City Cmty. Sch. Dist., 
    620 N.W.2d 263
    , 268
    (Iowa 2000).
    III. Preservation of Error.
    We first consider whether Rivera has preserved error with respect
    to her challenges raised on appeal.      There is no question that Rivera
    preserved her challenge regarding the overriding-business-reason issue
    arising out of the fourth sentence of Instruction No. 15.       On appeal,
    however, Rivera also challenges the third sentence of Instruction No. 15,
    claiming that it amounts to a same-decision defense that has no place in
    public-policy torts and is incorrect as a matter of law. Rivera argues that
    but-for causation only requires the public-policy violation to be a “tipping
    point” in the decision-making process, nothing more.
    Based on our review of the district court record, we conclude that
    the   same-decision   challenge   was    not   preserved.    While   Rivera
    emphasized the problems with the “overriding business reason” language
    in sentence four of Instruction No. 15, Rivera identified no specific
    problem with respect to the third sentence of the instruction beyond its
    relationship to the alleged overriding-business-reason flaw. See Grefe &
    Sidney v. Watters, 
    525 N.W.2d 821
    , 824 (Iowa 1994) (“[An] objection
    must be sufficiently specific to alert the trial court to the basis for the
    complaint so that if error does exist the court may correct it before
    placing the case in the hands of the jury.”); see also Lynch v. Saddler,
    
    656 N.W.2d 104
    , 110–11 (Iowa 2003) (same); cf. Iowa R. Civ. P. 1.924
    8
    (noting objections to jury instructions must specify the “matter objected
    to and on what grounds”).
    IV. Overview of Issues Presented on Appeal.
    In her challenge to Instruction No. 15, Rivera maintains that a
    plaintiff seeking to prove wrongful discharge in violation of public policy
    does not need to prove that the employer lacked an overriding business
    justification.   In support of her argument, Rivera cites Iowa Civil Jury
    Instruction 3100.1, which in turn cites Smith v. Smithway Motor Xpress,
    Inc., 
    464 N.W.2d 682
    (Iowa 1990), and Springer v. Weeks & Leo Co., 
    429 N.W.2d 558
    (Iowa 1988).         Iowa State Bar Ass’n, Iowa Civil Jury
    Instruction 3100.1 (2012). Iowa Civil Jury Instruction 3100.1 does not
    contain an overriding-business-justification element. See 
    id. From this
    premise, Rivera argues the fourth sentence of the
    instruction improperly shifted the burden of proof to her to show the
    employer lacked an overriding business justification for her termination.
    While recognizing that the element of an overriding business justification
    has been referred to in some of our cases, see, e.g., Davis v. Horton, 
    661 N.W.2d 533
    , 535–36 (Iowa 2003) (citing Fitzgerald v. Salsbury Chem.,
    Inc., 
    613 N.W.2d 275
    , 281–82 & n.2 (Iowa 2000)), Rivera argues the
    element is not appropriate in light of the heightened but-for burden of
    causation that this court has required in wrongful-discharge-in-violation-
    of-public-policy claims, see, e.g., Teachout v. Forest City Cmty. Sch. Dist.,
    
    584 N.W.2d 296
    , 301 (Iowa 1998). Rivera traces the derivation of the
    overriding-business-justification element to a treatise writer, Professor
    Henry H. Perritt, Jr. See 2 Henry H. Perritt, Jr., Employee Dismissal Law
    and Practice § 7.24, at 66–67 (4th ed. 1998) [hereinafter Perritt I]. She
    contends Professor Perritt clarified his position in later versions of his
    treatise to note that the fourth element is only applicable in cases in
    9
    which the employer concedes the wrongful motive played a part in the
    employment decision. See Henry H. Perritt, Jr., Employee Dismissal Law
    and Practice § 7.08, at 7-100.1 (5th ed. 2008 & Supp. 2014) [hereinafter
    Perritt II].
    Rivera notes the issue was extensively reviewed in Hagen I.      In
    Hagen I, the United States District Court for the Northern District of Iowa
    canvassed the development of Iowa law regarding wrongful discharges in
    violation of public policy. 
    964 F. Supp. 2d
    at 972–76. The court noted
    that under Iowa law, the causation requirement in a wrongful-discharge-
    in-violation-of-public-policy claim is a heightened “determining factor”
    standard rather than a lower “motivating factor” standard ordinarily
    utilized in civil rights claims. 
    Id. at 975–76.
    In light of the heightened
    causation standard, the court concluded the lack of legitimate business
    justification was not an additional element in the plaintiff’s case. 
    Id. at 976.
    Although the court certified the question to this court, we declined
    to rule because we were equally divided on the question of whether a
    public policy was implicated in Hagen I.        See Hagen v. Siouxland
    Obstetrics & Gynecology, P.C. (Hagen II), No. 13–1372, 
    2014 WL 1884478
    ,
    at *1 (Iowa May 9, 2014) (per curiam).
    WRC responds by noting that under our caselaw, the plaintiff must
    show a lack of legitimate business reason. WRC cites a number of Iowa
    cases which include a business justification element. See Jasper v. H.
    Nizam, Inc., 
    764 N.W.2d 751
    , 761 (Iowa 2009); 
    Fitzgerald, 613 N.W.2d at 282
    n.2. In any event, WRC maintains the instruction was not reversible
    error because it did not misstate the law or confuse the jury.
    To resolve Rivera’s challenge to Instruction No. 15, we must engage
    in a two-step inquiry. The first question is whether, as a matter of law,
    the plaintiff in a wrongful-discharge-in-violation-of-public-policy case
    10
    must prove the employer lacked a legitimate business justification for the
    termination.   If a plaintiff must make such a showing, Rivera has not
    been harmed by the instruction.        Second, if we decide a wrongful-
    discharge-in-violation-of-public-policy plaintiff is not required to show
    the employer lacked a legitimate business justification as an element of
    the claim, we must examine the instruction in this case to determine if it
    was legally flawed and, if so, whether reversible error occurred.
    V. Elements      of     Wrongful-Discharge-in-Violation-of-Public-
    Policy Claim.
    A. Oscillating Elements of Claim in Iowa Caselaw.
    1. Elements of claim in Iowa cases through Fitzgerald and the
    development of Iowa Civil Jury Instructions Chapter 3100. In Springer, we
    first held an at-will employee in Iowa could not be terminated for reasons
    contrary to public 
    policy. 429 N.W.2d at 560
    –61.        Since Springer, we
    have found multiple public policy rationales may support a wrongful
    termination claim of at-will employees in a variety of settings. See, e.g.,
    Dorshkind v. Oak Park Place of Dubuque II, L.L.C., 
    835 N.W.2d 293
    , 303–
    06 (Iowa 2013) (reporting violations of law regarding health and safety of
    patients in an assisted living facility); 
    Jasper, 764 N.W.2d at 766
    –67
    (finding sufficient public policy rationale in administrative rule regarding
    ratio of children to daycare providers); 
    Fitzgerald, 613 N.W.2d at 286
    –88
    (refusing to commit or suborn perjury); 
    Teachout, 584 N.W.2d at 300
    –01
    (reporting of child abuse); Tullis v. Merrill, 
    584 N.W.2d 236
    , 239 (Iowa
    1998) (complaining that company was not paying insurance benefits);
    Lara   v.   Thomas,   
    512 N.W.2d 777
    ,   782   (Iowa    1994)   (pursuing
    unemployment benefits).
    11
    In this case, however, the public policy element of a wrongful
    discharge claim is not contested on appeal. The questions in this appeal
    relate only to the causation element of a wrongful discharge claim.
    We addressed the causation element of a wrongful-discharge-in-
    violation-of-public-policy claim in 
    Smith. 464 N.W.2d at 686
    . In Smith,
    we held the unlawful purpose must be the determining factor behind the
    discharge.   
    Id. We noted
    a determining factor “need not be the main
    reason behind the decision.”      
    Id. Rather, the
    unlawful purpose “need
    only be the reason which tips the scales decisively one way or the other.”
    
    Id. Eight years
    later, in Teachout, we considered the elements of a
    wrongful-discharge-in-violation-of-public-policy claim, and the causation
    requirement in 
    particular. 584 N.W.2d at 299
    –303. We stated that in
    order to recover damages for termination of employment in violation of
    public policy, the “plaintiff must establish (1) engagement in a protected
    activity, (2) adverse employment action, and (3) a causal connection
    between the two.” 
    Id. at 299.
    Our statement of the elements in Teachout
    did not require the plaintiff prove the employer lacked a reasonable
    business justification. See 
    id. With respect
    to causation, we stated “[t]he causation standard in a
    common-law retaliatory discharge case is high.” 
    Id. at 301.
    We noted
    the “engagement in protected conduct must be the determinative factor”
    in the adverse employment decision. 
    Id. at 301–02
    (emphasis in original)
    (citing 
    Smith, 464 N.W.2d at 686
    ). Further, we expressly overruled court
    of appeals precedent equating a determining factor with a predominant
    factor. 
    Id. at 302
    n.2. We stated that a factor is determinative if it “tips
    the scales decisively one way or the other, even if it is not the
    12
    predominant reason behind the employer’s decision.” 
    Id. at 302
    (internal
    quotation marks omitted).
    In Phipps v. IASD Health Services Corp., we demonstrated
    application of causation principles in a wrongful-discharge-in-violation-
    of-public-policy case.   
    558 N.W.2d 198
    , 202–03 (Iowa 1997).       In that
    case, we affirmed summary judgment for an employer when the
    employee’s only evidence that protected conduct was linked to his
    discharge was the fact that he was fired one month after he filed a
    grievance questioning the legality of his employer’s conduct under the
    Iowa Wage Payment Collections Act.         
    Id. at 201,
    203.   We found the
    record contained evidence of unacceptable performance and repeated
    disciplinary problems, which we characterized as legitimate reasons for
    the employee’s discharge.    
    Id. at 203.
        As a result, the Phipps court
    considered legitimate reasons for discharge as evidence that could be
    used to determine whether the protected conduct was the determining
    factor in the discharge. 
    Id. If the
    purported reasons were not opposed
    by substantial evidence to the contrary, they could be outcome
    determinative.   Id.; see also 
    Teachout, 584 N.W.2d at 303
    (finding
    insufficient evidence of retaliation and evidence that there was a
    personality conflict between assistant and supervising teacher).
    When the Iowa State Bar Association developed its Iowa Civil Jury
    Instructions in chapter 3100 related to wrongful-discharge-in-violation-
    of-public-policy actions, it relied upon the Smith case. See Iowa State
    Bar Ass’n, Iowa Civil Jury Instruction ch. 3100. It included a causation
    requirement that the protected conduct be the determining factor in the
    adverse employment action.       
    Id. No. 3100.1.
         With respect to the
    determining factor, Instruction 3100.3 stated, “A determining factor need
    13
    not be the main reason behind the decision. It need only be the reason
    which tips the scales decisively one way or the other.” 
    Id. No. 3100.3.
    The notion that the lack of a legitimate business justification might
    be an element of the plaintiff’s case first appears in our cases in
    
    Fitzgerald. 613 N.W.2d at 282
    n.2. In Fitzgerald, the court considered
    whether a wrongful discharge claim could be brought based upon a
    public policy favoring truthful testimony.    
    Id. at 285.
       We concluded
    Iowa’s statutes against perjury and the suborning of perjury provided a
    public policy rationale sufficient to support a wrongful termination
    action. 
    Id. at 286.
    We then proceeded to consider whether the evidence in the case
    related to causation was sufficient to survive summary judgment. 
    Id. at 289.
    We cited Teachout for the proposition that protected conduct “must
    be the determinative factor in the decision to terminate the employee.”
    
    Id. (citing Teachout,
    584 N.W.2d at 301–02).         As in Teachout, we
    characterized the standard of causation as “high.” Id.; see also 
    Teachout, 584 N.W.2d at 301
    . We also recognized, as in Teachout and Phipps, that
    “the existence of other legal reasons or motives for the termination are
    relevant in considering causation.” 
    Fitzgerald, 613 N.W.2d at 289
    ; see
    also 
    Teachout, 584 N.W.2d at 303
    ; 
    Phipps, 558 N.W.2d at 203
    . Based on
    our review of the record, we concluded there was sufficient evidence to
    preclude summary judgment. 
    Fitzgerald, 613 N.W.2d at 289
    .
    In Fitzgerald, we included a footnote suggesting for the first time in
    our caselaw that there may be an overriding-business-justification
    element to wrongful-discharge-in-violation-of-public-policy cases. 
    Id. at 282
    n.2.    In footnote 2, we noted “[s]ome courts are beginning to
    articulate the elements of a cause of action for wrongful discharge” as
    including four elements, including an element that the “[e]mployer lacked
    14
    an overriding business justification for the dismissal (the absence of
    justification element).” 
    Id. We cited
    cases from two other jurisdictions,
    Gardner v. Loomis Armoured Inc., 
    913 P.2d 377
    , 382 (Wash. 1996) (en
    banc), and Collins v. Rizkana, 
    652 N.E.2d 653
    , 657 (Ohio 1995). 
    Id. We noted
    Professor Perritt advocated the approach in his academic writings.
    
    Id. at 282
    & n.2; see also Perritt I § 7.9, at 17–19; Henry H. Perritt, Jr.,
    The Future of Wrongful Dismissal Claims: Where Does Employer Self
    Interest Lie?, 58 U. Cin. L. Rev. 397 (1989) [hereinafter The Future of
    Wrongful Dismissal Claims]. We did not expressly adopt the approach,
    but stated it was “a helpful guide and actually parallels the approach we
    have followed in addressing the tort on a case-by-case method.”
    
    Fitzgerald, 613 N.W.2d at 282
    n.2. The bottom line is that in Fitzgerald,
    we cited and applied the three elements of wrongful discharge from
    Teachout, but suggested in a footnote that there was some authority for a
    fourth element, lack of an overriding business justification. 
    Id. at 281
    &
    282 n.2.
    2. Elements of claim in Iowa cases after Fitzgerald. The discussion
    in the Fitzgerald footnote resurfaced in Davis. 
    See 661 N.W.2d at 535
    –
    36. In Davis, we considered whether participating in a mediation process
    and hiring an attorney was protected conduct that could give rise to a
    wrongful-discharge-in-violation-of-public-policy claim.   
    Id. at 536.
      The
    case involved an employee in a county treasurer’s office who had
    difficulties with the elected county treasurer.      
    Id. at 534–35.
        She
    requested and received formal mediation, but was placed on probation
    and demoted after the mediation session. 
    Id. at 535.
    She then hired an
    attorney to contest the demotion.     
    Id. About a
    month later, she was
    fired. 
    Id. 15 In
    Davis, we discussed the four-element test from the Fitzgerald
    footnote in the body of the opinion and declared the wrongful-discharge-
    in-violation-of-public-policy tort had four elements. 
    Id. at 535–36
    (citing
    
    Fitzgerald, 613 N.W.2d at 282
    n.2).        We rejected the notion that
    participation in mediation was protected conduct that could give rise to a
    wrongful-discharge-in-violation-of-public-policy claim. 
    Id. at 536.
    With
    respect to the claim that hiring counsel was protected conduct, we stated
    that “on the facts of the present dispute it is clearly impossible to
    separate [the plaintiff’s] act in hiring an attorney from her act in
    challenging a personnel decision made by her employer” and that the
    “act should not be insulated from sanction merely because it has been
    carried out through an attorney.” 
    Id. We again
    cited the Fitzgerald formulation of the elements of a
    wrongful-discharge-in-violation-of-public-policy claim in Lloyd v. Drake
    University, 
    686 N.W.2d 225
    , 228 (Iowa 2004) (citing 
    Fitzgerald, 613 N.W.2d at 282
    n.2). Interestingly, in Lloyd, we stated the four-element
    Fitzgerald approach was in accord with the three-element Teachout
    approach. 
    Id. However, we
    did not address the causation question, and
    only addressed the question of whether a discharge for attempting to
    uphold the criminal laws of the state may be a violation of public policy.
    See 
    id. at 229.
    Finally, in Jasper, we again cited the Fitzgerald formulation as
    stating the elements of a wrongful-discharge-in-violation-of-public-policy
    claim. 
    Jasper, 764 N.W.2d at 761
    (citing 
    Fitzgerald, 613 N.W.2d at 282
    n.2).   However, in Jasper, as in Lloyd, we were not called upon to
    consider any issues related to the putative fourth element of the cause of
    action. See 
    id. (addressing only
    the public policy and evidence proving
    causation elements).
    16
    3. Hagen I, II, and III. Against this backdrop of Iowa authority, the
    United States District Court for the Northern District of Iowa wrestled
    with the question of elements of a wrongful-discharge-in-violation-of-
    public-policy claim in Iowa. In Hagen I, the plaintiff physician claimed he
    was wrongfully discharged in violation of public policy because
    (a) [he] report[ed], stat[ed] an intention to report, or
    [stat]ed that he might report, to a hospital, conduct of nurses
    that [he] believed may have involved wrongful acts or
    omissions;
    (b) [he] disclos[ed] to a patient or a patient’s family that
    the patient may have been the victim of negligent care or
    malpractice; or
    (c) [he] consult[ed] with an attorney, stat[ed] an
    intention to consult with an attorney, or stat[ed] that he
    might consult with an attorney, about whether another
    doctor or nurses had committed wrongful acts of omissions
    that [he] should report to the Iowa Board of Medicine or a
    hospital.
    
    964 F. Supp. 2d
    at 956.
    In Hagen I, the district court certified the following question to this
    court:
    Under Iowa law, is an employer’s lack of an “overriding
    business justification” for firing an employee an independent
    element of a wrongful discharge claim, or is that element
    implicit in the element requiring that an employee’s
    protected activity be the determining factor in the employer’s
    decision to fire the employee?
    
    Id. In its
    discussion of the question of lack of business justification
    under Iowa law, the district court recognized the formulation of
    Fitzgerald and its progeny contained four elements for wrongful-
    discharge-in-violation-of-public-policy claims, including lack of business
    justification.    
    Id. at 975.
       Yet, the district court reasoned that the
    “business justification element” was implicit in the determining factor
    17
    analysis of causation. 
    Id. at 974.
    According to the district court, other
    legitimate business reasons could prevent the protected conduct from
    tipping the scale and thus being a determining factor in the adverse
    employment action. 
    Id. However, the
    district court went on to explain:
    Nothing in Iowa law supports the proposition that merely
    having an alternative business reason for firing an employee
    can insulate an employer from a wrongful discharge claim
    where the evidence shows that the reason that actually
    tipped the scales toward firing that employee violates public
    policy.
    
    Id. at 974–75
    (emphasis in original).
    The district court then examined the derivation of the four-element
    test cited in Fitzgerald and subsequent cases. 
    Id. at 975–76.
    The district
    court traced the four-element test starting from Jasper through
    Fitzgerald to the Gardner and Collins cases cited in the Fitzgerald
    footnote.     
    Id. As acknowledged
    in Fitzgerald, the district court found
    these cases derived their analysis from the writings of Professor Perritt.
    
    Id. at 975.
    The district court then turned its attention to the writings of
    Professor Perritt and his seminal law review article in which he presented
    the elements of a wrongful-discharge-in-violation-of-public-policy action,
    including the fourth element of lack of legitimate business justification.
    
    Id. at 975
    (citing The Future of Wrongful Dismissal Claims, 58 U. Cin. L.
    Rev. at 398–99).        The district court pointed out, however, that in
    Professor Perritt’s formulation, the third element of wrongful discharge,
    the element related to causation, differed materially from Iowa law. See
    
    id. at 975–76.
    Under Professor Perritt’s approach, causation need only
    be a motivating factor for the adverse employment action, while under
    Iowa law protected conduct must be the determining factor. Id.; cf. The
    Future of Wrongful Dismissal Claims, 58 U. Cin. L. Rev. at 399 (describing
    18
    the causation element as: “[t]he plaintiff’s dismissal was motivated by
    conduct related to the public policy”).
    In the law, such distinctions and nuances matter. As explained by
    the district court, under a motivating-factor standard of causation, a
    plaintiff could prevail when protected conduct was a motivating factor
    even if the determining factor was the legitimate business reason. See
    Hagen I, 
    964 F. Supp. 2d
    at 976. Thus, an additional element may make
    some sense in preventing such an untoward result.         
    Id. The district
    court reasoned that because of Iowa’s use of the higher and more
    demanding determining-factor standard, the fourth element in the Perritt
    formulation should not be regarded as a separate element under Iowa
    law but as implicit in Iowa’s causation standard.        
    Id. Because the
    district court conceded that Iowa law was not clear on the point,
    however, it certified the question to us. 
    Id. We divided
    evenly on the first
    question of whether the plaintiff presented conduct protected by public
    policy, however, and we declined to answer the other questions posed by
    Judge Bennett. See Hagen II, 
    2014 WL 1884478
    , at *1. On remand, the
    federal district court denied all claims for relief based upon instructions
    that did not require the plaintiff to prove lack of legitimate business
    reason as a separate element.             Hagen v. Siouxland Obstetrics &
    Gynecology, P.C. (Hagen III), 
    23 F. Supp. 3d 991
    , 1009 (N.D. Iowa 2014).
    B. Discussion of Elements of Wrongful-Discharge-in-Violation-
    of-Public-Policy Claims.       The above discussion reveals that our
    precedents in this area are not surefooted. Prior to Fitzgerald, there was
    no suggestion of a fourth element in a wrongful-discharge-in-violation-of-
    public-policy case. See 
    Teachout, 584 N.W.2d at 299
    . While footnote 2
    in Fitzgerald was elevated into the text in our subsequent cases, the
    question of whether an employee proved a lack of legitimate business
    19
    justification was not explicitly an issue in these later cases. See 
    Jasper, 764 N.W.2d at 761
    ; 
    Lloyd, 686 N.W.2d at 228
    –29; 
    Davis, 661 N.W.2d at 535
    –36.    Further, we declared that the four elements of wrongful
    discharge contained in the Fitzgerald footnote were parallel to our public
    policy tort cases, which was not quite correct. See 
    Lloyd, 686 N.W.2d at 228
    .   Language in our earlier cases, never disowned, indicate that a
    plaintiff may prevail in a wrongful-discharge-in-violation-of-public-policy
    case even if the protected conduct is not the primary factor, but is
    nevertheless the determining factor, causing the adverse employment
    action. See 
    Teachout, 584 N.W.2d at 302
    n.2; 
    Smith, 464 N.W.2d at 686
    .
    We thus regard this case as an opportunity to clarify the elements of a
    wrongful-discharge-in-violation-of-public-policy claim, the allocation of
    the burden of proof, and the role of legitimate business reasons or
    justifications in the claim.
    First, we recognize the basic and consistent teaching of our
    caselaw, namely, that in order to prevail on a wrongful discharge claim in
    violation of public policy, the plaintiff must show the protected conduct
    was the determining factor in the adverse employment action. See 
    Lloyd, 686 N.W.2d at 229
    ; 
    Teachout, 584 N.W.2d at 301
    ; 
    Smith, 464 N.W.2d at 686
    .    Further, we recognize our caselaw has consistently stated a
    determining factor is one that tips the balance in an employment
    decision. See 
    Teachout, 584 N.W.2d at 302
    n.2; 
    Smith, 464 N.W.2d at 686
    .   In order to be the determining factor, it is not necessary the
    protected conduct be “the main reason behind the decision,” but it must
    be the factor that makes the difference in the employment outcome.
    
    Smith, 464 N.W.2d at 686
    ; see 
    Davis, 661 N.W.2d at 536
    (analogizing
    determining factor to the “final straw in [the employer’s] decision to
    20
    terminate [the plaintiff’s] employment”).      No party challenges these
    established principles in this case.
    Second, we conclude the lack of legitimate business justification is
    not an element of the claim that the plaintiff must prove. Plaintiffs are
    rarely required to prove a negative.          Moreover, Judge Bennett’s
    distinction between motivating factor and determining factor has been
    recognized in our cases. See, e.g., 
    DeBoom, 772 N.W.2d at 9
    n.4 (noting
    use of motivating factor was preferable to determining factor in a case
    involving pregnancy discrimination “in order to eliminate confusion
    between tortious discharge and discrimination claims”). Because under
    our cases plaintiffs must prove that the protected conduct was the
    determining factor, Iowa law does not impose liability on an employer
    when the determining factor was a legitimate business reason and
    unlawful retaliation was simply a motivating factor.
    Third, the fact the plaintiff does not have the burden to show the
    employer lacked an overriding business justification does not mean
    evidence related to an employer’s legitimate business reasons has no
    relevance   in   a   wrongful-discharge-in-violation-of-public-policy   case.
    Indeed, an employer will prevail if it convinces the fact finder that the
    legitimate business reasons supporting the action were so strong as to
    defeat the conclusion that the protected conduct was the determining
    factor in the adverse employment decision. See, e.g., 
    Phipps, 558 N.W.2d at 200
    –01, 203.      In other words, the Iowa Civil Jury Instructions on
    causation are sufficiently broad to allow an employer to make the case
    that the legitimate business reasons, and not the protected conduct,
    were the determining factor in the employment decision.
    Fourth, we believe there may be some relatively rare circumstances
    when an employer is entitled to an affirmative defense of an overriding
    21
    business justification.   As noted by Professor Perritt in his revised
    treatise, there may be occasions in which an employee is in fact
    terminated because of protected conduct, but the employer should
    nonetheless prevail. See Perritt II § 7.08, at 7-100.1. For instance, in
    Harman v. La Crosse Tribune, an employee claimed he was fired for
    conduct protected by the First Amendment to the United States
    Constitution, but his conduct also violated the ethical rules of attorneys.
    
    344 N.W.2d 536
    , 540 (Wis. Ct. App. 1984). In this situation, with two
    competing public policies, the employer may be able to establish an
    overriding business reason for the termination. See 
    id. at 540–41.
    As
    noted by Professor Perritt, in such a case, the employer admits the
    protected conduct caused the termination, but asserts another policy
    trumps the public policy asserted by the employee. See Perritt II § 7.08,
    at 7-100.1. No such claim, however, has been raised in this appeal.
    VI. Rivera’s Challenge to Jury Instruction No. 15.
    A. Rivera’s Position. Rivera asserts that if she is not required to
    prove as an element of her wrongful-discharge-in-violation-of-public-
    policy claim that there was not an overriding business justification—as
    we have ruled—then Instruction No. 15 is necessarily flawed.       For the
    most part, Rivera’s challenge to the instruction focuses on the fourth
    sentence of Instruction No. 15. This sentence states, “The reports were
    not the determinative factor if Woodward Resource Center had an
    overriding business reason [i.e. its attendance policy] for terminating
    Rivera’s employment.”
    Rivera claims the fourth sentence improperly invites the jury to
    find that even if the unlawful reason for termination was “the
    determinative factor” under the first three sentences of the instruction,
    the jury could nevertheless conclude Rivera could not prevail because of
    22
    a business reason that trumped, or was substantively more important,
    than the public policy she sought to promote in the wrongful discharge
    claim. According to Rivera, in order for a policy to “override” a wrongful
    termination based on public policy, the asserted overriding policy cannot
    be a business reason, but must be a competing public policy.
    Rivera illustrates her argument by citing Harman, in which a law
    firm terminated a shareholder lawyer for making public comments about
    a 
    client. 344 N.W.2d at 538
    .      The shareholder lawyer claimed the
    discharge violated his First Amendment rights. 
    Id. According to
    Rivera,
    the court found that even if the plaintiff in Harman was fired as a result
    of public comments, the public policy of enforcing ethical obligations to
    clients overrode the alleged public policy in free speech that the plaintiff
    sought to advance. See 
    id. at 540.
    Rivera further points to Smith, a case in which we emphasized a
    mere internal policy of an employer did not substantively trump the
    public policy articulated by the legislature to prevent terminations of
    employees who file workers’ compensation claims.       
    See 464 N.W.2d at 684
    –85. Here, Rivera asserts that an overriding business justification is
    an affirmative defense available only when the employer concedes the
    public policy motivation was the determinative factor in the discharge.
    She argues this narrow concept has no application in this case.
    In support of this argument, Rivera points out that the term
    “overriding business reason” is not defined. According to Rivera, a jury
    could presume the word “override” means “[t]o prevail over; to nullify or
    set aside.” Black’s Law Dictionary 1279 (10th ed. 2014). Rivera asserts
    a jury could read the sentence and erroneously conclude a business
    reason such as attendance could “override” an otherwise unlawful
    discharge.
    23
    Rivera notes that under our caselaw, a factor is determinative if it
    “tips the scales decisively one way or the other” even if it is not the
    predominant reason. 
    DeBoom, 772 N.W.2d at 13
    ; 
    Teachout, 584 N.W.2d at 302
    . However, the language of “overriding business reason” suggests
    that if the business reason is more important, then the plaintiff cannot
    prevail even if the unlawful reason was the determining factor.
    Rivera’s argument can be expressed in mathematical terms.
    Consider, for instance, a situation in which an employer’s decision to
    terminate requires 100 points. Assume that a termination was the result
    of mixed motives of legitimate and illegitimate reasons. Further, assume
    the jury determines 90 points may be assigned to legitimate business
    reasons, and 10 points to unlawful retaliation in violation of public
    policy.   At 100 points, a termination occurs.    Although the legitimate
    business reasons were weightier than the unlawful reasons in this
    hypothetical, a wrongful termination claim would lie because “the
    determining factor,” or the factor that tipped the balance to termination,
    was the unlawful retaliatory motive.
    Rivera concedes the first two sentences in Instruction No. 15 were
    correct statements of law.       However, she argues the fourth sentence
    conflicts with them. When one part of the instruction fairly describes the
    law, while another part incorrectly states the law, Rivera argues reversal
    is required.   See State v. Leins, 
    234 N.W.2d 645
    , 648–49 (Iowa 1975)
    (reversing based on an instruction containing both correct and incorrect
    rules).   Simply because one instruction is correct does not mean,
    according to Rivera, that an incorrect instruction may be ignored. See
    
    DeBoom, 772 N.W.2d at 13
    (reversing based on conflicting causation
    burden of proof instructions).
    24
    Rivera claims DeBoom is instructive in this case. In DeBoom, the
    trial court defined “determining factor” in conflicting and confusing 
    ways. 772 N.W.2d at 12
    –13. In one instruction, the trial court used a higher
    standard, the “tip the scales” standard, but used a lower “motivating
    factor standard” in another. 
    Id. Although one
    of the instructions was
    correct, the inconsistency in the instructions necessitated a new trial.
    
    Id. at 13–14.
    Here, according to Rivera, the district court did the same thing.
    The district court properly stated the determining factor required for
    causation is the reason that tips the scales, but then in the fourth
    sentence instructed the jury that attendance guidelines or other
    legitimate business reasons can override a mandatory duty to report
    abuse. According to Rivera, this is precisely what happened in DeBoom.
    Further, Rivera suggests sentence four improperly put the burden on her
    to prove attendance was not an overriding factor.
    Based on the above, Rivera contends Instruction No. 15 was
    flawed. Rivera believes the fourth sentence conflicts with the previous
    sentences, but further notes that a confusing instruction also warrants
    reversal. See McElroy v. State, 
    637 N.W.2d 488
    , 500 (Iowa 2001) (noting
    we generally reverse when an instruction is confusing); 
    Anderson, 620 N.W.2d at 268
    (emphasizing prejudice results when an instruction
    confuses the jury).
    Finally, Rivera argues the instructional error was prejudicial.
    Rivera contends she offered substantial evidence to support her claim.
    She notes the evidence showed the only written attendance policy
    provided to probationary employees stated that employees were subject
    to termination after ten absences. Further, Rivera offered evidence that
    several   employees   had   more   than   three   absences   during   their
    25
    probationary period and were not terminated. Moreover, Rivera offered
    testimony from an employee who had accrued more than three absences
    during her probationary period and retained her position, but was
    subsequently fired after her next absence following her complaint
    regarding a coworker abusing a resident. Rivera argues that the tipping
    point—the determinative factor that put her in the termination category
    rather than the retention category—was the reporting of abuse.
    B. WRC’s Position. WRC contends Instruction No. 15 was not
    conflicting or confusing even if Rivera does not have the burden of
    showing a lack of an overriding business reason. WRC notes the district
    court in fact agreed with Rivera that she was not required to prove the
    absence of an overriding business reason. According to WRC, nothing in
    the instruction confused the jury, required Rivera to prove her case
    twice, impermissibly shifted the burden of proof, or improperly permitted
    the jury to allow WRC to avoid liability.
    WRC emphasizes the earlier sentences in Instruction No. 15 plainly
    stated that “the determining factor” need not be the main reason
    motivating the decision to terminate employment but need only be the
    reason “which tips the scales decisively one way or the other.” Further,
    WRC emphasizes Instruction No. 15 did not explicitly shift the burden of
    proof.
    WRC does not advance a standard of review for jury instructions,
    or review cases with confusing or conflicting jury instructions.      WRC
    emphasizes, however, that while there is no requirement for trial courts
    to follow jury instructions of the Iowa State Bar Association, courts may
    do so, as long as the instructions fully and fairly embody the law and
    applicable principles.    See State v. Ambrose, 
    861 N.W.2d 550
    , 562–63
    (Iowa 2015) (Wiggins, J., concurring specially) (“[T]he trial court has a
    26
    duty to make sure the [Iowa State Bar Association’s] instruction
    conforms with Iowa law.”).
    In the alternative, WRC argues any error in the instruction was
    harmless.     WRC recognizes that “[e]rrors in jury instructions are
    presumed prejudicial unless the record affirmatively establishes there
    was no prejudice.” Asher v. OB-Gyn Specialists, P.C., 
    846 N.W.2d 492
    ,
    496 (Iowa 2014) (internal quotation marks omitted). WRC argues that
    when nonconstitutional error is involved, “the test of prejudice is whether
    it sufficiently appears that the rights of the complaining party have been
    injuriously affected or that the party has suffered a miscarriage of
    justice.” 
    Id. (internal quotation
    marks omitted).
    WRC contends the essential choice for the jury in this case was
    one of credibility.    The jury had a choice of either believing Rivera or
    believing WRC.        WRC asserts Rivera’s testimony was fraught with
    inconsistency; she offered widely diverging accounts of what occurred.
    Further, WRC notes Rivera lied on her application of employment,
    attended a garage sale when she called in sick, and had at least three
    unscheduled    absences.       WRC    characterizes   Rivera’s   evidence   of
    retaliation as speculation and conjecture, while contending its own
    evidence was overwhelming.
    C. Iowa Caselaw on Jury Instructions. We begin with a brief
    review of Iowa caselaw regarding challenges to jury instructions. First,
    we examine the substantive bases for challenges to jury instructions.
    Then we review application of the harmless-error doctrine to cases in
    which jury instructions, though imperfect, do not form a basis for retrial.
    1. Substantive bases for challenges to jury instructions. The basic
    framework for a successful challenge to jury instructions is well
    established. A material misstatement of the law in a jury instruction, of
    27
    course, ordinarily requires reversal. Waits v. United Fire & Cas. Co., 
    572 N.W.2d 565
    , 575 (Iowa 1997). For example, instructions that improperly
    allocate the burden of proof are subject to reversal. See Koenig v. Koenig,
    
    766 N.W.2d 635
    , 646 (Iowa 2009).             “When jury instructions contain a
    material misstatement of the law, the trial court has no discretion to
    deny a motion for a new trial.” Benn v. Thomas, 
    512 N.W.2d 537
    , 539
    (Iowa 1994).
    We also reverse when instructions are misleading and confusing.
    See, e.g., 
    McElroy, 637 N.W.2d at 500
    . We have said an instruction is
    misleading or confusing if it is “very possible” the jury could reasonably
    have interpreted the instruction incorrectly. Id.; see also State v. Horrell,
    
    260 Iowa 945
    , 954, 
    151 N.W.2d 526
    , 532 (1967) (requiring new trial
    when instructions are “obviously confusing”).          On the other hand, if a
    review of the instructions “leads to the inevitable conclusion that the jury
    could not have misapprehended the issue,” then the challenge is without
    merit. Moser v. Stallings, 
    387 N.W.2d 599
    , 605 (Iowa 1986) (emphasis
    added); Mora v. Savereid, 
    222 N.W.2d 417
    , 422 (Iowa 1974) (same). An
    erroneous jury instruction is not necessarily cured by a later instruction
    correctly stating the law. See 
    Leins, 234 N.W.2d at 648
    –49 (reversing for
    new trial when trial court gave an instruction containing two tests, one
    proper and one improper, and the reviewing court was unable to
    determine which rule the jury applied).
    Our cases illustrate these principles.         For example, in State v.
    Hanes, we noted the trial court gave an incorrect instruction when the
    last sentence of the instruction improperly suggested that the defendant
    need   not   have   specific   intent   at    the   time   of   the   alleged   act,
    notwithstanding previous language in the marshalling instruction that
    provided a correct statement of the law. 
    790 N.W.2d 545
    , 555–56 (Iowa
    28
    2010).     Although remanding on other grounds, we noted the district
    court “should not instruct the jury upon retrial that the defendant’s
    specific intent may exist at any time.” 
    Id. at 556.
    Similarly, in DeBoom,
    we reversed the trial court’s denial of a motion for a new trial in a
    wrongful discharge case when one instruction suggested that the proper
    causation standard was a “determining factor” while another instruction
    used the “motivating factor” 
    standard. 772 N.W.2d at 12
    –14.
    In determining whether an instruction is inaccurate, misleading, or
    confusing, we look to the instructions as a whole and do not require
    perfection. For example, in State v. Pelelo, while we disapproved of an
    additional sentence added to an entrapment instruction, we concluded
    that, nonetheless, the instructions taken as a whole accurately reflected
    the law.    
    247 N.W.2d 221
    , 225 (Iowa 1976).       Similarly, in Robeson v.
    Dilts, we held that although it would have been preferable for an
    instruction to contain specifications of negligence, there was no
    reversible error, as an earlier instruction contained the specifications.
    
    170 N.W.2d 408
    , 415 (Iowa 1969).
    We have also disapproved repetitive instructions that unduly
    emphasize a feature of the case. For instance, repeated emphasis that
    the city was not an insurer for all injuries that occurred on the premises
    was reversible error.    See Clarke v. Hubbell, 
    249 Iowa 306
    , 316, 
    86 N.W.2d 905
    , 911 (1957). On the other hand, when largely repetitive or
    overlapping instructions provide some additional guidance, reversal may
    not be required. See, e.g., Burkhalter v. Burkhalter, 
    841 N.W.2d 93
    , 106–
    07 (Iowa 2013) (finding that “[w]hile the instructions overlapp[ed] to some
    degree . . . a single repetition coupled with a clarification of the law does
    not amount to error”); Andrews v. Struble, 
    178 N.W.2d 391
    , 400 (Iowa
    29
    1970) (holding repetition not proper but permitted when “of some aid in
    clarifying the requirement of proximate cause”).
    2. Harmless-error doctrine. Even when we find an instruction
    legally inadequate, error may be harmless.     In applying the harmless-
    error doctrine we “first guess” the jury. In other words, we try to divine
    what a jury would have done had it been properly instructed, an
    admittedly delicate task that should emphasize humility over hubris.
    We      have   held   the   same    harmless-error    analysis    for
    nonconstitutional trial errors applies in the case of a nonconstitutional
    challenge to jury instructions. 
    Hanes, 790 N.W.2d at 550
    . The burden
    is on the party claiming harmlessness.     See 
    id. We assume
    prejudice
    unless the record affirmatively establishes that there was no prejudice.
    
    Id. at 551.
       Harmless error may be found, for example, if the record
    affirmatively establishes that a party has not been injuriously affected by
    the alleged error or that there has not been a miscarriage of justice. 
    Id. at 550.
    In some cases, application of the harmless-error doctrine is
    relatively clear. For example, when an erroneous instruction makes the
    burden more onerous on the successful party, any error is clearly
    harmless and reversal is not required. See 
    Asher, 846 N.W.2d at 499
    ;
    Hagenow v. Schmidt, 
    842 N.W.2d 661
    , 677 (Iowa 2014). Similarly, we
    have held that when a party succeeds on two theories, one of which is
    properly instructed, any error in the instructions on the improperly
    instructed second theory is harmless.     See Olson v. Prosoco, Inc., 
    522 N.W.2d 284
    , 290 (Iowa 1994).
    We have also found harmless error when one instruction arguably
    omits a legal requirement that is included in subsequent instructions on
    the ground that the instructions are to be read as a whole. Thavenet v.
    30
    Davis, 
    589 N.W.2d 233
    , 237 (Iowa 1999); 
    Robeson, 170 N.W.2d at 414
    .
    When, however, an inadequate instruction relating to the right of
    recovery goes to “the very heart of the case,” it is not rescued by abstract
    instructions elsewhere.   Law v. Hemmingsen, 
    249 Iowa 820
    , 825, 
    89 N.W.2d 386
    , 390–91 (1958).
    D. Analysis of Rivera’s Challenge to the Jury Instruction. The
    differences between the parties centers on the relationship of the fourth
    sentence of Instruction No. 15 to the earlier sentences and the meaning
    of the phrase “overriding business reason.” Rivera claims a jury could
    conclude the fourth sentence trumps or provides an exception to the first
    three sentences.   WRC essentially argues the fourth sentence merely
    restates the correct principles of law provided in the first three sentences
    of Instruction No. 15.
    We first clear underbrush. The fact the district court agreed with
    Rivera’s general proposition that she was not required to prove there was
    no overriding business justification does not necessarily justify the use of
    the instruction. The question before us is not what the court subjectively
    intended. Indeed, the subjective intent of the district court is irrelevant.
    The question is what the language of the instruction would mean to a
    reasonable jury. See State v. Liggins, 
    524 N.W.2d 181
    , 185 (Iowa 1994)
    (“The interpretation of . . . instruction[s] requires the court to determine
    what a reasonable juror could have understood the charge as meaning.”
    (Internal quotation marks omitted.)); see also State v. Winders, 
    359 N.W.2d 417
    , 420 (Iowa 1984); State v. Rinehart, 
    283 N.W.2d 319
    , 322
    (Iowa 1979).
    We further reject Rivera’s argument that the instruction as written
    impermissibly embraces a same-result doctrine, as it relates to the fourth
    sentence of Instruction No. 15. Instruction No. 15 correctly states that
    31
    the unlawful reason must be a tipping point or determining factor in the
    decision. If it is not—if indeed the termination was based upon other
    factors and the unlawful conduct did not tip the balance—then the
    termination is lawful.     To the extent Rivera believes the “same result”
    argument is inappropriate when the unlawful retaliation is not the
    determinative factor in the termination, we do not agree.
    We now turn to the analysis of the language of the instruction.
    Our caselaw instructs that any evaluation of an alleged flaw in a jury
    instruction must be considered based upon the instructions as a whole,
    not piecemeal. See Leaf v. Goodyear Tire & Rubber Co., 
    590 N.W.2d 525
    ,
    536 (Iowa 1999); 
    Thavenet, 589 N.W.2d at 236
    . Taking the instructions
    as a whole, we conclude a reasonable jury would read the sentences in
    Instruction No. 15 harmoniously. The first sentences of Instruction No.
    15 clearly indicate that a determining factor need not be the most
    weighty but must only “tip the scales” of decision-making. This correct
    statement of law is not expressly contradicted by the fourth sentence.
    The fourth sentence can be easily harmonized with the first three by
    interpreting the phrase “overriding business reason” to mean a business
    reason   that   prevents    the   unlawful    retaliation   from    being   the
    determinative factor in the discharge.       Nothing in the fourth sentence
    indicates it is an exception to the previous sentences, but it appears to
    be a simple restatement of the law. “An instruction is not confusing if a
    full and fair reading of all of the instructions leads to the inevitable
    conclusion that the jury could not have misapprehended the issue . . . .”
    
    Moser, 387 N.W.2d at 605
    . Although the fourth sentence provided no
    additional guidance and is not approved, we do not find the additional
    sentence misled or confused the jury in light of the totality of the
    instructions. As a result, Rivera is not entitled to a new trial.
    32
    VII. Conclusion.
    For the above reasons, we conclude Rivera is not entitled to a new
    trial. The judgment of the district court is affirmed.
    AFFIRMED.
    All justices concur except Wiggins and Hecht JJ., who concur in
    part and dissent in part.
    33
    #14–0194, Rivera v. Woodward Res. Ctr.
    WIGGINS, Justice (concurring in part, dissenting in part).
    I agree with the majority’s conclusion that the instruction given
    was erroneous, but depart from the majority’s conclusion that the
    instructional error does not require a new trial. I conclude a new trial is
    required for the following reasons.
    Based on the language used in the instruction, a jury could have
    considered the fourth sentence in Instruction No. 15 to be simply a
    restatement of the law provided in the previous three sentences, as
    Woodward Resource Center (WRC) suggests.          If so, this court might
    characterize the instruction as a redundant but harmless elaboration of
    the law. See, e.g., State v. Chatterson, 
    259 N.W.2d 766
    , 771 (Iowa 1977)
    (noting as a whole, instructions properly set out the elements of the
    crime, and the use of the phrase “ ‘a felony,’ though redundant, was
    merely a contemporary characterization of the statutory crime . . . [and]
    was nothing more than harmless excess verbiage”).
    On the other hand, it is also plausible a jury would read the fourth
    sentence to be an exception to the first three sentences, assuming the
    fourth sentence cannot be redundant and must mean something. It is
    true, of course, the fourth sentence does not use the terms “if” or
    “however,” but jurors are not highly skilled linguists interpreting
    instructions with an eye to grammatical superiority that might be
    employed by legal cognoscenti.        As Chief Judge Traynor wrote many
    years ago:
    The most troublesome instructions are not those that
    are demonstrably incorrect, but those that may be
    incorrectly understood because of their inept language. . . .
    If an instruction on a substantial issue is confusing to a
    reasonable juror, the judgment should be reversed.
    34
    Roger J. Traynor, The Riddle of Harmless Error 74 (1970).
    In my view, a reasonable juror could conclude the fourth sentence
    did in fact provide an exception to the principles of the previous three
    sentences. This is because a juror could reasonably conclude the fourth
    sentence must state a legal principle beyond that contained in the first
    three sentences of the instruction.
    There is an additional problem. The ambiguous use of the phrase
    “overriding business justification” in the fourth sentence complicates the
    relationship between the first three sentences and the fourth sentence.
    The judge did not define this term in the instruction. What exactly is an
    overriding business justification? Does it mean a business reason that is
    more important than the public policy the plaintiff seeks to advance in
    the wrongful discharge claim? Does it mean that a business justification
    may substantively trump or override the public policy asserted by the
    plaintiff by being more important?         If so, the instruction is a plainly
    incorrect statement of law in light of our rejection of the requirement that
    the plaintiff prove a lack of overriding business justification in a wrongful
    discharge suit.
    One thing is clear, however.          Given the majority’s substantive
    ruling in this case, the fourth sentence added nothing of value to
    Instruction No. 15. The first three sentences adequately stated the law.
    The sole question before the court is whether the addition of the fourth
    sentence is sufficiently vague, ambiguous, conflicting, or confusing to
    require a new trial under the facts and circumstances of this case.
    On balance, I find the instruction sufficiently problematic to
    require a new trial. On numerous occasions, this court has held that
    new trials are required when instructions are sufficiently ambiguous to
    undermine our confidence in the verdict, often characterizing the
    35
    instructions as confusing.    See State v. Becker, 
    818 N.W.2d 135
    , 141
    (Iowa 2012) (emphasizing that “prejudice will be found where . . . the
    instruction could reasonably have misled or misdirected the jury”);
    McElroy v. State, 
    637 N.W.2d 488
    , 500 (Iowa 2001); Anderson v. Webster
    City Cmty. Sch. Dist., 
    620 N.W.2d 263
    , 268 (Iowa 2000) (finding
    instructions did not mislead jury but noting that “[p]rejudice results
    when the trial court’s instruction materially misstates the law, confuses
    or misleads the jury or is unduly emphasized”); Mills Cnty. State Bank v.
    Fisher, 
    282 N.W.2d 712
    , 715–16 (Iowa 1979) (noting the instruction was
    “sufficiently ambiguous and confusing to constitute error”); State v.
    Horrell, 
    260 Iowa 945
    , 954, 
    151 N.W.2d 526
    , 532 (1967) (noting an
    “obviously confusing” instruction would constitute reversible error).
    Here, while WRC’s linguistic argument is plausible, I also find
    substantial plausibility in the plaintiff’s interpretation of the instruction.
    I note our cases indicate that when it was possible the jury was confused
    or mislead, reversal is required.     See 
    Becker, 818 N.W.2d at 141
    .         I
    certainly cannot come to the “inevitable conclusion” that the jury
    understood the fourth sentence in Instruction No. 15 as a simple
    restatement of previous concepts in the instruction.           See Moser v.
    Stallings, 
    387 N.W.2d 599
    , 605 (Iowa 1986); cf. 
    McElroy, 637 N.W.2d at 500
    .
    WRC, of course, is correct that harmless instructional error does
    not require reversal. See Asher v. OB-GYN Specialists, P.C., 
    846 N.W.2d 492
    , 499 (Iowa 2014). Most of our harmless error cases, however, do not
    deal with canvassing of the evidence to determine what a jury would have
    done had it been properly instructed. See, e.g., 
    McElroy, 637 N.W.2d at 500
    (noting the instruction could have reasonably been misinterpreted
    by the jury without discussing how the jury would have decided with a
    36
    correct instruction).    Instead, the cases deal with analysis of the
    instructions themselves to determine whether a party has, in fact, been
    injured by the error or if a reasonable jury could have been misled by the
    instructions when taken as a whole.         See, e.g., 
    id. The imperfect
    instructions in these cases were harmless as a matter of law.
    In this case, WRC argues for a different application of our harmless
    error rules. Namely, WRC argues even if the instruction was wrong, a
    jury would have come to the same result in light of the record developed
    at trial. The burden of showing the error is harmless rests with WRC.
    See State v. Hanes, 
    790 N.W.2d 545
    , 550 (Iowa 2010). However, when
    an instruction relates to the core of the case and misleads or confuses
    the jury, reversal is mandated. See Law v. Hemmingsen, 
    249 Iowa 820
    ,
    824–25, 
    89 N.W.2d 386
    , 390–91 (1958); see also Koenig v. Koenig, 
    766 N.W.2d 635
    , 646 (Iowa 2009) (“An instruction that improperly states the
    burden of proof is a material error demanding reversal.”).
    In any event, even if I were to conduct a fact-based harmless error
    analysis here, WRC cannot meet its burden. I note at the outset that the
    district court denied WRC’s motion for summary judgment in this case.
    As a result, there were substantial issues to be tried.
    I further note the instruction challenged in this case is not on the
    periphery of the dispute, but is at its heart. 
    Law, 249 Iowa at 824
    –25,
    89 N.W.2d at 390–91; cf. 
    Anderson, 620 N.W.2d at 267
    (noting an
    instruction that amounted to a comment on the evidence did not warrant
    reversal when clarified by a subsequent instruction).        The instruction
    does not relate to a collateral matter, but to a critical issue in the case.
    Specifically, when is an impermissible reason, the determinative factor,
    sufficient to support a wrongful discharge claim?            A flawed core
    37
    instruction in a case that did not survive summary judgment is not a
    good candidate for fact-driven harmless error analysis.
    WRC summarizes the evidence offered at trial that would support a
    jury verdict in its favor.    WRC stresses the testimony of Rivera was
    inconsistent and generally incredible, while the testimony of WRC
    administrators clearly supported WRC’s theory that any report made by
    Rivera of abusive conduct was not a determinative factor in its decision
    to discharge. Clearly, WRC offered substantial evidence in support of its
    claim that it did not wrongfully discharge her.
    We cannot conduct a balanced review of the facts by solely
    considering WRC’s evidence. 4        Rivera offered evidence that relates
    directly to the instructional issue posed in this appeal. She presented
    evidence that only two attendance policies were provided to probationary
    employees: one limiting absences to ten occurrences per year and one
    providing that when probationary employees experienced three absences
    within six months they were sometimes terminated, but sometimes were
    not terminated. She presented evidence that one probationary employee
    was   not   terminated    after   three    absences,   but   was   immediately
    terminated after a fourth absence and after she complained about the
    care at WRC.      A reasonable jury could conclude, based on Rivera’s
    evidence, that three absences did not automatically lead to discharge and
    that other factors were relevant in determining whether an employee was
    to be terminated.       In light of her strong job performance, Rivera
    presented a plausible case—one that survived summary judgment—that
    the “tipping point” was her complaint regarding the care at WRC. In light
    4In addition, evidence excluded from trial should not be considered in the
    harmless error analysis.
    38
    of the entire record, including the denial of the motion for summary
    judgment and the nature of the offending instruction, I cannot conclude
    WRC met its burden in showing the confusing instruction was harmless.
    Hecht, J., joins this concurrence in part and dissent in part.