Service Empl. Internat. v. Douglas Cty. Sch. Dist. ( 2013 )


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  •                      Nebraska Advance Sheets
    SERVICE EMPL. INTERNAT. v. DOUGLAS CTY. SCH. DIST.	755
    Cite as 
    286 Neb. 755
    Service Employees International Union (AFL-CIO)
    Local 226, appellant and cross-appellee, v.
    Douglas County School District 001,
    appellee and cross-appellant.
    ___ N.W.2d ___
    Filed November 1, 2013.       No. S-13-009.
    1.	 Commission of Industrial Relations: Appeal and Error. In reviewing an
    appeal from the Commission of Industrial Relations in a case involving wages
    and conditions of employment, an order or decision of the commission may be
    modified, reversed, or set aside by an appellate court on one or more of the fol-
    lowing grounds and no other: (1) if the commission acts without or in excess of
    its powers, (2) if the order was procured by fraud or is contrary to law, (3) if the
    facts found by the commission do not support the order, and (4) if the order is
    not supported by a preponderance of the competent evidence on the record con-
    sidered as a whole.
    2.	 Labor and Labor Relations. Nebraska’s Industrial Relations Act requires parties
    to negotiate only mandatory subjects of bargaining.
    3.	 ____. Mandatory subjects of bargaining include the scale of wages, hours of
    labor, or conditions of employment.
    4.	 ____. Management prerogatives, such as the right to hire, to maintain order and
    efficiency, to schedule work, and to control transfers and assignments, are not
    mandatory subjects of bargaining.
    5.	 ____. A matter which is of fundamental, basic, or essential concern to an employ-
    ee’s financial and personal concern may be considered as involving working
    conditions and is mandatorily bargainable even though there may be some minor
    influence on educational policy or management prerogative.
    6.	 ____. Vacation is a mandatory subject of bargaining.
    7.	 Commission of Industrial Relations: Labor and Labor Relations. An
    employer subject to the Industrial Relations Act may implement unilateral
    changes to mandatory subjects of bargaining only when three conditions have
    been met: (1) The parties have bargained to impasse, (2) the terms and conditions
    implemented were contained in a final offer, and (3) the implementation occurred
    before a petition regarding the year in dispute is filed with the Commission of
    Industrial Relations.
    8.	 Labor and Labor Relations: Employment Contracts: Waiver. A clear and
    unmistakable waiver of a statutory right may be found in the express language of
    a collective bargaining agreement, or it may even be implied from the structure
    of an agreement and the parties’ course of conduct.
    9.	 Labor and Labor Relations: Waiver: Proof. An employer bears the burden of
    establishing that a clear and unmistakable waiver of a statutory right in a collec-
    tive bargaining agreement has occurred.
    10.	 ____: ____: ____. To establish waiver of the right to bargain by union inaction,
    the employer must first show that the union had clear notice of the employer’s
    intent to institute the change sufficiently in advance of actual implementation so
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    756	286 NEBRASKA REPORTS
    as to allow a reasonable opportunity to bargain about the change. In addition, the
    employer must show that the union failed to make a timely bargaining request
    before the change was implemented.
    11.	 Labor and Labor Relations: Notice. Once a union has notice of a proposed
    change in a mandatory bargaining subject, it must make a timely request to bar-
    gain. A union cannot charge an employer with refusal to negotiate when it has
    made no attempts to bring the employer to the bargaining table.
    12.	 Commission of Industrial Relations: Courts: Evidence: Appeal and Error.
    The Nebraska Supreme Court will consider the fact that the Commission of
    Industrial Relations, sitting as the trier of fact, saw and heard the witnesses and
    observed their demeanor while testifying and will give weight to the commis-
    sion’s judgment as to credibility.
    13.	 Appeal and Error. An appellate court is not obligated to engage in an analysis
    that is not necessary to adjudicate the case and controversy before it.
    Appeal from the Commission of Industrial Relations.
    Affirmed.
    Timothy S. Dowd, of Dowd, Howard & Corrigan, L.L.C.,
    for appellant.
    David J. Kramer and D. Ashley Robinson, of Baird Holm,
    L.L.P., for appellee.
    Heavican, C.J., Wright, Connolly, Stephan, McCormack,
    and Cassel, JJ.
    Wright, J.
    I. NATURE OF CASE
    Service Employees International Union (AFL-CIO) Local
    226 (Local 226) appeals from the finding of the Commission of
    Industrial Relations (CIR) that Douglas County School District
    001 (District) did not commit a prohibited practice under the
    version of the Industrial Relations Act (IRA) then in effect,
    Neb. Rev. Stat. §§ 48-801 to 48-838 (Reissue 2010). Local 226
    argues that the District unilaterally changed its vacation accrual
    policy, declared the issue nonnegotiable, and failed to bargain
    on a mandatory subject of bargaining.
    We conclude the District unilaterally changed its vacation
    accrual policy but presented Local 226 with opportunities
    to give input on the policy changes and request negotiations
    before implementation of the changes. Local 226 failed to take
    advantage of those opportunities. It negotiated and signed new
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    SERVICE EMPL. INTERNAT. v. DOUGLAS CTY. SCH. DIST.	757
    Cite as 
    286 Neb. 755
    collective bargaining agreements (CBA’s) for the school year
    in which the new vacation accrual policy would take effect
    without requesting negotiations on the new policy. In doing so,
    Local 226 waived its right to negotiate on the matter of vaca-
    tion accrual. We affirm the order of the CIR.
    II. SCOPE OF REVIEW
    [1] In reviewing an appeal from the CIR in a case involving
    wages and conditions of employment, an order or decision of
    the CIR may be modified, reversed, or set aside by an appel-
    late court on one or more of the following grounds and no
    other: (1) if the CIR acts without or in excess of its powers,
    (2) if the order was procured by fraud or is contrary to law,
    (3) if the facts found by the CIR do not support the order,
    and (4) if the order is not supported by a preponderance of
    the competent evidence on the record considered as a whole.
    Employees United Labor Assn. v. Douglas Cty., 
    284 Neb. 121
    ,
    
    816 N.W.2d 721
    (2012).
    III. FACTS
    Local 226 is the duly certified exclusive bargaining agent
    for the District’s office personnel, educational paraprofes-
    sionals, and operations division. For the 2010-11 and 2011-12
    school years, Local 226 and the District entered into separate
    CBA’s for each of those three bargaining units. The current
    dispute over vacation accrual arose while Local 226 and the
    District were negotiating the CBA’s for the 2011-12 school
    year, but during the time the CBA’s for the 2010-11 school
    year were still in effect.
    For the past 20 years, article 9 of the relevant CBA’s has
    set forth the amount of vacation to which each employee
    was entitled. But the CBA’s have never “outlined the manner
    and method of accrual and distribution of the agreed upon
    amount of vacation.” Rather, at all times relevant to this case,
    the distribution of vacation was governed by section 4.21 of
    the District’s “Policies and Regulations.” The entire policies
    and regulations were incorporated by reference into article 2
    of the CBA’s. Article 2 also provided that the District could
    make changes to the policies and regulations at any time.
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    The District has made changes to section 4.21 at least 10
    times over the past 52 years, both with and without Local
    226’s approval.
    When the District and Local 226 entered into the CBA’s for
    the 2010-11 school year, section 4.21 of the policies and regu-
    lations provided that employees were granted their full vaca-
    tion allotment for the year in a single lump sum on August 1,
    2011—the start of the school year. If an employee terminated
    employment or transferred to a position in which he or she was
    not eligible for vacation, any unused vacation days would be
    paid out in the final paycheck. If a new employee was hired
    or an employee transferred to a vacation-eligible position after
    August 1, he or she would receive prorated vacation days
    based on the date of hire or transfer.
    Both parties have stipulated that at their meetings on
    February 9 and March 2, 2011, the District advised Local 226
    that the District was “going to make” changes to section 4.21.
    Under the proposed changes to section 4.21, employees would
    accrue vacation throughout the school year instead of being
    granted their vacation allotment in a single lump sum at the
    beginning of the school year.
    On May 16, 2011, the Omaha Public Schools Board of
    Education adopted the amendments to section 4.21, to be effec-
    tive August 1. Local 226 did not appear at the board of educa-
    tion meeting to oppose the changes.
    On May 17, 2011, the members of Local 226 were notified
    of the changes adopted by the board of education. In response,
    Local 226 sent a letter to the District requesting that it “cease
    and desist from implementing [the vacation accrual] policy.”
    Local 226 characterized the District’s action in implementing
    the new policy as a “unilateral change of a mandatory subject
    of bargaining[,] which is a prohibited practice.” It asked the
    District to “advise as to [the District’s] intentions within the
    next seven (7) calendar days.”
    In a reply letter, the District asserted that it “has the right to
    change its Policies and Regulations so long as those policies
    don’t violate the terms of the [ CBA’s]” and that the amend-
    ments to section 4.21 were within its authority under the CBA’s
    and not in violation of the provisions of the CBA’s addressing
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    vacation. The District closed by noting, “We remain open . . .
    to working with Local 226 to address any concerns about the
    practical application of the revised policy.”
    Beginning in February 2011 and continuing throughout the
    summer, the District and Local 226 were engaged in substan-
    tive negotiations of the CBA’s for the 2011-12 school year.
    During those negotiations, Local 226 did not propose any
    changes to the new vacation accrual policy that was scheduled
    to take effect on August 1.
    On September 13 and October 10 and 19, 2011, the District
    and Local 226 signed the CBA’s for the 2011-12 school year
    for the operations division, paraprofessionals, and office per-
    sonnel, respectively. The CBA’s were effective retroactively to
    August 1, 2011.
    In January 2012, following implementation of the new vaca-
    tion accrual policy, Local 226 filed petitions with the CIR on
    behalf of each of the three bargaining groups. It alleged that
    the District had engaged in “a prohibited practice of bad-faith
    bargaining in violation of Nebraska Revised Statute §48-824(1)
    (Reissue 2004).” Local 226 asserted that the District “failed
    and refused to negotiate or agree to negotiate regarding the
    [v]acation [a]ccrual [p]olicy and said unilateral action on the
    part of the [District] constitutes a change in the terms and con-
    ditions of employment with respect to a mandatory subject of
    collective bargaining.” It prayed that the CIR order the District
    “to cease and desist from its continued unilateral actions”
    and to maintain the previous vacation accrual policy “until or
    unless [Local 226] has agreed to the same” or the CIR issued
    an order altering the obligations of the parties. The District
    filed answers generally denying that it had committed a pro-
    hibited practice.
    The CIR held a consolidated trial on the petitions. The par-
    ties adduced evidence regarding whether past practices between
    the parties created an implied contractual term regarding the
    manner and method of vacation accrual, whether Local 226
    had an obligation to initiate negotiations after learning of the
    new vacation accrual policy, and whether Local 226 consented
    to the new vacation accrual policy by entering into the CBA’s
    for the 2011-12 school year, among other things. Significantly,
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    the parties presented differing accounts of the level to which
    the District involved Local 226 in the development of the new
    vacation accrual policy.
    The District adduced evidence that it notified Local 226
    and the other unions that it was considering making changes
    to section 4.21 of the policies and regulations. Dr. Germaine
    Huber, chief negotiator for the board of education, testified
    that she “talked with all the unions” about the new vacation
    accrual policy. According to Huber, during those discussions,
    the unions expressed concerns about not having vacation early
    in the school year, in response to which the District incorpo-
    rated into the new policy the option of applying for an advance-
    ment of up to 5 vacation days. As to Local 226, Huber did not
    specifically describe the District as having “negotiated” with
    Local 226 over the changes to section 4.21, but maintained that
    they “had discussions.”
    Local 226 presented a differing account of the events lead-
    ing to adoption of the new vacation accrual policy. Suzanne
    Anderson, president of Local 226, testified that at the February
    9 and March 2, 2011, meetings, the District told Local 226
    that the vacation accrual policy “was going to happen” and
    “was going to go through.” According to Anderson, Local
    226 protested the proposed changes and told the District that
    it “wanted to negotiate [the new policy],” but the District
    “said it was not negotiable.” Anderson conceded that the
    District allowed Local 226 to provide feedback on the issue
    of advance vacation days, but asserted that advancement was
    the only issue about which it was given the opportunity to
    provide feedback. She said that Local 226 did not make any
    suggestions at the meetings other than voicing that Local 226
    “wanted to negotiate [the new policy] because we did not
    want that.”
    On December 6, 2012, the CIR entered an order finding
    that the District had not engaged in a prohibited practice. It
    first concluded that the District had “a duty to bargain over
    any changes to the vacation accrual policy” because vacation
    leave was a mandatory subject of bargaining under the IRA.
    The CIR then turned to the question whether the District had
    fulfilled its duty to bargain, noting that “the evidence as a
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    whole does not support the notion that [the District] was not
    willing to have discussions with [Local 226] about the vacation
    accrual policy.” Rather, the CIR found, based on the evidence,
    that the District had given Local 226 “sufficient notice” of
    the proposed change such that Local 226 had an obligation
    to “make a timely request to bargain.” It found the evidence
    demonstrated that Local 226 failed to negotiate to impasse on
    the matter. Therefore, the CIR found that Local 226 had failed
    to prove that the District committed a prohibited practice under
    § 48-824(1) and dismissed all three petitions.
    Local 226 timely appeals, and the District cross-appeals.
    Pursuant to our statutory authority to regulate the dockets of
    the appellate courts of this state, we moved the case to our
    docket. See Neb. Rev. Stat. § 24-1106(3) (Reissue 2008).
    IV. ASSIGNMENTS OF ERROR
    Local 226 generally assigns that the CIR was clearly wrong
    and acted contrary to law in finding that the District did not
    commit a prohibited practice by unilaterally implementing
    changes to section 4.21 of the policies and regulations. More
    specifically, Local 226 assigns that the CIR was clearly wrong
    and acted contrary to law in finding that Local 226 had an
    obligation to bargain to impasse over the District’s unilateral
    change to a mandatory subject of bargaining.
    On cross-appeal, the District assigns that the CIR erred
    in failing to rule that (1) the terms of the CBA’s clearly and
    unambiguously granted the District the right to unilaterally
    modify section 4.21, (2) the District has an established past
    practice of modifying section 4.21 during the term of the
    CBA’s, and (3) the District’s established practice of modifying
    section 4.21 formed an implied contract term.
    V. ANALYSIS
    1. P rohibited P ractice
    (a) Background
    Local 226’s appeal raises one fundamental question: whether
    the District committed a prohibited practice under § 48-824(1)
    by changing section 4.21, and thereby adopting a new vacation
    accrual policy, without negotiating with Local 226. Section
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    48-824(1) provided that “[i]t is a prohibited practice for any
    employer, employee, employee organization, or collective-­
    bargaining agent to refuse to negotiate in good faith with
    respect to mandatory topics of bargaining.”
    [2-6] The IRA requires parties to negotiate only mandatory
    subjects of bargaining. Scottsbluff Police Off. Assn. v. City of
    Scottsbluff, 
    282 Neb. 676
    , 
    805 N.W.2d 320
    (2011). Mandatory
    subjects of bargaining include “‘the scale of wages, hours of
    labor, or conditions of employment.’” Douglas Cty. Health Ctr.
    Sec. Union v. Douglas Cty., 
    284 Neb. 109
    , 114, 
    817 N.W.2d 250
    , 255 (2012) (quoting § 48-818). “[M]anagement preroga-
    tives, such as the right to hire, to maintain order and efficiency,
    to schedule work, and to control transfers and assignments,
    are not mandatory subjects of bargaining.” Scottsbluff Police
    Off. Assn. v. City of 
    Scottsbluff, 282 Neb. at 683
    , 805 N.W.2d
    at 328. A matter which is of fundamental, basic, or essential
    concern to an employee’s financial and personal concern may
    be considered as involving working conditions and is manda-
    torily bargainable even though there may be some minor influ-
    ence on educational policy or management prerogative. Metro.
    Tech. Com. Col. Ed. Assn. v. Metro. Tech. Com. Col. Area, 
    203 Neb. 832
    , 
    281 N.W.2d 201
    (1979). Vacation is a mandatory
    subject of bargaining. See, e.g., El Paso Elec. Co. v. N.L.R.B.,
    
    681 F.3d 651
    (5th Cir. 2012); Tanforan Park Food Purveyors
    Council v. N. L. R. B., 
    656 F.2d 1358
    (9th Cir. 1981); Adams
    Potato Chips, Inc. v. N. L. R. B., 
    430 F.2d 90
    (6th Cir. 1970).
    See, also, FOP Lodge 41 v. County of Scotts Bluff, 13 C.I.R.
    270 (2000).
    [7] Because of § 48-824(1),
    an employer subject to the IRA may implement unilat-
    eral changes to mandatory subjects of bargaining only
    when three conditions have been met: (1) The parties
    have bargained to impasse, (2) the terms and conditions
    implemented were contained in a final offer, and (3) the
    implementation occurred before a petition regarding the
    year in dispute is filed with the CIR.
    Scottsbluff Police Off. Assn. v. City of 
    Scottsbluff, 282 Neb. at 686
    , 805 N.W.2d at 330. If any of these three conditions
    are not met, then the employer’s unilateral implementation of
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    SERVICE EMPL. INTERNAT. v. DOUGLAS CTY. SCH. DIST.	763
    Cite as 
    286 Neb. 755
    changes in mandatory bargaining topics is a per se violation of
    the duty to bargain in good faith. 
    Id. With that
    background, we now turn to the facts and issues
    in the instant case.
    (b) District’s Obligation to
    Negotiate in Good Faith
    We first note that the District acted within its authority under
    the CBA’s to amend section 4.21 of the policies and regulations
    and thereby adopt a new vacation accrual policy. Article 2 of
    the CBA’s for the 2010-11 school year provided:
    Each and every provision of the Policies and
    Regulations incorporated by specific reference herein,
    and made a part of this Agreement, shall be binding upon
    both parties hereto, in their language as of the date hereof,
    throughout the term of this Agreement, notwithstanding
    that the School District may act to change Policies and
    Regulations after the effective date of this Agreement.
    Under that language, the District had the authority to make
    changes to the policies and regulations while the CBA’s for
    the 2010-11 school year were in effect, but such changes,
    although permissible, would not be binding upon Local 226
    for the 2010-11 school year. Rather, the policies and regula-
    tions in effect when the parties entered into the CBA’s would
    continue to bind the parties “in their language as of the date
    hereof, throughout the term of this Agreement.” Thus, under
    the CBA’s with Local 226, the District had the authority to
    make changes to the policies and regulations but could not
    enforce those changes against Local 226 until after July 31,
    2011. The District acted pursuant to that authority when it pro-
    posed and adopted changes to section 4.21 of the policies and
    regulations for the 2011-12 school year. Both parties agree that
    the District did not implement the changes to section 4.21 until
    August 1, 2011—after the CBA’s for the 2010-11 school year
    had expired.
    However, despite acting within its powers under the CBA’s,
    the District was still required by the IRA to negotiate regarding
    the new vacation accrual policy, because it related to a manda-
    tory subject of bargaining. Therefore, under § 48-824(1), the
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    District was required to negotiate in good faith with Local 226
    about the new vacation accrual policy.
    The District and Local 226 agree that no formal negotia-
    tions on the new vacation accrual policy took place before the
    new policy was implemented on August 1, 2011. The parties
    also agree that the District was not permitted to unilaterally
    implement the new policy on the ground that they had negoti-
    ated to impasse, because the parties had not in fact negotiated
    to impasse. Accordingly, unless Local 226 waived its right to
    negotiate, the District had committed a prohibited practice and
    a per se violation of its duty to bargain in good faith by imple-
    menting the new vacation accrual policy without first engaging
    in negotiations with the union.
    (c) Waiver by Local 226
    (i) Preliminary Matters
    Generally, the possibility of waiver can be considered only
    after we have determined that the dispute was not covered by
    the relevant collective bargaining agreement. See Douglas Cty.
    Health Ctr. Sec. Union v. Douglas Cty., 
    284 Neb. 109
    , 
    817 N.W.2d 250
    (2012). In conducting such an inquiry, we examine
    whether the collective bargaining agreement “‘fully defines the
    parties’ rights’” as to the topic in issue. 
    Id. at 117,
    817 N.W.2d
    at 257.
    In the instant case, the rights of the parties were not defined
    by the CBA’s. The implementation of the new vacation accrual
    policy was effective August 1, 2011. The CBA’s expired July
    31, 2012. It is true that by law, the expired CBA’s would
    continue to govern the parties’ obligations to one another.
    See Employees United Labor Assn. v. Douglas Cty., 
    284 Neb. 121
    , 
    816 N.W.2d 721
    (2012). But the parties are governed by
    the expired CBA’s only to the extent that the conditions of
    employment previously set forth need to be maintained. See 
    id. Because the
    alleged prohibited practice would have occurred
    after the CBA’s had expired, there were no agreements which
    would determine the parties’ rights regarding vacation accrual.
    It is thus appropriate to consider if Local 226 waived its right
    to bargain regarding the accrual of vacation. See Douglas Cty.
    Health Ctr. Sec. Union v. Douglas 
    Cty., supra
    .
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    (ii) Finding of Waiver
    in CIR’s Order
    On appeal, Local 226 does not directly address the question
    of waiver. Local 226 asserts that the CIR determined “Local
    226 did not waive its right to bargain” and based its decision
    that the District did not commit a prohibited practice on Local
    226’s failure to bargain to impasse. See brief for appellant at
    14. At the end of its order, the CIR stated that “[t]he reasons
    given for [Local 226’s] failure to bargain to impasse . . . do
    not constitute a convincing basis for [Local 226’s] claim that
    [the District] committed a prohibited practice.” Based on
    that statement, Local 226 argues that it should not have been
    required to negotiate to impasse before filing petitions against
    the District. That focus on the CIR’s mention of negotiating to
    impasse is unfounded.
    Considering the CIR’s order in its entirety, it is clear that the
    decision was based upon Local 226’s failure to request nego-
    tiations. In its order, the CIR stated that the District provided
    notice to Local 226 of the proposed changes to the vacation
    accrual policy, at which point Local 226 became obligated to
    request negotiations if it objected to the changes. Before reach-
    ing the point at which bargaining to impasse was an issue for
    either party, Local 226 had to request negotiations. The CIR
    found that Local 226 did not.
    Once the CIR concluded that Local 226 failed to even
    request negotiations, any discussion of negotiating to impasse
    was extraneous to the CIR’s ultimate conclusion. Indeed, it was
    only in rebutting Local 226’s allegations why it did not request
    negotiations that the CIR addressed the matter of impasse.
    Implicit in the CIR’s order was that Local 226 waived its right
    to bargain on the issue of vacation accrual by failing to request
    negotiations. As this finding was the basis of the CIR’s deci-
    sion that the District did not commit a prohibited practice, it is
    this finding of waiver that we review on appeal.
    (iii) Legal Requirements
    for Waiver
    [8,9] It is possible for employees or their representatives to
    waive the right to bargain on mandatory subjects of bargaining.
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    A clear and unmistakable waiver of a statutory right may
    be found in the express language of a collective bargaining
    agreement, or it may even be implied from the structure of
    an agreement and the parties’ course of conduct. Hogelin v.
    City of Columbus, 
    274 Neb. 453
    , 
    741 N.W.2d 617
    (2007).
    An employer bears the burden of establishing that a clear and
    unmistakable waiver of a statutory right in a collective bargain-
    ing agreement has occurred. 
    Id. In the
    instant case, the District
    had to establish that Local 226 waived its right to bargain on
    the change in the vacation accrual policy.
    Although there is little Nebraska case law discussing waiver
    of the right to bargain under the IRA, the federal courts
    have extensively discussed waiver under the National Labor
    Relations Act, 29 U.S.C. §§ 151 to 169 (2006) (NLRA). The
    same standard for waiver exists under the IRA and the NLRA.
    Compare Hogelin v. City of 
    Columbus, supra
    , with Intern.
    Broth. of Elec. Workers v. N.L.R.B., 
    706 F.3d 73
    (2d Cir. 2013).
    And “decisions under the [NLRA] are helpful in interpreting
    the IRA, but are not binding.” Scottsbluff Police Off. Assn.
    v. City of Scottsbluff, 
    282 Neb. 676
    , 681, 
    805 N.W.2d 320
    ,
    327 (2011).
    The NLRA provides that a union can waive its right to bar-
    gain by failing to request bargaining or otherwise inform the
    employer that the union wishes to bargain. Shortly after the
    NLRA was enacted, the U.S. Supreme Court explained that
    an employer cannot be held liable when the employees have
    failed to act:
    Since there must be at least two parties to a bargain and
    to any negotiations for a bargain, it follows that there can
    be no breach of the statutory duty by the employer—when
    he has not refused to receive communications from his
    employees—without some indication given to him by
    them or their representatives of their desire or willingness
    to bargain. In the normal course of transactions between
    them, willingness of the employees is evidenced by their
    request, invitation, or expressed desire to bargain, com-
    municated to their employer.
    However desirable may be the exhibition by the
    employer of a tolerant and conciliatory spirit in the
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    settlement of labor disputes, we think it plain that the
    statute does not compel him to seek out his employees
    or request their participation in negotiations for purposes
    of collective bargaining . . . . The employer cannot,
    under the statute, be charged with refusal of that which
    is not proffered.
    Labor Board v. Columbian Co., 
    306 U.S. 292
    , 297-98, 59 S.
    Ct. 501, 
    83 L. Ed. 660
    (1939).
    Since the NLRA’s enactment, many of the federal cir-
    cuit courts have similarly recognized the possibility of a
    waiver by employees or their representatives of the right
    to bargain on mandatory subjects of bargaining. See, e.g.,
    Intern. Broth. of Elec. Workers v. 
    N.L.R.B., supra
    ; N.L.R.B. v.
    Solutia, Inc., 
    699 F.3d 50
    (1st Cir. 2012); N.L.R.B. v. Seaport
    Printing & Ad Specialties, 
    589 F.3d 812
    (5th Cir. 2009); Regal
    Cinemas, Inc. v. N.L.R.B., 
    317 F.3d 300
    (D.C. Cir. 2003);
    N.L.R.B. v. Oklahoma Fixture Co., 
    79 F.3d 1030
    (10th Cir.
    1996); N.L.R.B. v. Unbelievable, Inc., 
    71 F.3d 1434
    (9th Cir.
    1995); Intermountain Rural Elec. Ass’n v. N.L.R.B., 
    984 F.2d 1562
    (10th Cir. 1993); N.L.R.B. v. Pinkston-Hollar Const.
    Services, Inc., 
    954 F.2d 306
    (5th Cir. 1992); N.L.R.B. v. Island
    Typographers, Inc., 
    705 F.2d 44
    (2d Cir. 1983); N. L. R. B.
    v. Alva Allen Industries, Inc., 
    369 F.2d 310
    (8th Cir. 1966);
    N. L. R. B. v. Rural Electric Company, 
    296 F.2d 523
    (10th
    Cir. 1961). Under that case law, “the duty of an employer to
    recognize and bargain collectively with a union as the collec-
    tive bargaining representative of employees does not arise until
    after the union requests the employer to bargain.” N. L. R. B.
    v. Rural Electric 
    Company, 296 F.2d at 524
    . The employer
    must give the union notice that it intends to make changes
    to the conditions of employment. See, e.g., Intern. Broth. of
    Elec. Workers v. 
    N.L.R.B., supra
    ; N.L.R.B. v. Unbelievable,
    
    Inc., supra
    ; N.L.R.B. v. Island Typographers, 
    Inc., supra
    . But
    once notice is given, it places an obligation upon the union to
    request bargaining so as not to waive the employees’ right to
    bargain. See, e.g., N.L.R.B. v. Solutia, 
    Inc., supra
    ; N.L.R.B. v.
    Seaport Printing & Ad 
    Specialties, supra
    ; Regal Cinemas, Inc.
    v. 
    N.L.R.B., supra
    ; N.L.R.B. v. Oklahoma Fixture Co., supra;
    N.L.R.B. v. Unbelievable, 
    Inc., supra
    ; Intermountain Rural
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    768	286 NEBRASKA REPORTS
    Elec. Ass’n v. 
    N.L.R.B., supra
    ; N.L.R.B. v. Pinkston-Hollar
    Const. Services, 
    Inc., supra
    ; N.L.R.B. v. Island Typographers,
    
    Inc., supra
    ; N. L. R. B. v. Alva Allen Industries, 
    Inc., supra
    ;
    N. L. R. B. v. Rural Electric 
    Company, supra
    .
    The union must act with “due diligence in requesting bar-
    gaining.” N.L.R.B. v. Pinkston-Hollar Const. Services, 
    Inc., 954 F.2d at 310
    . Any less diligence amounts to a waiver by the
    bargaining representative of its right to bargain. 
    Id. “[A] union
    cannot simply ignore its responsibility to initiate bargaining
    over subjects of concern and thereafter accuse the employer
    of violating its statutory duty to bargain.” N.L.R.B. v. Island
    Typographers, 
    Inc., 705 F.2d at 51
    . However, “‘[a] union is
    “not required to go through the motions of requesting bargain-
    ing[]” . . . if it is clear that an employer has made its decision
    and will not negotiate.’” N.L.R.B. v. Solutia, 
    Inc., 699 F.3d at 64
    (alteration and ellipsis in original) (quoting Regal Cinemas,
    Inc. v. 
    N.L.R.B., supra
    ).
    [10] Under federal case law, as under Nebraska law, the bur-
    den of proving waiver rests on the employer:
    To establish waiver of the right to bargain by union
    inaction, the employer must first show that the union
    had “clear notice of the employer’s intent to institute the
    change sufficiently in advance of actual implementation
    so as to allow a reasonable opportunity to bargain about
    the change.” . . . In addition, the employer must show
    that “the union failed to make a timely bargaining request
    before the change was implemented.”
    N.L.R.B. v. Unbelievable, 
    Inc., 71 F.3d at 1440-41
    (citations
    omitted) (quoting American Distributing Co., Inc. v. N.L.R.B.,
    
    715 F.2d 446
    (9th Cir. 1983) (amended and superseded on
    denial of rehearing)). See, also, Hogelin v. City of Columbus,
    
    274 Neb. 453
    , 
    741 N.W.2d 617
    (2007). Nonetheless, it
    is important to remember that “[t]he negotiations of [an
    employer] must be measured in the light of surrounding cir-
    cumstances, which include corresponding attempts at good
    faith negotiation by the Union.” N. L. R. B. v. Alva Allen
    Industries, Inc., 
    369 F.2d 310
    , 321 (8th Cir. 1966). As the
    Eighth Circuit has explained,
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    [a] union cannot charge an employer with refusal to nego-
    tiate when it has made no attempts to bring the employer
    to the bargaining table. . . . Nor is a union in a good
    position to charge an employer with bargaining in bad
    faith when the union itself has exhibited little, if any, real
    desire to reach a bona fide contract benefitting the mem-
    bers of the bargaining unit which it, by law, is required
    to represent.
    
    Id. (citations omitted).
    (iv) Application to
    Present Appeal
    [11] In its order, the CIR concluded that Local 226 waived
    its right to bargain on the subject of vacation accrual, because
    Local 226 had not made a timely request to bargain. In doing
    so, the CIR followed its holding in F.O.P., Lodge No. 21 v. City
    of Ralston, NE, 12 C.I.R. 59, 66 (1994) (quoting N. L. R. B. v.
    Alva Allen Industries, 
    Inc., supra
    ), in which the CIR adopted
    the following proposition:
    Once a union has notice of a proposed change in a man-
    datory bargaining subject, it must make a timely request
    to bargain. “A union cannot charge an employer with
    refusal to negotiate when it has made no attempts to bring
    the employer to the bargaining table.”
    As noted above, this proposition is widely enforced through-
    out the federal courts. We agree with the CIR’s adoption and
    continued enforcement of waiver in such a fashion.
    Applying that standard of waiver to the facts in this case,
    we conclude that after receiving notice of the District’s
    intended changes to the vacation accrual policy, Local 226’s
    failure to make a timely request to bargain over the new
    vacation accrual policy changes constituted a waiver of Local
    226’s right to bargain on what would otherwise be a man-
    datory subject of bargaining. By showing that Local 226
    received notice of the District’s plans to implement a new
    vacation accrual policy but failed to request bargaining on the
    issue, the District proved a clear and unmistakable waiver by
    Local 226.
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    770	286 NEBRASKA REPORTS
    a. Notice to Local 226
    The evidence adduced before the CIR clearly showed that
    the District provided sufficient notice to Local 226 that it
    intended to make changes to the vacation accrual policy.
    Huber testified that she notified Local 226 and the other
    unions that the board of education was considering mak-
    ing changes to section 4.21 of the policies and regulations.
    She explained that the provision of the new policy allowing
    employees to take up to 5 days advance vacation was explic-
    itly added to address concerns raised by the unions when she
    talked with them.
    Anderson, president of Local 226, agreed that the District
    gave her “advanced information about policies and regula-
    tions that [it was] considering making changes to,” including
    the changes to the vacation accrual policy in 2011. She also
    confirmed Huber’s testimony that the provision allowing for
    the advancement of vacation days was “a result of issues and
    concerns expressed by Local 226 to [the District] as [it was]
    contemplating changes to the policy.” In addition to providing
    advance notice that it was contemplating changes to section
    4.21, the District held two meetings with Local 226 to discuss
    the changes. As noted above, the parties stipulated that on
    February 9 and March 2, 2011, the District met with Local 226
    “to advise Local 226 of the changes [the District] was going to
    make” to the vacation accrual policy.
    The evidence demonstrated that after learning of the pro-
    posed changes, Local 226 had multiple opportunities to request
    negotiations with the District. The District engaged Local
    226 and the other unions in discussions about changes to
    the vacation accrual policy prior to adopting those changes.
    The District contacted the unions with advance information
    about the possible changes and held meetings in February and
    March 2011.
    Anderson testified that at those meetings, the policy was
    presented as “nonnegotiable.” However, that testimony is con-
    tradicted by Anderson’s testimony that at the meetings, Local
    226 was allowed to give “feedback” that was later incorpo-
    rated into the new policy. As Anderson admitted, the provision
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    allowing for advance vacation days was added in response to
    the concerns of Local 226 and other unions.
    On May 16, 2011, the board of education considered and
    adopted the new vacation accrual policy at a public meeting.
    Anderson testified that after the adoption of the new policy
    but before it took effect on August 1, the District talked with
    Local 226 about concerns it had with the policy. She stated that
    the District indicated it would work with Local 226 to address
    any concerns.
    On May 17, 2011, the District distributed a letter to its
    employees informing them of the new vacation accrual policy
    adopted on May 16. Letters were also sent to employees on
    August 12 and 22 to advise them of their vacation allotment.
    The District’s benefits specialist testified that all of the letters
    were submitted to Local 226 for review prior to being sent.
    All three letters also invited employees to contact the District’s
    benefits specialist if they had any questions.
    Local 226 had numerous opportunities to express its con-
    cerns about the new vacation accrual policy while negotiat-
    ing with the District about the CBA’s for the 2011-12 school
    year. Local 226 and the District met for negotiations no
    less than 15 times between the time when Local 226 was
    informed of the proposed changes and when the changes
    were implemented. Because there were many negotiations
    scheduled before implementation of the new vacation accrual
    policy, Local 226 had multiple opportunities to raise any
    concerns that it had and to add the new policy to the agenda
    for negotiations.
    b. Request to Bargain
    Local 226 did not request negotiations over the new vaca-
    tion accrual policy. Rather, it consistently passed over the
    opportunity to do so. At the February and March 2011 meet-
    ings with the District, Local 226 did not raise any concerns
    other than those relating to vacation advancement. Local 226
    did not protest the new policy at the board of education meet-
    ing on May 16 before it was adopted. And despite the District’s
    indication that it would work with Local 226 to address its
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    772	286 NEBRASKA REPORTS
    concerns, Local 226 did not raise any specific concerns or
    request negotiations on the subject of vacation accrual.
    On June 10, 2011, Local 226 did send a letter to the District,
    alleging that the new vacation accrual policy was a prohib-
    ited practice. Local 226 requested that the District “cease and
    desist from implementing [the vacation accrual] policy.” Local
    226 asked the District to “advise as to [the District’s] inten-
    tions.” When the District responded on June 17, it stated, “We
    remain open . . . to working with Local 226 to address any
    concerns about the practical application of the revised policy.”
    Local 226 did not respond. Rather, Local 226 used its letter of
    June 10 as an excuse not to negotiate, because it had already
    expressed its objections.
    Despite alleging on June 10, 2011, that the District had com-
    mitted a prohibited practice, Local 226 did not file petitions
    with the CIR based on that prohibited practice until 7 months
    later, on January 27 and 30, 2012. It entered into negotiations
    with the District and ultimately signed new CBA’s for the 2011-
    12 school year well before filing this action. In the face of a full
    negotiation schedule and the prospect of adopting the CBA’s
    that would make the new policy binding on its members, Local
    226 still did not raise the matter of vacation accrual. Indeed,
    Huber testified that Local 226 did not make any substantive
    proposals regarding vacation accrual during negotiations of
    the CBA’s for the 2011-12 school year. Anderson admitted that
    Local 226 “did not bring it to the table.”
    At the conclusion of these scheduled negotiations, Local
    226 did in fact enter into new CBA’s with the District. These
    CBA’s explicitly incorporated the entire policies and regula-
    tions, including the new vacation accrual policy. Thus, upon
    entering into these new CBA’s, the vacation accrual policy to
    which Local 226 objected was made binding upon Local 226
    and its members.
    Local 226 argues that it did request negotiations with the
    District and maintains that the District presented the vaca-
    tion accrual policy as nonnegotiable. The CIR considered and
    rejected those claims. After mentioning Anderson’s testimony
    that Local 226 requested negotiations about the new vaca-
    tion accrual policy, the CIR found that the District did not
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    commit a prohibited practice precisely because Local 226
    failed to request negotiations. In so finding, the CIR explicitly
    rejected Local 226’s contention that it requested negotiations
    and implicitly rejected the testimony upon which the claim
    was based. Furthermore, the CIR rejected much of Anderson’s
    testimony attempting to explain why Local 226 did not nego-
    tiate. Significantly, the CIR found that Anderson’s testimony
    that the District considered the vacation accrual policy non-
    negotiable was not supported by the other evidence in the
    case. Taken as a whole, the CIR’s order concluded that the
    evidence supported the District’s version of the facts over that
    of Local 226.
    [12] This court will consider the fact that the CIR, sitting as
    the trier of fact, saw and heard the witnesses and observed their
    demeanor while testifying and will give weight to the CIR’s
    judgment as to credibility. Crete Ed. Assn. v. Saline Cty. Sch.
    Dist. No. 76-0002, 
    265 Neb. 8
    , 
    654 N.W.2d 166
    (2002). As an
    appellate court, we do not reweigh testimony. See Henderson v.
    City of Columbus, 
    285 Neb. 482
    , 
    827 N.W.2d 486
    (2013). The
    testimony before the CIR presented two versions of the facts
    surrounding the new vacation accrual policy. Per our scope of
    review, we give weight to the CIR’s acceptance of one version
    of the facts over the other.
    c. Conclusion as to Waiver
    We conclude Local 226 was put on notice of the proposed
    changes and consequently became obligated to request bar-
    gaining if it had any concerns about the new policy. Local
    226 was given more than sufficient opportunity to express
    concerns about the new vacation accrual policy and negoti-
    ate regarding it. Those opportunities were available before
    the policy went into effect and before it became binding upon
    Local 226.
    Considering the evidence as a whole and giving deference
    to the CIR’s weighing of the evidence, we conclude that Local
    226 did not request to bargain. Instead, the preponderance of
    the competent evidence before the CIR clearly demonstrated
    that Local 226 sat on the knowledge that the District planned
    to make changes to the vacation accrual policy and signed
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    774	286 NEBRASKA REPORTS
    new CBA’s that made those changes binding on Local 226’s
    members. Such evidence established a clear and unmistakable
    waiver of Local 226’s right to negotiate.
    By showing that Local 226 failed to request bargaining after
    being placed on notice of the proposed changes, the District
    proved clear and unmistakable waiver by Local 226 of the right
    to negotiate. Because Local 226 waived such right, the District
    did not commit a prohibited practice by failing to negotiate
    with Local 226 about the new vacation accrual policy. The CIR
    did not err in so finding.
    2. Cross-Appeal
    In the event that we did not affirm the CIR’s finding that
    Local 226 failed to bargain, thereby precluding a ruling that
    the District committed a prohibited practice, the District’s
    cross-appeal provided three alternate routes by which the CIR
    could have reached the same result. The District argues that
    the CIR erred in not finding against Local 226 for one of those
    three reasons and asks that we affirm the ultimate decision of
    the CIR.
    [13] Having affirmed the CIR’s decision, we do not reach
    the District’s errors on cross-appeal. An appellate court is
    not obligated to engage in an analysis that is not necessary to
    adjudicate the case and controversy before it. Holdsworth v.
    Greenwood Farmers Co-op, ante p. 49, 
    835 N.W.2d 30
    (2013).
    VI. CONCLUSION
    For the aforementioned reasons, we affirm the CIR’s order
    finding that the District did not commit a prohibited practice
    and dismissing Local 226’s petitions.
    Affirmed.
    Miller-Lerman, J., not participating.