AARON, J.

Certified for Partial Publication.

Law Offices of David J. Gallo and David J. Gallo, Del Mar, for Plaintiffs and Appellants.

Gordon & Rees, James J. McMullen, Jr., Matthew G. Kleiner, San Diego, and Justin M. Michitsch, Los Angeles, for Defendant and Respondent.

League of California Cities and California State Association of Counties, as Amicus Curiae on behalf of Defendant and Respondent.

AARON, J.I.

INTRODUCTION

In this appeal, we must determine whether a state entity whose employees are exempt from state law requiring the payment of overtime compensation is nevertheless required to pay overtime compensation to such employees when the state entity jointly employs the employees with a non-state employer. Although we concluded in a prior appeal in this case that the matter should be remanded to the trial court to permit the plaintiffs to amend their complaint to attempt to state a cause of action premised on such a theory ( Morales v. 22nd Dist. Agricultural Assn. (2016) 1 Cal.App.5th 504, 542–544, 206 Cal.Rptr.3d 1 ( Morales )), we now conclude that such a cause of action would not be legally viable. We further conclude that the law-of-the-case doctrine does not require that we reverse the trial court's order sustaining a demurrer to the plaintiffs' second amended complaint.

II.

FACTUAL AND PROCEDURAL BACKGROUND

A. Proceedings in the case prior to our decision in Morales

Defendant 22nd District Agricultural Association of the State of California (the DAA) is a California agency that owns and manages the Del Mar Fairgrounds and the Del Mar Horsepark. Plaintiff Jose Luis Morales and a group of other seasonal employees of the DAA filed a putative class action alleging that the DAA failed to pay plaintiffs overtime compensation required by state law under Labor Code section 510 and federal law under the Fair Labor Standards Act of 1938 ( 29 U.S.C. § 201 et seq. ) (FLSA).

The trial court sustained, without leave to amend, the DAA's demurrer to plaintiffs' section 510 cause of action. After the trial court conditionally certified the case as a collective action, the DAA asserted an affirmative defense to plaintiffs' FLSA claim. Specifically, the DAA alleged that the employees were exempt from the FLSA overtime compensation requirements pursuant to a statutory exemption ( 29 U.S.C. § 213(a)(3) ) commonly referred to as the "amusement exemption." The trial court held a jury trial on the DAA's affirmative defense to plaintiffs' FLSA claim. The jury rendered a verdict in favor of the DAA and the trial court entered a judgment in favor of the DAA. Plaintiffs timely appealed.

B. Morales

The primary issues on appeal in Morales related to plaintiffs' claim under the FLSA. ( Morales , supra , 1 Cal.App.5th at p. 513, 206 Cal.Rptr.3d 1.) The Morales court concluded that the trial court properly granted judgment for the DAA on the FLSA claim. ( Ibid. ) The present appeal presents no issues with respect to that claim.

The Morales court also rejected plaintiffs' contention that the trial court erred in sustaining the DAA's demurrer to plaintiffs' section 510 claim. ( Morales , supra , 1 Cal.App.5th at p. 542, 206 Cal.Rptr.3d 1.) After reviewing relevant case law, statutory law, and administrative regulations, we concluded, "when section 510 and [W]age [O]rder No. 10-2001 are viewed together, the inescapable conclusion is that public employees in the amusement and recreation industry are exempt from state overtime requirements." ( Morales , supra , at p. 541, 206 Cal.Rptr.3d 1.) However, the Morales court concluded that the trial court erred in denying plaintiffs leave to amend to attempt to state a claim for section 510, subdivision (a) overtime "under the joint employee doctrine." ( Morales , at p. 543, 206 Cal.Rptr.3d 1.)In reaching this latter conclusion, the Morales court noted that plaintiffs contended that "the DAA is required to comply with section 510 when it loans out its employees to outside promoters to support ‘interim events,’ ... and charges the outside promoters the labor costs of employing the employees, plus a markup." ( Morales , supra , 1 Cal.App.5th at p. 542, 206 Cal.Rptr.3d 1.) We further noted that "[plaintiffs] assert that they can amend the complaint to allege that when they work on interim events, the DAA is a joint employer with the outside promoters and must therefore comply with section 510." ( Id. at pp. 542–543, 206 Cal.Rptr.3d 1.) After observing that "where joint employment exists, all employers are individually responsible for compliance with the FLSA," ( id. at p. 543, 206 Cal.Rptr.3d 1 ) and that "joint employment is also recognized under California law," ( ibid. ) we concluded that plaintiffs should be granted leave to amend their complaint, reasoning:

"We conclude that [plaintiffs] should be permitted to amend their section 510 claim since they have shown how they can potentially amend their complaint to state a valid claim under the joint employee doctrine. Accordingly, we reverse that part of the order sustaining the demurrer without leave to amend and direct the trial court to grant [plaintiffs] leave to amend the complaint. In so doing, we express no view as to the ultimate merits of [plaintiffs'] section 510 claim." ( Id. at pp. 543–544, 206 Cal.Rptr.3d 1.)

We remanded the matter to the trial court with directions to grant plaintiffs leave to amend their complaint. ( Morales , supra , 1 Cal.App.5th at pp. 543–544, 206 Cal.Rptr.3d 1.)

C. Plaintiffs' second amended complaint

On remand, plaintiffs filed a second amended complaint as a putative class action for the recovery of unpaid overtime compensation. In their second amended complaint, plaintiffs alleged that they had worked as joint employees of the DAA and certain "Outside Promoters." Plaintiffs further alleged that the DAA had failed to pay plaintiffs overtime compensation required by section 510, subdivision (a). Specifically, plaintiffs alleged the following:

"12. [DAA] employs numerous persons to whom [DAA] refers as ‘119-day Employees’.

"13. [DAA]'s 119-day Employees perform tasks such as cleaning out stables, manually sorting trash for recycling, digging and filling trenches, parking lot security, ticket-taking, etc.

"14. [DAA] loans out, leases, and/or seconds, its 119-day Employees to unaffiliated, private ‘promoters’ (hereinafter ‘Outside Promoters’) to support events (hereinafter ‘Interim Events’) such as gun shows, bridal bazaars, private parties, weddings, Christmas tree sales, hot tub sales, home and garden shows, etc.

"15. [DAA] charges the Outside Promoters the labor costs of employing the 119-day Employees, plus a ‘markup’.

"16. When [DAA]'s 119-day Employees are loaned out, leased, and/or seconded, to perform work in support of Outside Promoters' Interim Events, the 119-day Employees are subject to the control of both [DAA] and the Outside Promoter.

"17. When [DAA]'s 119-day Employees are loaned out, leased, and/or seconded, to perform work in support of Outside Promoters' Interim Events, [DAA] is a joint employer with the Outside Promoters, and must therefore comply with Labor Code section 510, subdivision (a).

"18. Separate and in addition to the foregoing, when the 119-day Employees are loaned out, leased, and/or seconded, to perform work in support of Outside Promoters' Interim Events, the 119-day Employees are not directly employed by the State or any political subdivision thereof, for purposes of Wage Order No. 10.

"19. Many of [DAA]'s 119-day Employees work overtime hours in support of Outside Promoters' Interim Events.

"20. [DAA] does not pay its 119-day Employees any overtime compensation.

"21. [DAA]'s above-described policies and practices are in contravention of law.

"22. Each Plaintiff herein has been employed as a 119-day Employee at some point in time subsequent to 25 March 2010.

"23. Each Plaintiff herein is informed and believes he or she (as applicable) has performed work in support of Outside Promoters' Interim Events, and worked overtime hours in connection with such work."

Based on these allegations, plaintiffs brought a single cause of action for recovery of overtime compensation, attorney fees, and costs pursuant to section 510, subdivision (a) and section 1194, subdivision (a) on behalf of themselves and a putative class of "119 day employees." D. The DAA's demurrer

The DAA filed a demurrer to the second amended complaint. In its demurrer, the DAA argued that in Morales , this court concluded that it was exempt from paying overtime compensation as specified in section 510, subdivision (a). The DAA further argued that it was not liable to plaintiffs for overtime compensation under section 510, subdivision (a) by virtue of its alleged status as plaintiffs' joint employer. The DAA argued that Noe v. Superior Court (2015) 237 Cal.App.4th 316, 333–334, 187 Cal.Rptr.3d 836 ( Noe ) "confirms that the joint employer doctrine does not extend California's overtime laws to a joint employer who is otherwise exempt from that law."

E. Plaintiffs' opposition

Plaintiffs filed an opposition in which they argued that the second amended complaint stated a cause of action for overtime violations under section 1194, subdivision (a), which, as the Noe court recognized, " ‘imposes a duty on every employer (i.e., including all co-employers)," (boldface omitted) to ensure that that employees receive overtime compensation mandated by section 510, subdivision (a). Plaintiffs further argued that "[t]he Morales decision precludes [the DAA]'s current argument, because Morales held that plaintiffs' then-proposed amendment would state a claim if joint employment were to be properly pleaded." Finally, plaintiffs argued that "if [the trial court] were to conclude that Noe cannot be harmonized with Morales , [the trial court] would be required to follow Morales under the law-of-the case doctrine."

F. The trial court's ruling

After further briefing and a hearing, the trial court sustained the DAA's demurrer without leave to amend. The trial court reasoned:

"[The DAA] is exempt from the state overtime requirements of Labor Code section 510.

Morales [, supra , 1 Cal.App.5th at pp. 537–538, 206 Cal.Rptr.3d 1 ] (citing Johnson [, supra , 174 Cal.App.4th 729, 95 Cal.Rptr.3d 53 ] ). In an attempt to avoid this prohibition, paragraph 17 of the SAC alleges: ‘... [DAA] is a joint employer with the Outside Promoters, and must therefore comply with Labor Code section 510, subdivision (a).’ However, there exists ‘no authority for the proposition that a joint employer may be held liable for Labor Code violations committed by a

cojoint employer based on principles of agency or joint and several liability. Rather, whether an employer is liable under the Labor Code depends on the duties imposed under the particular statute at issue.’ Noe [, supra , 237 Cal.App.4th at pp. 333–334, 187 Cal.Rptr.3d 836 ]. In short, the alleged joint employment of plaintiffs by the DAA and the private employers does not serve to transfer the liability of the private employers to the DAA. Labor Code section 510 does not contain language from which such joint liability can be inferred.

"Plaintiffs argue that the appellate decision in Morales issued after Noe , such that the Morales decision controls and constitutes ‘law of the case.’ This argument lacks merit. Morales does not hold that joint employers are jointly and severally liable for the wrongdoing of co-joint employers. Instead, the narrow issue that Morales decided was whether Plaintiffs could potentially amend their Complaint. Morales [, supra , at pp. 514, 542–543, 206 Cal.Rptr.3d 1 ]. Although leave to amend was permitted, the appellate court ‘express[ed] no view as to the ultimate merits of [plaintiffs'] section 510 claim.’ Id. at 544 ." (Emphasis altered.)

The trial court thereafter entered a judgment in favor of the DAA.

G. The appeal

Plaintiffs timely appeal from the judgment.

III.

DISCUSSION

The trial court properly sustained the DAA's demurrer to plaintiffs' second amended complaint without leave to amend

Plaintiffs claim that the trial court erred in sustaining the DAA's demurrer to their second amended complaint without leave to amend. Specifically, plaintiffs contend that the trial court erred in concluding that the second amended complaint did not adequately state a claim against the DAA for overtime compensation pursuant to sections 510, subdivision (a) and 1194, subdivision (a).A. Governing law and standard of review

1. The law governing demurrers and the standard of review

In Hamilton v. Greenwich Investors XXVI, LLC (2011) 195 Cal.App.4th 1602, 126 Cal.Rptr.3d 174, the court outlined the following well-established law governing the review of an order sustaining a demurrer without leave to amend:

"A demurrer tests the legal sufficiency of the complaint. We review the complaint de novo to determine whether it alleges facts sufficient to state a cause of action. For purposes of review, we accept

as true all material facts alleged in the complaint, but not contentions, deductions or conclusions of fact or law. We also consider matters that may be judicially noticed. [Citation.] When a demurrer is sustained without leave to amend, ‘we decide whether there is a reasonable possibility that the defect can be cured by amendment: if it can be, the trial court has abused its discretion and we reverse; if not, there has been no abuse of discretion and we affirm.’ [Citation.] Plaintiff has the burden to show a reasonable possibility the complaint can be amended to state a cause of action." ( Id. at pp. 1608–1609, 126 Cal.Rptr.3d 174, fn. omitted.)

In considering a trial court's order sustaining a demurrer without leave to amend, " ‘we review the trial court's result for error, and not its legal reasoning.’ " ( Bains v. Moores (2009) 172 Cal.App.4th 445, 478, 91 Cal.Rptr.3d 309.) "On appeal from a judgment of dismissal entered after a demurrer has been sustained without leave to amend ... the appellate court must affirm the judgment if it is correct on any theory." ( Hendy v. Losse (1991) 54 Cal.3d 723, 742, 1 Cal.Rptr.2d 543, 819 P.2d 1 ( Hendy ).)

2. Relevant substantive law

Section 510, subdivision (a) provides:

"Eight hours of labor constitutes a day's work. Any work in excess of eight hours in one workday and any work in excess of 40 hours in any one workweek and the first eight hours worked on the seventh day of work in any one workweek shall be compensated at the rate of no less than one and one-half times the regular rate of pay for an employee."

Section 1194, subdivision (a) provides:

"Notwithstanding any agreement to work for a lesser wage, any employee receiving less than the legal minimum wage or the legal overtime compensation applicable to the employee is entitled to recover in a civil action the unpaid balance of the full amount of this minimum wage or overtime compensation, including interest thereon, reasonable attorney's fees, and costs of suit."

While section 1194, subdivision (a) does not expressly state "who is liable" for a cause of action based on that statute ( Martinez v. Combs (2010) 49 Cal.4th 35, 49, 109 Cal.Rptr.3d 514, 231 P.3d 259 ( Martinez )), the Martinez court held that "only an employer can be liable" ( ibid. , italics added) for a wage claim under section 1194, subdivision (a) since "no generally applicable rule of law imposes on anyone other than an employer a duty to pay wages." ( Martinez , supra , at p. 49, 109 Cal.Rptr.3d 514, 231 P.3d 259.)

Industrial Welfare Commission Wage Order 10-2001 (Wage Order No. 10) provides that "[e]ight (8) hours of labor constitutes a day's work," and specifies that employment beyond eight hours is "permissible provided the employee is compensated for such overtime." ( Cal. Code Regs., tit. 8, § 11100 (3)(A)(1).) While Wage Order No. 10 generally applies to "all persons employed in the amusement and recreation industry" ( Cal. Code Regs., tit. 8, § 11100(1) ), the order exempts from its scope certain public employees pursuant to the following provision:

"[T]he provisions of this order shall not apply to any employees directly employed by the State or any political subdivision thereof, including any city, county, or special district." ( Cal. Code Regs., tit. 8, § 11100(1)(C).)

B. Plaintiffs may not hold the DAA liable for overtime compensation by virtue of the DAA's status as plaintiffs' joint employer

Plaintiffs claim that the trial court erred in sustaining the DAA's demurrer to their section 1194, subdivision (a) claim for overtime wages allegedly due under section 510, subdivision (a) by virtue of the DAA's status as plaintiffs' joint employer with various "Outsider Promoters." Notwithstanding that the Morales court concluded that "public employees in the amusement and recreation industry are exempt from state overtime requirements," ( Morales , supra , 1 Cal.App.5th at p. 541, 206 Cal.Rptr.3d 1 ) plaintiffs contend that the DAA is jointly liable with the Outside Promoters for all wages due to plaintiffs under section 510, subdivision (a) because the DAA acted as plaintiffs' joint employer.Plaintiffs correctly note that the DAA does not dispute that they adequately alleged that the DAA is their joint employer. Thus, we assume for purposes of this decision that plaintiffs' second amended complaint adequately alleges that the DAA acted as their joint employer. Thus, the question we must determine is whether, under California law, the DAA may be held liable for overtime wages due under section 510, subdivision (a) when the DAA acted as plaintiffs' joint employer, even though this court concluded in Morales "public employees in the amusement and recreation industry are exempt from state overtime requirements." ( Morales , supra , 1 Cal.App.5th at p. 541, 206 Cal.Rptr.3d 1.)

In Morales , we concluded that the matter should be remanded to the trial court because the plaintiffs had "shown how they [could] potentially amend their complaint to state a valid claim under the joint employee doctrine." ( Morales, supra , 1 Cal.App.5th at p. 543, 206 Cal.Rptr.3d 1, italics added.) However, for the reasons stated below, we now conclude that section 510, subdivision (a) does not require the DAA to pay its employees overtime compensation, and that is true whether the DAA is acting as plaintiffs' sole employer or plaintiffs' joint employer. Thus, the trial court properly sustained the DAA's demurrer to the second amended complaint.

To begin with, we are aware of no authority, and plaintiffs have cited none, in either this appeal or in Morales , that supports the counterintuitive proposition that a public employee who is not entitled to overtime compensation when employed solely by a public entity, is entitled to such overtime compensation from the public en tity when the employee is jointly employed by the public entity and a private entity. Further, there is nothing in the text of either section 510 or Wage Order No. 10 that would support such an anomalous result. Section 510, subdivision (a) makes no reference to public entities. As the Johnson court observed, in the context of wage and hour provisions, "the Legislature expressly refers to public entities when it intends them to be included." ( Johnson , supra , 174 Cal.App.4th at p. 737, 95 Cal.Rptr.3d 53.) Wage Order No. 10 in turn expressly "exempts ‘any employees directly employed by the State or any political subdivision thereof, including any city, county, or special district.’ " ( Morales , supra , 1 Cal.App.5th at p. 540, 206 Cal.Rptr.3d 1, quoting Cal. Code Regs., tit. 8, § 11100(1)(C).) Thus, there is nothing in the text of either section 510, subdivision (a) or Wage Order No. 10 that suggests that the DAA may be liable for overtime obligations when it acts as the plaintiffs' joint employer.

Further, plaintiffs have offered no plausible reason why the DAA could nevertheless be liable for paying overtime compensation pursuant to

section 510, subdivision (a) , when the DAA jointly employs the plaintiffs with Outside Promoters. The plaintiffs contend that the Morales court must have concluded that "[the DAA's] employees do not qualify as public employees performing exempt work when they are leased out to support private-sector businesses.’ " (Italics & boldface omitted.) This rationale might be plausible if Morales were based solely on the sovereign powers cannon of statutory construction. Under that cannon, a statute that does not expressly refer to a public entity is deemed not to apply to the public entity if such application "would result in an infringement upon sovereign governmental powers." ( Morales , supra , 1 Cal.App.5th at p. 538, 206 Cal.Rptr.3d 1.) As applied here, if the Morales court had concluded that plaintiffs were exempt from overtime requirements solely because applying the statute would infringe upon the sovereign powers of the DAA when the plaintiffs performed work on behalf of the DAA , then a reasonable argument could be made that the employees are entitled to overtime compensation from the DAA when they are "leased out to support private-sector businesses." However, neither Morales , nor Johnson on which the Morales court relied, concluded that section 510, subdivision (a) did not apply to public employees solely because such application would violate public entities' sovereign powers.

On the contrary, as the Morales court recognized, the Johnson court concluded that the sovereign powers cannon of statutory interpretation provided an additional and alternative basis for concluding that section 510, subdivision (a) did not apply to public employees. ( Morales , supra , 1 Cal.App.5th at p. 538, 206 Cal.Rptr.3d 1 ["indicia of legislative intent led the Johnson court to conclude that a water district was exempt from section 510, but ‘[i]n any event , the [water] District [was] also exempt’ under the sovereign powers canon of statutory interpretation" (italics added) ].) The Morales court, in turn, based its interpretation of section 510 almost entirely on Wage Order No. 10, which broadly exempts state employees from overtime compensation irrespective of the nature of the employees' work . (See Cal. Code Regs., tit. 8, § 11100(1)(C) ["[T]he provisions of this order shall not apply to any employees directly employed by the State or any political subdivision thereof ... "].) The Morales court reasoned, "[W]hen it enacted section 510, the Legislature was aware that [Wage Order No. 10] exempted public employees in the amusement and recreation industry from overtime compensation." ( Morales , supra , 1 Cal.App.5th at p. 541, 206 Cal.Rptr.3d 1.)

In sum, there is nothing in either Morales or Johnson indicating that public employees' exemption from section 510, subdivision (a) overtime compensation applies solely when the employees are performing work that furthers the sovereign purposes of the state. We therefore see no basis for concluding that the applicability of the public employees' exemption from section 510, subdivision (a) turns on the type of work they are performing. Stated differently, we see no basis for concluding, as plaintiffs contend, that public employees are exempt from the overtime compensation mandates of section 510, subdivision (a) if the employees are performing work that furthers the DAA's sovereign purposes, but that such employees become entitled to overtime compensation if they are performing work that furthers the interests of "Outside Promoters." On the contrary, as the Morales court concluded, without qualification, "[P]ublic employees in the amusement and recreation industry are exempt from state overtime requirements." ( Morales , supra , 1 Cal.App.5th at p. 541, 206 Cal.Rptr.3d 1.)

Finally, while both parties and the trial court extensively discussed Noe, supra, 237 Cal.App.4th 316, 187 Cal.Rptr.3d 836, we view that decision as inapposite because Noe did not involve, as does this case, a group of employees' section 1194, subdivision (a) claim against an employer based on a joint employment theory where the employees are exempt from the Labor Code provision at issue . Thus, whatever may be said about the legal responsibilities of joint employers pursuant to principles of joint and several liability or section 1194, subdivision (a) generally, those principles have no application in this case since plaintiffs are exempt from section 510, subdivision (a).In sum, we conclude that the DAA may not be liable for overtime compensation mandated by section 510, subdivision (a) when the DAA acts as a joint employer with another entity. Accordingly, we reject plaintiffs' claim that they properly stated a section 1194, subdivision (a) claim for section 510, subdivision (a) overtime compensation against the DAA pursuant to a joint employment theory of liability.

C. The law-of-the-case doctrine does not mandate reversal

Plaintiffs claim that the law-of-the-case doctrine requires that we reverse the trial court's order sustaining the DAA's demurrer. Specifically, plaintiffs contend that the Morales court held that, if plaintiffs could adequately allege that the DAA was their joint employer, they would state a valid claim against the DAA for section 510, subdivision (a) overtime compensation and that the law-of-the-case doctrine requires that we adhere to this conclusion in this appeal.

1. Governing law

" ‘ "The decision of an appellate court, stating a rule of law necessary to the decision of the case, conclusively establishes that rule and makes it determinative of the rights of the same parties in any subsequent retrial or appeal in the same case." ’ " ( Leider v. Lewis (2017) 2 Cal.5th 1121, 1127, 218 Cal.Rptr.3d 127, 394 P.3d 1055.) " ‘[Q]uestions presented and decided by [an] appellate court upon appeal from a judgment on demurrer become the law of the case, and are not open to question on a subsequent appeal' unless the evidence ‘ "is substantially different in a material respect." ’ " ( Bigbee v. Pacific Tel. & Tel. Co. (1983) 34 Cal.3d 49, 57, 192 Cal.Rptr. 857, 665 P.2d 947.)

In Morohoshi v. Pacific Home (2004) 34 Cal.4th 482, 20 Cal.Rptr.3d 890, 100 P.3d 433 ( Morohoshi ), the Supreme Court outlined the "unjust decision" exception to the law-of-the case doctrine as follows:

"The law of the case doctrine applies to [the Supreme Court] even though the previous appeal was before the Court of Appeal, and it applies even though this court may conclude the previous Court of Appeal opinion was erroneous. [Citation.] ‘Indeed, it is only when the former rule is deemed erroneous that the doctrine of the law of the case becomes at all important.’ [Citation.] The doctrine is, we have recognized, harsh. [Citation.] Accordingly, we have declined to adhere to it where its application would result in an unjust decision, e.g., where there has been a manifest misapplication of existing principles resulting in substantial injustice .... The unjust decision exception does not apply when there is a mere disagreement with the prior appellate determination." ( Id. at p. 491–492, 20 Cal.Rptr.3d 890, 100 P.3d 433.)

2. Application

The trial court concluded that the law-of-the-case doctrine did not apply because the Morales court concluded only that the "[p]laintiffs could potentially amend their Complaint." (Italics added.) The trial court reasoned further, "Although leave to amend was permitted, the [ Morales ] court, ‘express[ed] no view as to the ultimate merits of [plaintiffs'] section 510 claim.’ " The DAA echoes this reasoning on appeal, contending, "[T]he issue that Morales decided was whether Plaintiffs could potentially amend their complaint." We agree with this reasoning. The Morales court did not expressly hold that, if plaintiffs could adequately allege that the DAA was their joint employer, they would state a valid claim against the DAA for section 510, subdivision (a) overtime compensation.

The two key portions of the Morales opinion are as follows. In a paragraph summarizing the plaintiffs' claim for overtime due under section 510, subdivision (a), the Morales court stated:

"We agree that section 510 does not apply to the DAA. Nevertheless, we conclude that the trial court erred in sustaining the demurrer without leave to amend because [plaintiffs] have shown how they can amend their complaint to allege a potentially valid claim for overtime compensation." ( Morales , supra , 1 Cal.App.5th at p. 538, 206 Cal.Rptr.3d 1.)

In addition, the final paragraph of a section of the opinion entitled "Leave to Amend," ( Morales , supra , 1 Cal.App.5th at p. 543, 206 Cal.Rptr.3d 1, italics omitted) states:

"We conclude that [plaintiffs] should be permitted to amend their section 510 claim since they have shown how they can potentially amend their complaint to state a valid claim under the joint employee doctrine. Accordingly, we reverse that part of the order sustaining the demurrer without leave to amend and direct the trial court to grant [plaintiffs] leave to amend the complaint. In so doing, we express no view as to the ultimate merits of [plaintiffs'] section 510 claim." ( Id. at pp. 543–544, 206 Cal.Rptr.3d 1.)

In light of such equivocal language, we conclude that the Morales court did not hold that plaintiffs yet-to-be pleaded joint employment theory adequately stated a cause of action against the DAA. Even if we were to agree with plaintiffs that the Morales court did hold that exempt public employees could sue their public employer for overtime compensation to the extent the public employer jointly employed such employees with a private employer, the law-of-the-case doctrine would not require that this court adhere to this erroneous conclusion. ( Morohoshi , supra , 34 Cal.4th at pp. 491–492, 20 Cal.Rptr.3d 890, 100 P.3d 433.)

We explained in part III.B, ante , that the DAA cannot be liable for section 510, subdivision (a) overtime compensation when the DAA is an employee's joint employer with another entity. Further, neither of the two cases that we cited in Morales in support of our decision to remand the matter to permit the plaintiffs to amend their complaint to attempt to state a claim pursuant to the joint employment doctrine— Bonnette v. California Health & Welfare Agency (9th Cir. 1983) 704 F.2d 1465 ( Bonnette ) and Guerrero v. Superior Court (2013) 213 Cal.App.4th 912, 955, 153 Cal.Rptr.3d 315 ( Guerrero )—supports application of the doctrine in this context. Specifically, neither Bonnette nor Guerrero applied the joint employment doctrine to a public employer to require that the employer comply with a law that, as in this case, exempts its employees from the relevant law. Rather, in both cases, courts concluded that the public entity could be liable as a joint employer ( Bonnette , supra , at pp. 1469–1470 ; Guerrero , supra , at p. 955, 153 Cal.Rptr.3d 315 ), where the relevant public entity was not exempt from the relevant law. (See Bonnette , at p. 1472 [concluding that "the tenth amendment is not a bar to the application of the FLSA's minimum wage provisions"]; Guerrero , at p. 955, 153 Cal.Rptr.3d 315 [interpreting wage order and stating "IWC did not intend to exempt public agencies or political subdivisions generally from [wage order's] provisions"].) Further, plaintiffs have not cited—in this case or in Morales —and our own research has not uncovered, any case in which a court has applied the joint employment doctrine in such an unorthodox manner. Under these circumstances, to reverse the trial court's ruling and permit the plaintiffs' action to proceed would constitute "a manifest misapplication of existing principles resulting in substantial injustice," ( Morohoshi , supra , 34 Cal.4th at pp. 491–492, 20 Cal.Rptr.3d 890, 100 P.3d 433 [outlining unjust decision exception to law-of-the-case doctrine] ).Accordingly, we conclude that the law-of-the-case doctrine does not require that we reverse the trial court's order sustaining the demurrer.

D. Plaintiffs failed to adequately state a claim for overtime compensation based on the theory that the DAA is not their direct employer

IV.

DISPOSITION

The judgment is affirmed. In the interests of justice, each party is to bear its own costs on appeal.

WE CONCUR:

BENKE, Acting P. J.

IRION, J.