[¶ 1] Trinity Hospitals, a North Dakota non-profit corporation, petitions for a supervisory writ, asking this Court to direct the district court to vacate its order denying Trinity Hospitals’ motion for summary judgment and to dismiss a wrongful death action by Laura Phillips, as personal representative of the estate of Eleanor Neiss, against Trinity Hospitals. We conclude Trinity Hospitals is immune from suit under the exclusive remedy provisions of workers’ compensation law, and we direct the district court to dismiss Phillips’ action.
I
[¶ 2] Phillips brought a wrongful death action against Trinity Hospitals, alleging Neiss was employed by Trinity Health, a North Dakota non-profit corporation, and was walking in a service tunnel that was owned by Trinity Hospitals and that connected Trinity Hospital St. Joseph’s with the Health Center Medical Arts building in Minot when she fell and hit her head, resulting in serious injuries that led to her *686 death. The accident occurred while other Trinity Health employees were stripping and waxing the floor of the service tunnel. At the time of the accident, Neiss had been assigned to clean the second floor of the Medical Arts building and was using -the service tunnel to return to the Medical Arts building from a cafeteria in Trinity Hospital St. Joseph’s. A “skywalk and service tunnel access and utilities easements agreement” provided that Trinity Hospitals was responsible for the maintenance and upkeep of the service tunnel. Phillips alleged Trinity Hospitals was negligent in “failing to keep the service tunnel in good working order and condition, failing to make necessary repairs, failing to properly maintain, failing to prevent leakage and seepage into the service tunnel, failing to maintain a dry walking/working surface for employees of Trinity Health or others using the tunnel, failing to warn, failing to take reasonable precautions to prevent people from being injured/ killed, and/or otherwise failing to take appropriate safety precautions.”
[¶ 3] Trinity Hospitals answered and moved for summary judgment, asserting Neiss’ surviving spouse had received Workforce Safety and Insurance (“WSI”) benefits through Trinity Health and Phillips was barred from suing Trinity Hospitals under the exclusive remedy provisions of workers’ compensation law because Trinity Health and Trinity Hospitals were the same entity. Trinity Hospitals claimed it is part of Trinity Health, an integrated healthcare system consisting of four nonprofit corporations, Trinity Hospitals, Trinity Homes, Trinity Kenmare Hospital, and Trinity Health Foundation; Trinity Health is governed by a single board of directors and operated by a single administrative team; Trinity Health controls all operations and facilities of the integrated healthcare system, including the repairs, maintenance, and housekeeping for the properties of all four of the related nonprofit corporations; although the assets and liabilities of each corporation are tracked separately, all four corporations’ financial statements are consolidated in Trinity Health’s financial statement; Trinity Health, under its own name and under the name “Trinity Health and Affiliates,” is the only entity that files a tax return, which includes the revenues and expenses for all four corporations; Trinity Hospitals has no employees and all employees in the healthcare system are employees of Trinity Health; Trinity Health is responsible for the payroll of all employees within its healthcare system and Trinity Hospitals does not pay wages to anyone; Trinity Health prepares and distributes all W-2 forms to its employees; Trinity Health uses one employee handbook for all employees in its healthcare system; Trinity Health has one Human Resources Department; Trinity Health employees work between and among all the facilities within the healthcare system and an employee’s salary generally is allocated to the respective entity according to the time the employee works at each entity; Trinity Health pays the WSI premiums for all the employees in the healthcare system; WSI has determined that Trinity Hospitals is not a separate entity from Trinity Health for purposes of WSI coverage; and Trinity Health’s premium payments to WSI covered all employees in the Trinity Health system, including those employees working at Trinity Hospitals.
[¶ 4] The district court denied Trinity Hospitals’ motion for summary judgment, concluding Trinity Hospitals was not immune from tort liability under the exclusive remedy provisions of workers’ compensation law. The court, relying upon a parent and subsidiary analysis in
Wodogaza v. H & R Terminals, Inc.,
II
[¶ 5] Trinity Hospitals petitions this Court for a supervisory writ, asking us to direct the district court to vacate its denial of Trinity Hospitals’ motion for summary judgment and to dismiss Phillips’ action. Trinity Hospitals argues the district court’s decision is erroneous because Trinity Hospitals and Trinity Health are the same entity for purposes of the exclusive remedy provisions. Trinity Hospitals seeks a supervisory writ, asserting the district court’s decision is not appealable and requires Trinity Hospitals to defend a lawsuit in which it is immune from liability. Trinity Hospitals claims it has no adequate alternative remedy. Phillips responds that Trinity Hospitals’ petition for a supervisory writ should be denied because Trinity Hospitals has a right to appeal from any subsequent adverse judgment. Phillips argues Trinity Hospitals is not immune from suit under the exclusive remedy provisions and the district court did not err in denying Trinity Hospitals’ motion for summary judgment.
A
[¶ 6] Our authority to issue supervisory writs originates from N.D. Const, art. VI, § 2, and is a discretionary power that we exercise rarely, cautiously, and not as a matter of right.
Dimond v. State Bd. of Higher Educ.,
[¶ 7] In
State v. Haskell,
[¶ 8] We conclude this case is controlled by Mitchell because in this case a similar important public interest in. the workers’ compensation immunity provisions is present. We further conclude this case is extraordinary and Trinity Hospitals has no adequate alternative remedy because the denial of a motion for summary judgment is not appealable. We therefore hold this is an appropriate case in which to exercise our discretionary authority and invoke our supervisory jurisdiction.
B
[¶ 9] Trinity Hospitals argues it is the same entity as Trinity Health and is immune from suit under the exclusive reme *688 dy provisions of the workers’ compensation law in N.D.C.C. tit. 65. Trinity Hospitals claims it is completely controlled by Trinity Health and the two entities are so integrated that neither can be viewed as a separate economic entity. Phillips responds that Neiss’ employer, Trinity Health, did not own the service tunnel and was not responsible for its maintenance and that Trinity Hospitals, the corporation that owned the tunnel and was responsible for its maintenance, is a third party responsible for Neiss’ death under N.D.C.C. § 65-01-09.
[¶ 10] The district court decided this case in the posture of a denial of a motion for summary judgment, and our analysis is within that context. Summary judgment is a procedural device for promptly resolving a controversy on the merits without a trial if either party is entitled to judgment as a matter of law, and if no dispute exists as to either the material facts or the inferences to be drawn from undisputed facts, or if resolving disputed facts would not alter the result.
ACUITY v. Burd & Smith Constr.,
Inc.,
[¶ 11] The workers’ compensation act, N.D.C.C. tit. 65, is a legislatively created compromise for claims between injured workers and their employers.
Cervantes v. Drayton Foods, L.L.C.
[¶ 12] In
Cervantes,
[¶ 13] Here, it is undisputed Trinity Health is a “contributing employer” under workers’ compensation law and Phillips has sued a related corporation, Trinity Hospitals, for Neiss’ death. In analyzing immunity issues for related corporations, one noted commentator has said “[t]he commonest question arising out of relations between affiliated corporations and their employees is whether an employee of a wholly-owned subsidiary can sue the parent corporation, and whether an employee of the parent can sue the subsidiary.” 6 Arthur & Lex K. Larson, Larson’s Workers’ Compensation Law § 112.01 (2006). Professor Larson recognizes common ownership, identity of management, and the presence of a common insurer are not enough to create the same identity between a parent and a subsidiary for compensation purposes and the most significant factor for compensation purposes is actual control. Id. If the subsidiary is in practice not only completely owned, but completely controlled by the parent, identity may well be found and immunity conferred, and conversely, a showing of absence of control is perhaps the most effective single way to disprove the unity of a parent corporation and a subsidiary. Id.
[¶ 14] In denying Trinity Hospitals’ motion for summary judgment, the district court relied on the analysis in a Michigan Court of Appeals case,
Wodogaza,
[¶ 15] In
Wodogaza,
the plaintiff was an employee of the parent corporation, Preston Trucking, and was injured when a forklift he was driving overturned because of actions of a co-worker who was driving a tractor owned by S & P Equipment, a wholly-owned subsidiary of Preston Trucking.
[¶ 16] The
Wodogaza
court distinguished an earlier Michigan Supreme Court case,
Wells,
in which an employee of a wholly-owned subsidiary corporation, Muskegon Firestone, sued the parent corporation, Firestone.
Our disregard of the separate corporate entities of Firestone and its wholly owned subsidiary is premised upon our recognition of the important public policies underlying the Michigan Worker’s Disability Compensation Act and our belief that a contrary determination would be inequitable under the facts of this case. The statutory workers’ compensation scheme was enacted for the protection of both employees and employers who work and do business in this state. The system assures covered employees that they will be compensated in the event of employment-related injuries. In addition, employers are assured of the parameters of their liability for such injuries. By agreeing to assume responsibility for all employment-related injuries, employers protect themselves from the possibility of potentially excessive damage awards. In order to effectuate these policies, the statute has been liberally construed to provide broad coverage for injured workers.
If the statute is to be construed liberally when an employee seeks benefits, it should not be construed differently when the employer asserts it as a defense to a tort action brought by the employee who claimed and accepted benefits arising from that employment relationship. There is absolutely no evidence that [Firestone] maintained Muskegon Firestone for the purpose of insulating itself from its workers’ compensation liabilities. [Firestone] supplied workers’ compensation benefits through its insurance company and accepted responsibility for the work related injuries of its Muskegon employees. Indeed, under the facts and circumstances of this case, we would not have permitted Firestone to shield itself be *691 hind its wholly owned subsidiary in order to avoid payment of workers’ compensation benefits to plaintiff.
Wells,
[¶ 17]
Wodogaza
distinguished
Wells,
recognizing that although courts generally respect the separateness of corporate entities, the equities in the cases were not the same.
[¶ 18] In
James,
[¶ 19] We agree with the
James
court that a salient factor in determining an employer-employee relationship is the use of combined workers’ compensation premiums for related corporations. That factor is particularly relevant in North Dakota because N.D.C.C. § 65-01-08 specifically precludes an injured employee from bringing an action against a “contributing employer.”
See Cervantes,
2. Trinity Health pays the WSI premiums for all employees in the Trinity Health system.
3. WSI set up and determined the structure of the premiums and coverage for the employees of Trinity Health; as such, all Trinity corporations fall under one account at Workforce Safety <& Insurance for the payment of WSI premiums.
4. WSI does not consider Trinity Hospitals to be a separate entity from Trinity Health for WSI purposes; the premium payment made by Trinity Health to WSI is intended to cover all employees in the Trinity Health system.
5. WSI has determined the structure of premiums paid by Trinity Health to encompass employees working at Trinity Hospitals, in addition to all other employees in the Trinity Health integrated healthcare system.
We conclude WSI’s determination that “all Trinity corporations fall under one account” at WSI is a prominent factor in this case.
[¶ 20] Moreover, the organizational structure for Trinity Health and its related corporations is not disputed. Although Trinity Health and Trinity Hospitals are separate corporations, Trinity Hospitals is part of Trinity Health, a healthcare system consisting of four non-profit corporations: Trinity Hospitals, Trinity Homes, Trinity Kenmare Hospital, and Trinity Health Foundation. Trinity Health is the sole member of the four non-profit corporations, and Trinity Health and the four nonprofit corporations are governed by the same board of directors and by the same officers. All employees in the Trinity healthcare system are employees of Trinity Health, Trinity Health is responsible for the payroll for all employees, and there is one Human Resources Department at Trinity Health. Although a “skywalk and service tunnel access and utilities easements agreement” provided that Trinity Hospitals was responsible for the maintenance and upkeep of the service tunnel, according to Kevin Seehafer, the chief financial officer for Trinity Health and the four non-profit corporations, the director of plant operations and maintenance for Trinity Health was responsible for repairs, maintenance, and housekeeping for the properties of all four of the related nonprofit corporations. Phillips has not identified any evidence to contradict the organizational structure for Trinity Health and its related non-profit corporations or the control Trinity Health exercises over those corporations. WSI’s determination about the structure of Trinity Health’s WSI premiums, coupled with the organizational structure and relationship of Trinity Health and Trinity Hospitals, compels a conclusion that Trinity Health and Trinity Hospitals are the same entities for WSI purposes under both the “control” and the “economic reality” tests.
[¶ 21] On this record, we conclude Trinity Hospitals is the same entity as Trinity Health for WSI purposes and is entitled to the benefits of the exclusive remedy provisions as a “contributing employer” under the plain and unambiguous language of N.D.C.C. § 65-01-08. Holding otherwise would allow WSI to collect a premium for all Trinity Health employees but only provide coverage while those employees were on property owned by Trinity Health and only while those employees were doing the work of Trinity Health. *693 This conclusion would leave the other four Trinity corporations without employees and without WSI coverage any time Trinity Health employees did work for the four wholly-owned corporations. We therefore conclude Trinity Hospitals is immune from suit under the exclusive remedy provisions of our workers’ compensation law and Trinity Hospitals’ motion for summary judgment should have been granted.
Ill
[¶ 22] We exercise our supervisory jurisdiction and direct the district court to vacate its order denying Trinity Hospitals’ motion for summary judgment and to dismiss Phillips’ action.
