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Nicole E. Tsiaras

Portrait of Nicole E. Tsiaras

Nicole Tsiaras is an associate in the Casualty Department whose practice focuses on the areas of product liability, premises liability, auto liability, and general liability. She joined the firm as a Summer Associate in June 2023 and continued to work part-time with the firm as a Law Clerk through her final year of law school. 

Nicole earned her Bachelor of Arts degree in Psychology with a minor in Sports Management from The Catholic University of America in 2020. During her time in college, she was a member and team captain of The Catholic University of America Women’s Field Hockey team. 

In 2024, Nicole received her juris doctor from The University of Pittsburgh School of Law. While in law school, she was a member of the Sport and Entertainment Law Society, served as the secretary to the Pitt Law Women’s Association, and was a Pitt Law Ambassador. She was also the recipient of the CALI Excellence for the Future Award – Advanced PA Tort Practice, and a recipient of a merit-based scholarship. Additionally, as a law student, she served as a judicial intern for the Honorable D. Michael Fisher of the United States Court of Appeals for the Third Circuit. 

Outside of the office, Nicole has been a field hockey coach with numerous USA Field Hockey affiliated clubs and training programs, as well as in the local community through recreational and school-sponsored leagues. 

Nicole is admitted to practice law in the Commonwealth of Pennsylvania. 

    • Pennsylvania, 2024
    • University of Pittsburgh School of Law, 2024, J.D.
    • The Catholic University of America, 2020, B.A.
    • “This Is a Story About Control, Co-Owners’ Control: How Simone v. Alam Reshaped the Standard for Indispensable Parties in Premises Liability Actions,” Defense Digest, 2025-09-01, Vol. 31, No. 

Thought Leadership

Defense Digest

This Is a Story About Control, Co-Owners’ Control: How Simone v. Alam Reshaped the Standard for Indispensable Parties in Premises Liability Actions

September 1, 2025

Key Points: The Supreme Court of Pennsylvania recently held that mere ownership does not render a party indispensable in a premises liability action.  The Supreme Court held that the indispensability of a party who co-owns a property that is the subject of a premises liability action hinges on that co-owner’s control and possession of the property.  Recently, the Supreme Court of Pennsylvania established a new rule relative to indispensable parties. Specifically, in Simone v. Alam, 333 A.3d 359 (Pa. 2025), the court held that a tenant in common who did not exercise possession or control over the subject premises is not an indispensable party in a premises liability action.  Nicole Simone, the plaintiff, alleged that she slipped and fall on an area of ice that had accumulated in the common area of a rental property owned and operated by the defendant. At the time of the alleged incident, the property was co-owned by the defendant and his brother, who was not named as a defendant. Despite knowing that the defendant and his brother co-owned the property as tenants in common, the plaintiff never sought to join the brother as an additional defendant. Instead, her position was that the defendant was solely responsible for the hazardous condition that caused her injuries as he was the property owner in possession and control of the premises. After expiration of the applicable statute of limitations, the defendant filed a motion to dismiss, arguing that regardless of his brother’s lack of possession or control over the property, his brother’s status as a co-owner of the property made him an indispensable party. In opposition, the plaintiff maintained that the brother was not an indispensable party as he was merely a co-owner with no possession or control over the operations of the premises as a rental property.  The defendant’s motion to dismiss was granted by the trial court and upheld by the Superior Court of Pennsylvania. Both courts held that the brother’s status as a mere co-owner of the property was enough to render him an indispensable party, thus depriving the trial court of subject matter jurisdiction and requiring dismissal of the action.  On appeal to the Supreme Court, the issue was whether a tenant in common of real property who did not exercise possession or control over the property was an indispensable party in a premises liability action. As part of its ruling on this issue, the Supreme Court analyzed Pennsylvania Rule of Civil Procedure 2227(a), which states that an individual with a joint interest in the subject matter of an action is an indispensable party to that action. The court held that Rule 2227(a) must be construed by its plain language, enforcing that words or phrases that are expressly defined be understood in accordance with such definitions.  Relying on Black’s Law Dictionary, the Supreme Court deconstructed Rule 2227(a) and defined a “joint interest” as one “that is acquired at the same time and by the same title as another person’s.” The court also defined “subject matter” as “the issues presented for consideration; the thing in which a right or duty has been asserted; the thing in dispute.” Using these definitions, the court construed the meaning of Rule 2227(a) to find indispensable parties as those who have the same interest in the issues presented in an action. The court reasoned that the subject matter in a premises liability action is the liability of a possessor of property for the injuries a party has sustained as a result of a hazardous condition on that property. The court held that liability stems from the possession and control of the property, not the ownership. Applying the plain language construction of Rule 2227(a) to premises liability actions, the court ruled that a party is indispensable to a premises liability action when that party has a joint interest in the possession and control of the premises at issue. Given its holdings, the Supreme Court declined to extend the rule set forth in Minner v. Pittsburgh, 69 A.2d 384 (Pa. 1949), reasoning that the rulings in Minner—specifically, co-owners of a property are indispensable parties due to their mere ownership interests in the property—were limited to the facts of the case. The court found that liability in Minner arose from ownership of the property since it was the sole indicator of possession and control over said property.  In distinguishing Minner, the Supreme Court reasoned that the plaintiff’s allegations of negligence in the present matter arose from the defendant’s actions in possession and control of the property, as opposed to his status as a co-owner of the property. The court explained that the abundance of factual support pointed towards the defendant’s position as a sole landlord occupying the premises with intent to control its at-issue common areas.  The court further explained that, as the defendant’s brother was a tenant in common, who did not exercise any possession or control over the property, he was not an indispensable party to the plaintiff’s premises liability action. As such, the court ruled that the lower courts erred in their dismissal of the action. The Supreme Court reversed the decision of the Superior Court and remanded the case to the trial court for further proceedings. The Supreme Court’s ruling in Simone signals that a premises liability case will not be dismissed for failure to join an indispensable party based solely upon an argument of ownership. Instead, attorneys will need to establish that the indispensable party had joint interest in the possession and control of the property.  Nicole is a member of our Casualty Department and can be reached at (412) 803-1164 or NETsiaras@mdwcg.com.    Defense Digest, Vol. 31, No. 3, September 2025, is prepared by Marshall Dennehey to provide information on recent legal developments of interest to our readers. This publication is not intended to provide legal advice for a specific situation or to create an attorney-client relationship. ATTORNEY ADVERTISING pursuant to New York RPC 7.1. © 2025 Marshall Dennehey. All Rights Reserved. This article may not be reprinted without the express written permission of our firm. For reprints, contact tamontemuro@mdwcg.com.

Firm Highlights

Thought Leadership

Employer/Carriers Must Explicitly Invoke Right to Deny Claim Under “Pay and Investigate” Statutory Provision; Employes Must Always Prove Medical Necessity of Treatment

Koren v. City of Kissimmee/PGCS, ___So.3d___(Fla 1st DCA 6/10/26) The majority opinion in Koren holds that the Judge of Compensation Claims (JCC) properly denied psychiatric treatment because the claimant did not challenge on appeal the JCC’s finding that the requested treatment was not medically necessary. However, Judge K. Thomas authored a detailed concurrence agreeing with the result on the ground that the claimant failed to meet his burden of proving medical necessity. In doing so, Judge K. Thomas also emphasized an important principle: employer/carriers must expressly invoke the 120-day pay-and-investigate provision under Florida’s Workers’ Compensation Act if they intend to preserve their right to deny compensability. Merely authorizing evaluations, without explicitly invoking the 120-day rule, may be insufficient to preserve the right to deny compensability of specific injuries. In Koren, the claimant sustained injuries to his upper lip, tooth, right knee, and right foot when a board gave way on a deck he was repairing for the employer/carrier. The accident was accepted as compensable, and multiple specialists were authorized to treat his physical injuries, including an ear, nose, and throat physician, dentist, orthopedist, and plastic surgeon. The claimant later sought psychiatric treatment and attended an independent medical examination (IME) with a psychiatrist. The IME diagnosed adjustment disorder with mixed anxiety and depressed mood, opining that the condition was caused by “the actual appearance of the scar” resulting from the industrial accident. The IME recommended continued medication, including an antidepressant, as well as follow-up care with a psychiatrist and psychologist. Critically, however, the IME did not offer an opinion regarding the medical necessity of this treatment. The claimant then filed a petition for benefits attaching the IME report and requesting authorization of psychiatric care. The employer/carrier responded by authorizing a psychiatrist, whom the claimant did, in fact, see. However, the employer/carrier neither denied the claim nor issued written notice invoking the 120-day pay-and-investigate provision. The authorized psychiatrist subsequently opined that the claimant’s psychiatric condition was unrelated to the industrial accident and instead attributable to prior employment as a law enforcement officer and volunteer firefighter. The psychiatrist further concluded that the work accident was not the major contributing cause of the condition. Although the employer/carrier stipulated to the authorization of the psychiatrist, it ultimately denied the claimant’s entitlement to psychiatric treatment. The JCC denied the requested benefit. The majority opinion affirmed on the narrow ground that medical necessity had not been established. Judge K. Thomas’s concurrence, however, expands on the legal framework. Under Florida law, an employer/carrier presented with a claim must “pay, pay and investigate, or deny.” To avail itself of the 120-day pay-and-investigate protection, the employer/carrier must affirmatively and explicitly invoke that option, typically through a written 120-day letter. The statutory investigative period does not arise automatically upon the provision of care. Furthermore, an attempt to characterize authorization as a “one-time evaluation” does not avoid waiver, as even a single evaluation may constitute the provision of a compensable benefit. By authorizing psychiatric care without invoking the 120-day provision, the employer/carrier in Koren effectively accepted compensability of the claimant’s PTSD condition. Nonetheless, it retained the ability to contest entitlement to ongoing treatment. While the employer/carrier failed to demonstrate a break in the causal chain, the claimant still bore the burden of proving that the requested treatment was medically necessary. Because the JCC found that the claimant failed to meet this burden, and the claimant did not challenge that finding either below or on appeal, the denial of psychiatric benefits was ultimately affirmed.

Thought Leadership

Appellate Division Affirmed Workers’ Compensation Order Striking Defenses and Ordering Treatment

Kneezel v. Lambertville House, No. A-2729-24 (June 1, 2026) In Kneezel v. Lambertville House, Lambertville House appealed from a workers’ compensation order to strike its defenses and directing it to authorize knee replacement surgery. By way of background, the petitioner worked as a property manager for Lambertville and injured his back and knee in December 2019. A workers’ compensation claim was filed and the petitioner treated at Rothman Institute. He underwent four injections to his low back and was recommended for surgery. The day before, Lambertville canceled and set up a second opinion exam with Dr. Lawrence Barr. The petitioner filed a motion for medical and temporary benefits (MMT), which was ultimately granted by the workers’ compensation judge. As such, he received authorized treatment for his back. The petitioner was then referred for his left knee pain and treatment was provided by Lambertville. He was recommended for a knee replacement, but the petitioner declined at that time. Approximately two years later, he sought additional treatment, which was denied. After obtaining a report from Dr. Dhimant Balar, the petitioner filed another MMT. In response, Lambertville submitted Dr. Zachwieja’s report and surveillance reports. Dr. Balar opined the left knee injury was related to the work accident, whereas Dr. Zachwieja believed it was due to his advanced degeneration as there was no evidence of acute trauma. A hearing on the MMT began in November 2024, with the petitioner testifying his knee pain never went away and he had a lot of trouble walking, especially for more than five to ten minutes. The surveillance investigators were scheduled to testify after, but had to be rescheduled a couple of times. During a conference in early February 2025, prior to when the investigators were to testify, it was discovered that Lambertville did not provide discovery to the petitioner, including the investigators’ information and surveillance footage. The petitioner moved to strike Lambertville’s defenses and sought an order to authorize the left knee treatment. Petitioner’s counsel pointed to Lambertville’s unreasonable delay in providing the necessary information and Lambertville did not file an opposition. In March 2025, the investigators’ testimonies were set for mid-March. On March 14, 2025, petitioner’s counsel advised she was still waiting for discovery and the judge directed Lambertville’s counsel to provide any missing information by March 17, 2025. Lambertville provided video clips after the petitioner had testified so the judge indicated that if everything was not provided to petitioner’s counsel by the end of March 19, 2025, the judge would sign the order granting the MMT. The next day, the judge entered the order striking Lambertville’s defenses and ordering left knee treatment. Lambertville moved for reconsideration of stay of the order pending appeal. Following oral arguments, the judge denied Lambertville’s motion, citing N.J.A.C. 12:235-3.11 (a)(4)(i) that Lambertville was required to provide surveillance after the petitioner’s testimony and that it had failed to do so even after he testified in November 2024. The judge also noted the investigators’ testimonies were rescheduled multiple times and Lambertville had more than enough time to provide the requested information and failed to do so. The judge also noted Lambertville failed to file a response to the petitioner’s motion to strike. In addition, the judge pointed to the petitioner’s testimony, finding him to be credible and observing him to have to stand and move multiple times during testimony. Lambertville appealed, arguing its due process rights were violated as there was no opportunity to be heard and the order was procedurally and factually defective. However, the Appellate Division disagreed, noting Lambertville had sufficient notice and many opportunities to be heard. It was noted Lambertville’s failure to comply with the judge’s requests led to the order. As for the motion to strike, the Appellate Division indicated Lambertville failed to oppose the motion, which provided the judge with the ability to decide without a hearing for an uncontested motion. Ultimately, the Appellate Division found no abuse of discretion and affirmed the judge’s rulings and order.

Result

No-Cause Jury Verdict Secured in Wrongful Death Trial

We successfully obtained a no-cause jury verdict in a 13-day wrongful death trial. The decedent, a 59-year-old man, was admitted to the emergency room on February 15, 2019, with complaints of abdominal pain, decreased appetite, and constipation, despite the use of laxatives. The patient did not complain of any nausea, vomiting, or diarrhea. He had a significant medical history including diabetes, hypertension, prior coronary artery stenting, morbid obesity (with past gastric bypass surgery), longstanding ventral hernia, and back pain. A CT scan revealed multiple hernias and a potential closed-loop bowel obstruction, leading to a surgery consultation. Our client, an emergency general surgeon, interpreted that the patient did not have a closed loop or any significant obstruction and recommended non-surgical management. The patient was approved to have clear liquids, and had a vomiting incident shortly after, but our client was not notified. The patient was returned to NPO status, and after improving overnight, he was returned to “clears” and additional medical and renal consults were ordered. Our client did not receive any communications from the residents/nurses of any changes in the patient’s condition. On February 18, 2019, two rapid responses were called due to increased heart rate and vomiting. It is believed that the vomiting resulted in aspiration, causing sepsis, ultimately leading to the patient’s death. During the trial, the plaintiff’s sole medical expert highlighted imaging on the wrong hernia, which called into question all of his opinions in the case. We made key objections related to the expert testimony, limiting what the allegations were, and preventing new allegations from being made. After approximately two and a half hours of deliberating, the jury returned a no-cause verdict. 

Thought Leadership

Mitigating Long-Tail Liability: Delaware Court Reaffirms Five-Year Workers’ Compensation Deadline

Williamson v. Donald F. Deaven, Inc., No. N25A-07-004 FWW, 2026 LX 252526 (Del. Super. Ct. June 2, 2026) Claimant was involved in a compensable industrial work accident on May 12, 1995, for a low back injury.  Following this, he received compensation for temporary total disability benefits from July 1996 to September 1996 and for sustaining a permanent impairment in 1997 and 1998.  For the next 23 years, the claimant continued treatment and paid his own medical bills without submitting them to the employer’s insurer.  In November 2021, the claimant filed a petition seeking payment for medical expenses, including prospective surgery and a resulting period of total disability.  The employer moved to dismiss the petition, arguing it was barred by Delaware’s five-year statute of limitations (19 Del. C. § 2361(b)). Pursuant to 18 Del. C. § 3914, insurers must provide prompt written notice of the applicable statute of limitations to invoke the five-year deadline.  Due to the age of the case, neither party had a comprehensive file of the claim and the Board had archived its file of the matter.  The carrier’s computer system retained only bare information indicating that payments occurred and agreements and receipts were filed with the Board in 1997. While the claimant argued that the employer could not prove it provided the mandatory statutory notice, the Hearing Officer recovered the archived file, which contained two “Receipts for Compensation Paid” signed by the claimant.  The receipts explicitly contained the required five-year limitation language, which the claimant testified to signing at the hearing.  The claimant also attempted to introduce evidence of payments he claimed the employer made, which would have extended the statute of limitations.  As a preliminary matter, the hearing officer excluded the testimony about the payments because the claimant did not produce them to the employer.  The Board found in favor of the employer and dismissed the claimant’s petition as time-barred. The claimant appealed the Board’s decision, arguing that he never received adequate notice of the statute of limitations and that the hearing officer’s evidentiary ruling was an abuse of discretion. The Court held that the archived, signed receipts constituted substantial evidence that the insurer fulfilled its statutory notice requirements.  Therefore,  the claimant’s petition was time-barred under the statute of limitations provisions of 19 Del. C. § 2361(b).  Furthermore, the Court reinforced strict procedural compliance: it rejected the claimant’s attempts to introduce evidence of payment on appeal, ruling the argument was waived for failure to preserve it while the matter was still before the Board. This recent ruling by the Court underscores the importance and necessity of robust data preservation and precise compliance with notice requirements.  For risk managers, employers, and insurers, the decision highlights how tight administrative execution protects against catastrophic long-tail liability.