Yakov Magdalasov v. ByteDance Inc., Sedgwick Claims Management Services, Inc.

District Court, D. New Jersey·Decided July 13, 2026·No. 2:25-cv-13824·Unknown

Opinion

Not for Publication UNITED STATES DISTRICT COURT DISTRICT OF NEW JERSEY

YAKOV MAGDALASOV,

Plaintiff,

v. Civil Action No.: 25-13824 (ES) (JBC)

BYTEDANCE INC., SEDGWICK CLAIMS OPINION MANAGEMENT SERVICES, INC.,

Defendants. SALAS, DISTRICT JUDGE Before the Court are two motions filed by Defendants ByteDance Inc. (“ByteDance”) and Sedgwick Claims Management Services, Inc. (“Sedgwick”) (collectively, “Defendants”): ByteDance moves to dismiss Plaintiff Yakov Magdalasov’s (“Plaintiff”) claim seeking short-term disability benefits pursuant to Federal Rule of Civil Procedure 12(b)(6), to compel arbitration of any remaining claims, and to stay the action, (D.E. Nos. 23–25 (“ByteDance motion”)); and Sedgwick moves to dismiss Plaintiff’s Complaint (D.E. No. 1 (“Compl.”)) or otherwise compel arbitration, (D.E. No. 33 (“Sedgwick motion”)). The Court has carefully considered the parties’ submissions in connection with the motions, as well as the balance of the record, and decides the matter without oral argument. See FED. R. CIV. P. 78(b); L. Civ. R. 78.1(b). For the reasons stated herein, Defendants’ motions to dismiss and compel arbitration are GRANTED. I. BACKGROUND A. Factual Allegations Plaintiff brings this action pro se under the Employee Retirement Income Security Act of 1974 (“ERISA”), 29 U.S.C. §§ 1001 et seq., against Defendants ByteDance and Sedgwick, for

allegedly wrongful denial of disability benefits and retaliatory conduct against Plaintiff for asserting his rights under an employee benefit plan. (Compl. ¶ 1). Plaintiff alleges that, at all relevant times, he was an employee of ByteDance and a participant in ByteDance’s Short-Term Disability Plan (“Plan”), and that Sedgwick was the third-party claims administrator for the Plan. (Id. ¶¶ 5 & 7). Plaintiff contends that he began a medical leave of absence in March 2025 due to serious mental-health conditions and timely submitted a claim for short-term disability benefits covering the period from March 14, 2025, through May 12, 2025. (Id. ¶¶ 8–9). Plaintiff further alleges that, while he received disability benefits under the Plan for the period of March 14 through April 11, 2025, he learned that benefits for the “second portion of his leave, covering April 12 through

May 12, had been denied.” (Id. ¶ 10). Plaintiff alleges that he repeatedly contacted Sedgwick and ByteDance thereafter, seeking clarification and assistance regarding the denial and the procedures necessary to maintain or extend his leave but received no meaningful response. (Id. ¶¶ 11–16). Plaintiff contends that, after escalating the matter to various governmental agencies and internal company channels, Sedgwick issued written denial dated May 21, 2025, concerning the disputed portion of his disability leave. (Id. ¶¶ 15–18). Plaintiff alleges that the denial failed to provide a meaningful explanation for limiting his approved leave through April 11, 2025, rather than May 12, 2025. (Id. ¶ 18). According to the Complaint, before Plaintiff commenced medical leave, ByteDance presented him with an ultimatum to either agree to a separation or be placed on a performance improvement plan effective April 14, 2025. (Compl. ¶ 19). Plaintiff alleges that the decision to approve disability benefits only through April 11, 2025, was therefore retaliatory and improperly

influenced by employment-related considerations. (Id. ¶¶ 20–21). Plaintiff contends that he appealed the denial on June 17, 2025, and submitted additional medical documentation supporting leave through August 10, 2025. (Compl. ¶ 22). Plaintiff further alleges that he continued to receive little guidance regarding the leave-extension process and that his requests for financial accommodations while the appeal remained pending were rejected. (Id. ¶¶ 23–25). According to the Complaint, on July 1, 2025, Plaintiff was informed that his appeal had been denied. (Id. ¶ 26). Plaintiff contends that the denial improperly relied upon non-medical considerations, disregarded his treating provider’s findings, and caused a worsening of his mental- health condition. (Id. ¶¶ 27–31). Plaintiff alleges that he submitted a rebuttal challenging the denial, but ultimately received notice on July 18, 2025, that his final appeal had been denied. (Id.

¶¶ 32–34). Plaintiff thereafter commenced this action. (See generally Compl.). B. Procedural History On July 22, 2025, Plaintiff filed the Complaint, asserting ERISA claims against ByteDance and Sedgwick. (See generally Compl.). Plaintiff alleges: (i) denial of benefits under 29 U.S.C. § 1132(a)(1)(B); (ii) retaliation in violation of 29 U.S.C. § 1140; and seeks (iii) equitable relief under 29 U.S.C. § 1132(a)(3). (Id. ¶¶ 37–49). That same day, Plaintiff filed a motion seeking a temporary restraining order and preliminary injunction. (D.E. No. 4). The parties subsequently briefed that motion, (D.E. Nos. 5, 14, 16–18, 29 & 34–36), and the Court thereafter denied Plaintiff’s request for temporary injunctive relief. (D.E. No. 39). On August 21, 2025, ByteDance moved to dismiss certain claims and to compel arbitration of, and stay, the remaining claims. (See ByteDance motion; D.E. No. 24 (“ByteDance Mov. Br.”)). Plaintiff opposed the motion, submitted a declaration in support of his opposition, and later filed a notice clarifying aspects of his opposition.1 (D.E. Nos. 30–32 (opposition memorandum at

D.E. No. 30 (“Pl. Opp. Br.”))). ByteDance filed a reply brief. (D.E. No. 37 (“ByteDance Reply Br.”)). On September 4, 2025, Sedgwick likewise moved to dismiss the Complaint, compel arbitration, and stay the action. (See Sedgwick motion; D.E. No. 33-1 (“Sedgwick Mov. Br.”)). Plaintiff filed a consolidated reply opposing that motion and asserting a sur-reply to ByteDance’s reply brief, (D.E. No. 38 (“Consol. Reply”)), and Sedgwick filed a reply, (D.E. No. 46 (“Sedgwick Reply Br.”)). In addition to his formal opposition papers, Plaintiff filed several motions seeking leave to file supplemental briefing and sur-replies, as well as a motion to strike certain of Defendants’ submissions. (D.E. Nos. 45, 47 & 49). Defendants responded to certain of those submissions and objected to Plaintiff’s supplemental filings on the ground that he had not provided any reason or legal authority supporting the filing of a sur-reply. (See, e.g., D.E. Nos. 48 & 50).2

Thereafter, ByteDance submitted a letter identifying supplemental authority in support of its motion, and Plaintiff responded. (D.E. Nos. 53 & 54). On February 6, 2026, in light of the factual and legal overlap between the two motions, the Court determined that it would resolve them together and administratively terminated ByteDance’s motion for docket-management purposes only, noting that it would resolve that motion on the merits. (D.E. No. 57).

1 The notice was intended to clarify that the opposition was also intended to oppose ByteDance’s motion to dismiss. (D.E. No. 32).

2 The Hon. James B. Clark, U.S.M.J. granted Plaintiff leave to file his consolidated reply and sur-reply and denied Plaintiff’s related motion to strike. (D.E. No. 55). The motions are now ripe for disposition. The Court notes that, in light of Plaintiff’s pro se status, and in the interest of justice, the Court has considered all of the parties’ submissions. II. LEGAL STANDARD A. Rule 12(b)(6) Standard

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Yakov Magdalasov v. ByteDance Inc., Sedgwick Claims Management Services, Inc., (D.N.J. 2026).

Yakov Magdalasov v. ByteDance Inc., Sedgwick Claims Management Services, Inc. (Yakov Magdalasov v. ByteDance Inc., Sedgwick Claims Management Services, Inc.) — published by Counsel Stack Legal Research, free access to 12M+ legal documents.

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