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N.D. Cal.Procedural orderFiled June 20, 2025

Shwiyhat v. Martin Marietta Materials, Inc.

Judge
Richard Seeborg
Docket
3:24-cv-08815
Court
U.S. District Court · Northern District of California
Pages
4
Civil ProcedureEmployment
In one sentence

In Shwiyhat v. Martin Marietta Materials, Judge Seeborg denied without prejudice leave to amend the complaint to add Reyes De La Torre.

Who this affects

Austen Shwiyhat may pursue a revised amendment concerning his own allegations, but Reyes De La Torre was not added as a plaintiff through this motion. Martin Marietta Materials, Inc. remains the defendant.

What happened

In Shwiyhat v. Martin Marietta Materials, Inc., Austen Shwiyhat asked to amend his employment-discrimination complaint against his former employer. The proposed amendment would add former employee Reyes De La Torre as a plaintiff and include additional allegations about assaults against Shwiyhat.

The proposed complaint alleged that Shwiyhat and De La Torre experienced similar hostile treatment and assaults, but their claims differed in important ways. De La Torre alleged constructive discharge, while retaliation allegations focused on Shwiyhat.

Judge Richard Seeborg denied the motion without prejudice. He said the two plaintiffs could likely have filed together initially, but their claims might need to be separated and would not likely qualify as related cases under the local rules. Shwiyhat may submit a revised amendment containing additional factual allegations about his own claims, without adding De La Torre.

The detailed version

For law students, journalists, and other readers who want the full reasoning

Case
Shwiyhat v. Martin Marietta Materials, Inc. · No. 3:24-cv-08815
Judge
Richard Seeborg
Date
June 20, 2025

Background

Austen Shwiyhat sued his former employer, Martin Marietta Materials, Inc., asserting employment-related claims including harassment, retaliation, and wrongful termination. The opinion states that Shwiyhat worked for Martin Marietta as a plant operator beginning in October 2021, after Martin Marietta acquired the business of his former employer, Lehigh Hanson, Inc. The opinion does not resolve whether Martin Marietta could be liable for events that occurred while Shwiyhat worked for Lehigh Hanson.

Shwiyhat alleged that he did not receive timely meal breaks, that two supervisors made inappropriate and derogatory comments and manipulated work schedules, and that a coworker sexually assaulted him at work in early 2022. He also alleged that the company did not respond appropriately to his reports and that he faced increased hostility and retaliation. After a July 5, 2022, incident involving equipment lockout procedures, he was suspended and ultimately terminated for allegedly violating the company’s Lockout/Tagout policy.

Proposed amendment

Shwiyhat sought leave to file an amended complaint. The proposed amendment added further allegations about physical assaults against Shwiyhat but otherwise did not substantially change his allegations or claims. Its primary change was adding Reyes De La Torre, another former Martin Marietta employee, as a plaintiff.

The proposed complaint alleged that De La Torre experienced the same hostile work environment, comments, treatment by supervisors, and similar physical assaults. It did not allege that De La Torre experienced or reported a specific genital punch, and the retaliation allegations focused on Shwiyhat. De La Torre alleged that the workplace became intolerable and forced him to resign, which he characterized as constructive discharge.

Court’s reasoning

The court explained that amendments are generally allowed liberally so that cases can be decided on their merits. It concluded, however, that Shwiyhat had not shown that adding De La Torre in this case was warranted. The court stated that the two plaintiffs could likely have joined their claims under Federal Rule of Civil Procedure 20(a)(1), which allows permissive joinder in specified circumstances, but that severance could be appropriate to avoid prejudice. The court also cited a prior case involving individual employment claims against a common employer in which severance had been affirmed.

The court further reasoned that, if De La Torre filed a separate case, the two cases likely would not be treated as related under Civil Local Rule 3-12. Similar claims against the same defendant would not necessarily involve substantially the same parties, property, transaction, or event, and the court found no sufficient likelihood of burdensome duplication or conflicting results before different judges.

Disposition

The court denied Shwiyhat’s motion for leave to amend, without prejudice to a revised amended complaint that adds the further factual allegations about Shwiyhat included in the proposed amendment. The court stated that Martin Marietta would be expected to stipulate to an amended complaint that omitted De La Torre and did not otherwise go beyond the proposal submitted with the motion. The court did not decide the merits of Shwiyhat’s or De La Torre’s underlying claims.

The authoritative version

Read the full 4-page opinion on CourtListener, the free public archive maintained by the Free Law Project.

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