Summary of December 2025 Labor Law Updates for Riverside, California
Here’s your December 2025 roundup of California labor and employment law developments relevant to employees, HR professionals, and compliance leaders. This update — compiled from reputable legal sources — highlights noteworthy cases, policy actions, and regulatory changes that will shape employment rights and employer obligations as we head into 2026. Brought to you by HKM Employment Attorneys.
California continues to push forward a broad agenda of worker protections and transparency measures as 2025 ends. Key court rulings, regulatory changes, and wage updates underscore the need for employers to stay proactive in compliance planning. For questions about how these developments impact your workplace or legal rights, please contact HKM Employment Attorneys — your partner for California labor law guidance.
NLRB v. State of California & PERB — Federal Court Ruling on PERB Authority — Court Ruling
Date: December 26, 2025
Summary: A U.S. federal district court in the Eastern District of California blocked a recently enacted state law that would have expanded the California Public Employment Relations Board’s (PERB) authority to regulate labor relations in the private sector. The court found that permitting PERB to step into areas traditionally governed by the National Labor Relations Act (NLRA) is likely preempted by federal law, and granted the National Labor Relations Board’s (NLRB) request for an injunction. This ruling preserves federal primacy over private-sector labor relations despite California’s effort to fill gaps when the NLRB lacks a quorum.
Implications: Employers and unions should note that California’s attempt to extend state labor board jurisdiction over private-sector labor matters will not take effect — at least for now — due to federal preemption concerns. Ongoing disputes about the boundary between state and federal labor law authority may continue into 2026.
Expanded Pay Transparency & Equal Pay Definitions — Legislative/Reform Developments
Date: December 3, 2025
Summary: New amendments to California’s pay equity and pay transparency laws (not yet effective until January 1, 2026) affect employer obligations:
- A redefined “pay scale” now requires employers with 15+ employees to provide a good faith estimate of expected pay upon hire — not just a range for the position overall.
- The definition of “sex” in equal pay provisions was expanded to include non-binary and gender-diverse identities, reinforcing protections against pay disparities for substantially similar work.
- Additional changes refine bias mitigation training and expand statute-of-limitations mechanics for certain claims.
Implications: Employers should prepare to revise job postings, compensation practices, and internal wage transparency procedures ahead of the 2026 compliance deadlines.
Sierra Pacific Arbitration Ruling — Appellate Labor Case
Date: December 9, 2025
Summary: A California appellate decision determined that the employer waived its right to enforce arbitration in a wage-and-hour class action by engaging in litigation conduct inconsistent with arbitration requirements.
Implications: This underscores the importance of carefully managing pre-arbitration litigation behavior and honoring arbitration agreements to avoid unintended waivers, especially in high-stakes wage disputes.
Minimum Wage Increase Set for January 1, 2026 — Regulatory Update
Date: December 5, 2025
Summary: The California Division of Labor Standards Enforcement confirmed that the state minimum wage will increase to $16.90 per hour for all workers on January 1, 2026. This applies regardless of employer size.
Implications: Employers must update payroll systems, exempt salary thresholds, and wage notices to reflect the new minimum wage beginning in 2026.
Looking Ahead — Effective Dates & Preparedness
Many of the key law changes discussed above (especially pay transparency and expanded pay equity definitions) do not take effect until January 1, 2026. Employers should audit their compensation practices, job postings, and internal policies now to ensure compliance once these provisions become operative.
Conclusion: Looking Back on California’s Labor Law Updates from December 2025
With California courts increasingly focusing on wage theft, workplace discrimination, wrongful termination, contract disputes, whistleblower rights, and data breach incidents, it’s essential to have trusted local representation. At HKM Employment Attorneys in Riverside, Managing Partner Rebecca Rojas and attorney Seungjai (SJ) Oh lead a powerful practice that has secured over $250 million for employees since 2003. Their team handles everything from breach of contract and employment retaliation to ethics investigations, and hostile work environment cases—all under a no‑fee‑unless‑we‑win promise. If recent Riverside rulings resonate with your experience, contact our Riverside office to explore how we can defend your workplace rights.
