AB 339 introduces new notice requirements for local agencies before issuing certain solicitations or renewing/extending contracts for services that may overlap with bargaining unit work.

This resource page is designed to help agencies understand what the law requires, plan, and implement practical steps to stay compliant. Use the tools and guidance below to support contracting, procurement planning, and labor relations coordination ahead of the law’s effective date.

Primary source (the law itself)

  • Government Code § 3504.1 (AB 339’s new section) — the actual statutory language (notice requirement + exceptions).
  • Chaptered bill text (AB 339, Ortega) — Statutes of 2025, Chapter 687 (official “chaptered” version showing the final enacted text).

Training/slide resource (great for internal briefings)

  • CSAC webinar slides: “AB 339 Explained” (Dec 15, 2025)
    A clean presentation format you can use to brief leadership, HR, labor relations, and procurement staff.

RGS AB 339 Resources

To support public agencies in preparing and complying with AB 339, Regional Government Services (RGS) has developed the following tools and templates. These resources help agencies understand requirements, plan procurement timelines, and implement compliant contracting processes ahead of the law’s effective date (January 1, 2026). 

AB 339 Overview & Frequently Asked Questions (FAQ)
What it is: A summary of AB 339 requirements, applicability, exemptions, and common questions.

AB 339 – 45-Day Written Notice Template
What it is: A customizable notice template for the required written notice to recognized employee organizations/bargaining units.

AB 339 Pre-Proposal / Contract Extension Compliance Checklist
What it is: A step-by-step checklist to guide AB 339 compliance before releasing a solicitation or renewing/extending (and, where applicable, amending) an existing contract.

Key First Steps to Implement AB 339
What it is: Immediate actions agencies should take now, internal coordination, workflow planning, and timeline development.

Strategic Considerations After AB 339 Implementation
What it is: Longer-term planning suggestions (inventory contracted services, review/update job descriptions, and reduce overlap risk).

Need assistance?
RGS can support agencies with AB 339 implementation planning, workflow development, and labor relations coordination.
Contact: Betsy Adams — badams@rgs.ca.gov | 650-587-7300 ext. 43 

Practical guidance/explainers (local government-focused)

  • CSDA (California Special Districts Association) – “2026 New Laws Series, Part 7”
    Explains how AB 339 works, who it applies to, and the implementation issues agencies should plan for.
  • LCW (Liebert Cassidy Whitmore) – AB 339 overview
    Clear plain-language summary and effective date (Jan 1, 2026), with what triggers the notice requirement.
  • Atkinson, Andelson (AALRR) – Notice requirements for contracting out
    More detailed legal alert with labor relations context.
  • Atkinson & Andelson client update (another AB 339 explainer)
    Useful breakdown of what qualifies and what the notice must cover.
  • CalPublicAgencyLaborEmploymentBlog – “45 Days’ Notice…”
    Practical breakdown of the types of actions that trigger AB 339 (RFP/RFQ/renewals & extensions).

Training/slide resource (great for internal briefings)

  • CSAC webinar slides: “AB 339 Explained” (Dec 15, 2025)
    A clean presentation format you can use to brief leadership, HR, labor relations, and procurement staff.