TL;DR: California AB 1898 cleared Assembly Appropriations on August 13, 2026 in a 5-2 vote, the same session that advanced SB 947 and SB 951. If Newsom signs it, every California employer must give 90 days written notice before deploying any workplace AI tool and cannot use the tool until affected workers return a signed acknowledgment. A companion bill, AB 1883, bans AI surveillance that reads emotions or collects neural data entirely. For tools already in use, notice is due February 1, 2027.
On August 13, 2026, California's Assembly Appropriations Committee advanced four workplace AI bills in a single session. The two that drew immediate attention were SB 947 (the No Robo Bosses Act, banning sole ADS reliance in termination decisions) and SB 951 (extending WARN Act notice to 90 days for AI-driven layoffs). The two that drew less attention -- but carry broader operational impact -- were AB 1898 and AB 1883.
AB 1898, the Artificial Intelligence Transparency at Work Act, does not limit what employers can do with AI. It requires that before you do anything with it, you tell every affected worker exactly what it is, what it collects, and what decisions it affects, then wait 90 days and collect their signatures. AB 1883 is narrower: it prohibits two specific AI surveillance capabilities -- emotional state recognition and neural data collection -- regardless of how much notice you give.
Both cleared the committee 5-2. Both need full Assembly floor votes by August 31 and Newsom's signature by September 30. If signed, they take effect January 1, 2027.
AB 1898: What the 90-day notice requires
The bill defines "workplace AI tool" broadly. Any automated decision system or AI surveillance tool used in any employment context -- scheduling, performance review, monitoring, hiring screening, productivity tracking -- falls within scope. The tool does not need to be branded as AI. If it uses machine learning or statistical modeling to produce outputs that affect employment decisions, it is covered.
The 90-day notice requirement applies to every deployment of a covered tool to any worker who could be affected. "Affected" is interpreted broadly in the committee analysis: any worker whose role involves the tool's deployment area, not just workers directly evaluated by it.
The notice must include:
- The purpose of the AI tool
- A description of the worker data the tool collects or processes
- A description of which employment decisions may be affected by the tool's outputs
- The general locations where the tool will operate
- Any third parties who will receive worker data from the tool
- The vendor name and model (or version) of the tool being deployed
- Job displacement timelines: whether any roles or tasks will be eliminated or automated, and when
- Any quotas measured or enforced by the AI tool
This last item -- quotas -- is particularly pointed. If your productivity monitoring platform tracks output against AI-generated targets, that quota structure must be disclosed before deployment.
The signed acknowledgment
This is the part of AB 1898 that HR and legal teams should read carefully. Employers cannot deploy the workplace AI tool until every affected worker returns a signed acknowledgment confirming they received and understand the notice.
The bill is explicit: "The employer shall not use the workplace AI tool subject to this section until affected workers return their signed notices."
That is not a disclosure process. That is a deployment gate controlled by worker signatures. In a workforce with 50 workers, if 48 return signed acknowledgments and 2 do not, the employer cannot deploy the tool to anyone until the outstanding signatures are resolved.
The practical implications are significant:
For new tools, the 90-day clock starts when notice is issued. If even one affected worker is slow to return the acknowledgment, that delays the deployment for everyone. Employers planning to roll out AI scheduling, monitoring, or performance tools in Q4 2026 need to issue notice by October 2026 at the latest to hit a January deployment window -- assuming the bill is signed in September.
For existing tools, the bill provides a transition window. Employers must issue the required notice for tools already in use by February 1, 2027.
The annual AI tool inventory
Beginning February 1, 2028, and annually thereafter, employers must maintain and provide to workers a complete list of all workplace AI tools currently in use.
The inventory requirement has a specific disclosure for new tools: for each workplace AI tool added in the preceding year, the employer must describe whether any jobs or job tasks will be replaced or automated by the tool and the expected timeline of those impacts.
This means employers need an internal AI tool register maintained at the HR or compliance level, updated when tools are added or retired, with job displacement analysis attached to each new deployment.
AB 1883: What is prohibited, not just disclosed
AB 1883 operates differently from AB 1898. Where AB 1898 is a disclosure and process law, AB 1883 is a use prohibition. Two categories of AI surveillance capability are banned regardless of notice:
Emotional state recognition. Tools that recognize, make inferences about, or predict an individual's emotional state are prohibited in the workplace. This covers a growing category of products: productivity monitoring platforms that analyze facial expressions during video calls, voice analytics tools that infer sentiment from call recordings, and engagement monitoring software that flags low sentiment scores.
Neural data collection. Tools that collect neural data -- including brainwave data, biosensor outputs used to infer cognitive states, or any biometric measure tied to neurological function -- are prohibited.
The $500 per violation penalty applies under AB 1883 as well. Because the bill covers every worker affected by the prohibited surveillance tool, the per-violation exposure compounds quickly. An employer monitoring 200 workers with an emotion-recognition platform faces $100,000 in civil exposure per violation, plus potential punitive damages and attorney fees.
Exemptions exist: tools used for safety purposes and tools required for federal contracts involving national security or military operations are excluded.
The penalty math under AB 1898
The $500 per employee per violation structure in AB 1898 means that penalties scale with workforce size.
For an employer with 100 California workers:
- Failing to provide required notice before deploying one AI tool: $50,000
- Deploying before collecting all signed acknowledgments: $50,000
- Both violations on the same tool: up to $100,000
For an employer with 500 workers, each violation reaches $250,000. The Labor Commissioner investigates and issues citations, but workers can also bring civil actions seeking punitive damages and attorney fees independently.
How this fits with California's other August 13 bills
AB 1898 and AB 1883 joined SB 947 and SB 951 in the August 13 Assembly Appropriations session. Together, the four bills form an interlocking framework:
- SB 947 (No Robo Bosses Act): bans sole ADS reliance in termination or discipline decisions, requires human corroboration and written notice after any ADS use in adverse employment actions
- SB 951 (Worker Technological Displacement Act): extends WARN Act notice to 90 days when AI or automation displaces 25+ workers, requires right of first bid for displaced workers
- AB 1898 (AI Transparency at Work): requires 90-day advance notice and signed acknowledgment before deploying any workplace AI tool, plus annual inventory
- AB 1883 (Workplace Surveillance Tools): prohibits AI surveillance capable of reading emotions or collecting neural data
No single one of these bills covers the full scope of what the others do. An employer that complies with SB 947's human review requirement is still subject to AB 1898's notice requirement before deploying the ADS in the first place. An employer that provides AB 1898 notice cannot use that notice to authorize the emotional-state tools banned by AB 1883.
What employers with California operations should do now
Step 1: Build the inventory now. You will need a complete list of workplace AI tools for AB 1898's 2028 disclosure requirement, but building it now is prerequisite to doing any of the other steps. Every tool in your HR, performance management, scheduling, monitoring, and productivity stack that uses ML or statistical modeling belongs on this list.
Step 2: Classify each tool under AB 1883 first. For each tool on your inventory, answer: does it recognize or infer emotional states? Does it collect neural data? If yes to either, legal counsel should assess whether the tool can be modified to remove that capability or whether it needs to be discontinued before January 1, 2027. This step has a hard deadline: you cannot notice-and-consent your way into compliance with AB 1883.
Step 3: Map affected workers per tool. AB 1898's notice obligation runs to every worker who could be affected by the tool's deployment. For each tool, identify the population before drafting notice.
Step 4: Draft the notice templates. Each tool requires a separate notice document covering all required disclosures. Prepare templates now so that when the bill is signed, you can issue notice immediately and start the 90-day clock.
Step 5: Build a signed-acknowledgment workflow. The deployment gate is worker signatures, not a checkbox on a consent screen. Decide how acknowledgments will be collected, stored, and audited. Factor in workers who are on leave, have limited English, or work across multiple locations.
Step 6: Plan the notice calendar for existing tools. If you have five workplace AI tools already deployed, you have five sets of notices due by February 1, 2027. Issue them on the same date for operational simplicity, then manage the acknowledgment collection process across all five simultaneously.
How AB 1898 interacts with existing California AI law
AB 1898's notice requirement overlaps with California's ADMT framework (requiring pre-use notices for automated decision technology in consumer contexts) but applies to the employment relationship specifically. Workers are not consumers under the ADMT rules, so AB 1898 fills a gap in notice requirements that the ADMT framework does not cover.
AB 1898 also operates alongside, not instead of, federal EEOC obligations. Disclosing that you use an AI hiring screening tool under AB 1898 does not resolve the federal disparate impact question. Employers still need the vendor bias documentation and four-fifths rule analysis the EEOC requires, now with an additional California disclosure layer on top.
For employers already running a California ADMT compliance program with pre-use notices and risk assessment templates, AB 1898 adds the employment context that ADMT was not designed to cover. The two programs will share some infrastructure -- the AI tool register, the notice templates, the data inventory -- but serve different populations (consumers vs. workers) under different legal frameworks.
Related Reading
- California SB 947 and SB 951: No Robo Bosses and Worker Displacement Act
- AI Employee Monitoring Disclosure Laws 2026: State-by-State Tracker
- California ADMT Employer Compliance Templates
- EEOC AI Hiring Guidance 2026: 8-Step Employer Checklist
- Workday AI Lawsuit: HR Screening Checklist for Employers
Sources: AB 1898 bill text (California Legislative Information), AB 1883 bill text (California Legislative Information), Ogletree: California Workplace AI Notice and Disclosure Bill Would Impose Hefty Penalties, National Law Review: California Workplace AI Notice and Disclosure Bill, Transparency Coalition: AI Legislative Update August 14 2026, HR Works: California's Proposed AI Transparency at Work Act
