Skip to content

Invest1 publisher3 min readPublished

Two phrases will decide what California's AI workplace laws cost employers

SB 947, signed by Governor Gavin Newsom on September 30, puts a human reviewer on firings and discipline decided primarily by AI from July 1, 2027. Its cost to employers depends on how 'primarily', and SB 951's 'in substantial part', end up being read.

The Investor · Invest desk

Illustration accompanying Two phrases will decide what California's AI workplace laws cost employers

What happened

  • SB 951 amends Cal/WARN so employers must disclose when job losses are caused in substantial part by AI, naming the specific roles affected.
  • AB 1883 bars workplace AI tools that infer workers' emotional states or collect neural data, and its enforcement starts first, on January 1, 2027.
  • SB 947 also obliges employers to give workers written notices about their data rights.
  • The package follows Newsom's October 2025 veto of SB 7, an earlier and broader bill he rejected as overly encompassing.

Compiled by The InvestorSomething wrong?How this is made

Why it matters

  • constraint Emotion-detection and neural-data vendors have no oversight route to keep California workplace customers, and can no longer serve them 93 days after the signing.
  • exposure With hiring covered by the 2025 FEHA rules and monitoring, discipline and layoffs by the 2026 package, an employer's HR software now faces state rules at both entry and exit.
  • decision The 181 days between the two start dates set the order of work: emotion-reading tools come out first, and reviewers go into discipline workflows second.

Crypto Briefing's report on the package spends one line on cost: companies using automated tools for performance management or termination may need to re-evaluate their AI strategies, and adding human reviewers could raise costs [12]. It does not put a figure on that. The figure depends on a threshold. SB 947's review duty applies to decisions made "primarily" by an automated decision system [2]. The same report names that word, along with SB 951's "in substantial part", as the terms that will set how wide the net is [13].

The cost is a count times an hourly rate. Take the discipline and termination cases that cross the threshold and multiply by the reviewer time each one takes. The count can come out more than one way. Read narrowly, "primarily" covers only cases where software acted alone. Those are already barred, because SB 947 separately forbids relying solely on an automated system to discipline or fire [3]. On that reading the review rule adds close to nothing. Read broadly, it covers any case where a score or a flag carried most of the weight, and the reviewer count climbs with every performance cycle. A third outcome is a redesign in which a manager opens each case and the software only recommends, built so the decision falls below the threshold.

I'd expect that third outcome at employers running large HR systems, since it keeps the software and puts the human at the start of the process. The counter-case is that the redesign costs about what a reviewer would have, because a manager reading every file is the same expense under a different job title. The view is wrong if the term is read to reach a ranking that a manager merely signs off on. Then the redesign route closes and the cost scales with case volume.

Complying with SB 951 means putting a statement in a filing [6]. In my view the exposure is consistency. Suppose an employer tells shareholders that automation let it run with fewer people. In California it has then described a disclosure trigger [6], and a notice that leaves AI out of the same cut contradicts the company's own public account. Whether the two accounts can differ comes down to how "in substantial part" is read [13].

The package does not ban AI at work [11], so employers are not being asked to retire their systems or write them off. The money goes on a human step added to software they already run. Employers have 274 days from the September 30 signing [1] to the July 1, 2027 start of the ADS rules [4] [2]. In that window they have to decide which cases cross the line, or rather, find out whether anyone will define the line for them first. Crypto Briefing says employers will be looking for clarity on those terms well before the effective dates [14].

What to watch

  • Any official reading of "primarily" before July 1, 2027, especially whether a software ranking that a manager signs off on counts as a decision made by the system.
  • The first Cal/WARN notices that attribute job losses to AI under SB 951, and how many roles they name.
  • Whether emotion-detection vendors pull their workplace products from California ahead of AB 1883's January 1, 2027 enforcement date.
Loading claim ledger
Loading source directory links
Loading share composer
Loading topic controls
Loading related stories