Governor Ned Lamont signed Connecticut SB 5 into law on June 2, 2026, making Connecticut the sixth US state to regulate how employers use AI in hiring and workforce decisions. Enacted as Public Act 26-15 and known as the Connecticut Artificial Intelligence Responsibility and Transparency Act, or CART Act, the law leans on transparency rather than a mandated audit. It requires written notice before automated tools drive major job decisions, adds an AI disclosure to the state's layoff process, and closes the door on blaming an algorithm for discrimination.
The obligations phase in over two years, so employers have time to prepare, but the groundwork starts now. Here is what the CART Act covers, when each rule takes effect, and how to build a compliance plan that holds up if the Attorney General comes calling.
What Connecticut SB 5 Changes for Employers
SB 5 is a broad AI law. It reaches frontier models, AI companions, synthetic media, and online safety for minors. For HR and talent teams, the operative pieces are narrower: rules for automated employment-related decision technology, a new layoff-disclosure duty, and an amendment making clear that AI use is never a defense to a discrimination claim.
Three ideas anchor the employment provisions. Employers must tell workers and applicants when an automated tool shapes a consequential job decision. Developers must give employers the information they need to comply. And accountability stays with the employer, even when the tool comes from a vendor. Warden AI reads this as a transparency-first regime with a strong, if indirect, incentive to test hiring tools for bias.
Defining Automated Employment-Related Decision Technology
The law applies to any technology that uses computation to process personal data and produce an output, such as a score, classification, or recommendation, where that output is a substantial factor in a consequential employment decision. That covers tools that screen resumes, rank candidates, or flag workers for discipline or termination.
Everyday software is carved out. Word processors, spreadsheets, databases, web hosting, storage, firewalls, anti-virus, networking, and navigation tools fall outside the definition because they do not judge people. A database that merely stores names is exempt; a system that ranks those names is not.
The covered decisions are the consequential ones: hiring, promotion, compensation, discipline, termination, and the terms of employment. Routine scheduling, productivity tracking, and workplace health-and-safety tools are not the target.
Employer Notice and Disclosure Obligations
The notice obligations take effect October 1, 2027. Before an employer uses a covered tool to make or substantially inform a consequential decision, it must give the affected person written notice in plain language. That notice must identify the tool by trade name, state the purpose of its use, describe the categories and sources of personal data the tool processes, and provide a contact for questions. Where a tool produces an adverse decision, the person can request an explanation and access to, and correction of, the data used.
Developers carry their own duty. They must supply employers with the information needed to meet these obligations, including how the technology works and what data it relies on. An employer cannot write an accurate notice without that input, so strong AI assurance starts with this exchange.
The WARN Act AI Disclosure Requirement
Starting October 1, 2026, employers filing a Connecticut WARN Act notice for a plant closing or mass layoff must tell the Department of Labor whether the workforce reduction is connected to AI or other technological change. The Labor Commissioner will prescribe the form and content of that disclosure.
This is one of the first state rules to tie layoff reporting to automation, and it signals how seriously Connecticut is tracking AI's effect on jobs. Employers should build an AI-cause check into every layoff plan now, so the answer is documented before a notice is filed.
AI Is Not a Defense to Discrimination
The provision with the sharpest teeth is an amendment to Connecticut's anti-discrimination law. Effective October 1, 2026, an employer cannot escape a discrimination claim by pointing to a vendor's algorithm. Delegating the decision to software does not delegate the liability.
The same amendment offers a path to reduce exposure. Courts and the Commission on Human Rights and Opportunities may treat an employer's anti-bias testing as a mitigating factor, weighing its quality, recency, and scope. Among the current state AI laws, this is the clearest statutory endorsement of proactive bias audits. It is why Warden AI treats continuous testing as the core of defensible AI hiring, not an optional extra.
How Connecticut SB 5 Compares to Other State AI Laws
Connecticut sits alongside a growing set of state AI laws, but it takes a distinct path. It does not name a mandatory bias audit the way New York City does. Instead it relies on notice, transparency, and the discrimination amendment, and it adds a layoff-disclosure duty that peer laws lack.
For the full mechanics of each regime, see Warden AI's dedicated regulation pages and the multi-state compliance guide rather than relying on a summary row.
Enforcement and Penalties Under the CART Act
The Connecticut Attorney General has exclusive authority to enforce the CART Act's notice and transparency rules. A violation is treated as an unfair trade practice under the Connecticut Unfair Trade Practices Act, which opens the door to civil penalties. Before enforcing violations alleged on or before December 31, 2027, the Attorney General must give a 60-day period to cure.
One nuance matters. There is no private right of action for the notice provisions, so workers cannot sue directly over a missed notice. But the discrimination amendment runs through Connecticut's civil rights process, which preserves a worker's ability to bring a discrimination claim. The law also carries whistleblower protections for people who report AI safety or bias concerns. There is no minimum-employee threshold, so small employers face the same rules as large ones.
Building a Connecticut SB 5 Compliance Strategy
The CART Act rewards employers who prepare early and document as they go. A workable plan tracks the phased dates and turns each obligation into a repeatable process.
- Map your AI systems. Inventory every tool used for hiring, promotion, discipline, and termination, and flag which ones are a substantial factor in a decision.
- Request developer documentation. Get the technical and data details vendors must provide so your notices are accurate.
- Draft plain-language notices. Cover trade name, purpose, data categories and sources, a contact, and the adverse-decision explanation and data-access rights. Live October 1, 2027.
- Add an AI check to WARN filings. Document whether any layoff is connected to AI or technological change. Live October 1, 2026.
- Run regular anti-bias testing. The discrimination amendment credits testing as a mitigating factor, so keep records of its quality, recency, and scope.
- Keep humans in the loop. Ensure automated output is never the sole basis for a consequential decision.
Following these steps builds a record of good faith. Connecticut does not mandate a specific bias audit, but the discrimination amendment makes independent bias testing the strongest evidence an employer can show if the Attorney General or the Commission on Human Rights and Opportunities examines its hiring tools.
Prepare for Connecticut SB 5 with Warden AI
Connecticut SB 5 gives employers a clear runway, with layoff disclosures live in 2026 and notice rules in 2027. Warden AI helps you map your hiring tools, stand up the required notices, and run the continuous bias testing that turns compliance into a competitive advantage. Start now and you will have the records and the confidence to meet each deadline.
Book a Connecticut SB 5 compliance review with Warden AI.
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Connecticut SB 5 FAQs for Employers
When does Connecticut SB 5 take effect for employers?
The rules phase in. The WARN Act AI-layoff disclosure and the anti-discrimination amendment take effect October 1, 2026. The employee and applicant notice obligations, and the developer information-sharing duty, take effect October 1, 2027.
Does Connecticut SB 5 require a bias audit?
No. Unlike New York City's law, the CART Act does not mandate a named bias audit. But courts and the Commission on Human Rights and Opportunities may credit anti-bias testing as a mitigating factor in a discrimination claim, so regular testing remains the strongest protection.
What counts as automated employment-related decision technology?
Any technology that processes personal data to produce an output, such as a score or recommendation, that is a substantial factor in a consequential job decision like hiring, promotion, discipline, or termination. Ordinary tools like word processors and spreadsheets are exempt.
Who enforces the CART Act, and can workers sue?
The Connecticut Attorney General enforces the notice and transparency rules as unfair trade practices, with a 60-day cure period for early violations. There is no private right of action for the notice provisions, but the law's discrimination amendment preserves a worker's ability to bring a discrimination claim through Connecticut's civil rights process.
