SB 1455: California’s 2028 Workers’ Comp Mandate for All CSLB Contractors (What Every Licensed Contractor Needs to Know)

TLDR: SB 1455 in One Glance

SB 216 (2022) added five high-hazard CSLB classifications to California’s mandatory workers’ compensation list effective January 1, 2023, and set January 1, 2026 as the date the requirement would expand to every CSLB classification. SB 1455 (2024) delayed that universal mandate to January 1, 2028 and preserved a no-employee exemption pathway that SB 216 was scheduled to eliminate. CSLB is required to build a verification process for that exemption by January 1, 2027.

If you have been operating as a sole proprietor with no employees and no workers’ comp policy, this is the structural shift that matters most. By 2028, you will generally need either an active workers’ comp policy, a verified exemption, or an approved Certificate of Self-Insurance to maintain an active CSLB license.

The Short Version: What’s Changing and When

California already requires workers’ compensation for many contractors under existing law. SB 216 (Dodd, 2022) expanded the requirement to five high-hazard classifications effective January 1, 2023 and scheduled a universal mandate to follow on January 1, 2026. SB 1455 (Ashby, 2024) is a CSLB sunset extension bill that pushed the universal mandate back by two years and added a verification framework for the no-employee exemption.

By January 1, 2028, every active CSLB-licensed contractor is generally expected to maintain workers’ compensation insurance, hold an approved Certificate of Self-Insurance, or file a verified exemption.

Official references:

• California Legislative Information
• Contractors State License Board
• Department of Industrial Relations

A Quick Refresher: SB 216 (What’s Required Today)

Before understanding SB 1455, you need to understand the current baseline.

The Five Trades Required to Carry WC Today

Under SB 216, five CSLB classifications have been required to carry workers’ compensation insurance regardless of employee status, effective January 1, 2023:

• C-8 Concrete
• C-20 Warm-Air Heating, Ventilating and Air-Conditioning (HVAC)
• C-22 Asbestos Abatement
• C-39 Roofing
• D-49 Tree Service

This applies regardless of whether the contractor has employees. A sole-proprietor C-39 roofer with zero employees is required to carry coverage today, the same as a C-39 roofer running a 15-person crew.

What SB 216 Actually Does (And What It Doesn’t)

For the five classifications above, the no-employee exemption is not available. The contractor must hold:

• An active California workers’ compensation policy, or
• An approved Certificate of Self-Insurance from DIR

Proof must be on file with CSLB at license issuance and renewal under Business and Professions Code §7125.

The SB 216 Compliance Reality

In practice, SB 216 forced contractors in those five classifications who had previously operated without coverage to build workers’ comp into their operating cost structure. SB 216 also set January 1, 2026 as the date the universal mandate would extend to all CSLB classifications, with the no-employee exemption preserved only for true joint ventures.

That is the policy foundation SB 1455 modified.

What SB 1455 Actually Changes (And When)

SB 1455 is a CSLB sunset extension bill, signed in September 2024, that adjusts the SB 216 timeline rather than expanding it.

The 2028 Mandate: Every CSLB Classification

SB 1455 delayed the universal workers’ compensation requirement from January 1, 2026 to January 1, 2028. By that date, the framework is generally expected to look like this:

• All CSLB license classifications must carry active WC, hold approved self-insurance, or file a verified exemption
• The no-employee exemption is preserved beyond joint ventures, subject to verification
• Proof must be on file at license activation and renewal

The Verification Framework (2027)

SB 1455 directs CSLB to establish a process by January 1, 2027 to verify that applicants and licensees without employees actually qualify for the no-employee exemption. This is added through new Business and Professions Code §7125.7. Audits, sworn statements, and other verification methods are part of the framework being developed.

In other words, 2026 is no longer the cliff. But the runway is shorter than it looks, because misstating no-employee status during verification will carry penalties.

Statutory Authority

SB 1455 builds on amendments to:

• Business and Professions Code §7125 (amended)
• New Business and Professions Code §7125.7 (verification framework)
• Related CSLB enforcement rules
• DIR workers’ compensation compliance standards

Primary references:

• SB 1455 Bill Text
• DIR Self-Insurance Plans Unit

What Counts as Compliance

Compliance after January 1, 2028 will typically mean one of the following:

• An active California workers’ compensation policy
• A Certificate of Self-Insurance approved by DIR
• A verified exemption filed with CSLB confirming no employees and ineligibility for required-coverage classifications

SB 216 vs SB 1455: A Side-by-Side Comparison

💬 Broker’s Note (Pascal): The five trades affected by SB 216 represent some of the highest WC class-code rates in California. Adding the rest of the CSLB classifications under SB 1455 will pull in many trades with much lower base rates. Most sole-proprietor contractors I talk to expect their WC premium to be far higher than it actually quotes once we shop the market for their specific class code.

Who’s Affected and Who Isn’t

Sole Proprietors With No Employees

This is the most affected group. Under SB 1455, sole proprietors who plan to claim the exemption will generally need to clear CSLB’s verification process once the framework launches. Sole proprietors who do not qualify, or who choose not to complete verification, will need active workers’ compensation coverage to maintain license status.

Contractors With Employees

Already subject to workers’ compensation requirements under existing California law. SB 1455 does not change that obligation.

Inactive License Holders

Inactive license holders generally are not required to maintain WC coverage unless they perform contracting work. Reactivation may require proof.

LLCs, Corporations, and Partnerships

These entities already face stricter WC expectations because of officer inclusion provisions and employee classification rules. The 2028 framework does not relax those expectations.

C-8, C-20, C-22, C-39, and D-49 Contractors

Already required to carry WC today under SB 216. Status is unchanged under SB 1455.

Out-of-State Contractors Working in California

Out-of-state contractors performing work in California are generally subject to CSLB licensing rules and WC requirements once licensed or registered. CSLB has a specific exemption form (13L-50) for qualifying out-of-state licensees who do not employ California residents.

License Consequences: What Happens If You Are Not Compliant

Suspension at Renewal

If WC documentation is not on file at renewal, or if a required certification lapses, CSLB can place the license in inactive or suspended status until resolved. Under BPC §7125.4, certain WC certification failures result in automatic suspension. Reference: CSLB workers’ comp information.

Bid and Permit Implications

Many California project owners and permitting agencies require proof of WC before:

• Awarding contracts
• Issuing permits
• Approving subcontractor onboarding

A suspended license also affects mechanic’s lien rights and the ability to collect on completed work in some circumstances.

What Active License Status Actually Requires

Active status typically requires:

• Valid license bond
• Fee compliance
• Required insurance filings, including WC where applicable

💬 Broker’s Note (Pascal): Most contractors underestimate how quickly a missing workers’ comp filing can block revenue. I have seen six-figure bids delayed or lost because a general contractor could not verify a sub’s compliance at onboarding. The insurance itself is rarely the problem. The timing of the filing is. If you wait until 2027 to think about 2028, you will be competing for underwriting capacity at the worst possible time.

The Cost: What WC Actually Costs a California Sole Owner

Workers’ comp pricing in California is not flat. It is driven by classification, payroll assumptions, and risk exposure.

How WC Premium Is Calculated for Sole Owners

Carriers typically estimate:

• Imputed payroll minimums or owner inclusion payroll
• Classification-based risk rates
• Experience and claims history

Class Code Matters More Than Most Contractors Realize

The difference between a painting classification and a roofing classification can be multiples in annual premium. WCIRB classification determines the rate, and accurate contractor class code selection protects you from audit surprises later.

Cost Ranges by Common CSLB Classification

These ranges are illustrative. Actual quotes depend on carrier, owner inclusion vs exclusion election, payroll, claims history, and territory. Reference: WCIRB rate filings.

What Drives Cost Up or Down

• Jobsite risk exposure
• Residential vs commercial mix
• Payroll reporting structure
• Claims history
• Classification accuracy
• Owner inclusion or exclusion election