Connecticut business insurance requirements

Connecticut requires workers' compensation from the first employee, and it is one of the few states where knowingly going without it can be charged as a felony. Employees fund the state's paid leave program through a 0.5% payroll deduction, and auto minimums sit at 25/50/25. Hartford is still the insurance capital: The Hartford, Travelers' property-casualty companies and HSB all run from the city, and W. R. Berkley is headquartered in Greenwich.

Workers' compensation requirements

The Act defines an employer as anyone "using the services of one or more employees for pay" (Conn. Gen. Stat. 31-275(10)), and every such employer must insure its liability or qualify to self-insure (31-284(b)). The Workers' Compensation Commission adds that out-of-state employers must cover employees working in Connecticut. Coverage comes from licensed carriers, individual self-insurance or a group self-insurance organization (WCC).

Owners get choices. A sole proprietor is not covered unless they accept the Act by written notice. Corporate officers, LLC members and partners may elect to be excluded using the Commission's Forms 6B, 6B-1 and 75. The statute also leaves out household workers regularly employed 26 hours a week or less, casual workers hired outside the employer's trade, and family members living in the employer's home, unless their wages are included in the payroll the premium is based on. See can owners and officers exclude themselves from workers' comp?.

Penalties stack up. When a Treasurer's investigator finds an uninsured employer, an administrative law judge assesses a civil penalty of at least $500 per employee or $5,000, whichever is less, and up to $50,000, then $100 for each day the employer stays out of compliance, capped at another $50,000. An owner, partner, LLC principal or corporate officer who knowingly and willfully fails to insure is guilty of a class D felony (Conn. Gen. Stat. 31-288). Misclassifying employees as independent contractors or understating headcount to cut premium is also a felony and triggers a Labor Department stop work order (31-76a); see independent contractors and workers' comp: the misclassification risk.

Contractors run into the requirement at the permit counter. Before a local building official issues a permit, they must see proof of comp for every employee working on the site; the only exceptions are sole proprietors and property owners who are not acting as a general contractor or principal employer (31-286b). General contractors should collect a certificate of insurance from every sub, because an uninsured sub's workers can become the GC's claim.

There is no state fund. NCCI files loss costs and administers the assigned risk plan for employers the voluntary market will not write. NCCI's filing for January 1, 2026 proposed a 3.8% cut in voluntary loss costs, and its September 11, 2026 filing proposes a 4.9% cut in loss costs and a 5.8% cut in assigned risk rates for January 1, 2027 (NCCI). The Insurance Department issues the approved figures as Commissioner's Orders. For the coverage itself, see workers' compensation insurance: how it works.

Disability and paid leave mandates

Connecticut has no state short-term disability program. It does run CT Paid Leave, which covers most employers with one or more workers in the state. The program is employee-funded: employers deduct 0.5% of pay and remit it to the CT Paid Leave Authority until the worker reaches the Social Security contribution limit, and the board kept the rate at 0.5% for 2026 (CT Paid Leave). Benefits run up to 12 weeks in a 12-month period, with two more weeks for incapacity during pregnancy (CT Paid Leave). Employers can apply to provide a private plan with equal or better benefits. The program replaces income but does not itself protect the job; that comes from federal and Connecticut FMLA. See state disability and paid family leave programs: every mandate in 2026.

Commercial auto requirements

Every auto liability policy must carry at least $25,000 per person and $50,000 per accident for bodily injury and $25,000 for property damage (Conn. Gen. Stat. 38a-335, referencing 14-112). Those are personal-auto numbers that also bind business vehicles; most commercial accounts carry a $1 million combined single limit. Owners of commercial vehicles who cannot get coverage have access to the state's auto residual market plan under 38a-329. For-hire interstate carriers need at least $750,000 under 49 CFR 387.9; see FMCSA insurance requirements and filings for motor carriers and commercial auto insurance: what it covers and what it leaves out.

The business insurance market in Connecticut

Coastal wind is the catastrophe exposure underwriters watch. The Connecticut FAIR Plan, formally the Connecticut Property Insurance Placement Facility, writes basic named-peril, actual cash value coverage for property in insurable condition, including mercantile and manufacturing risks and apartment buildings of five or more units. Commercial building limits top out at $1 million for fire-resistive construction, $700,000 for masonry and $200,000 for frame. Dwellings within 2,600 feet of the shoreline carry a separate 5% hurricane deductible. The Plan also runs the Coastal Market Assistance Program (C-MAP). Most businesses will want a special-form policy from the voluntary market; see FAIR Plans and residual markets for commercial property. NFIP commercial flood policies top out at $500,000 building and $500,000 contents, and the program is authorized only through December 11, 2026 (FEMA).

Surplus lines licensees pay a 4% tax on gross premiums, quarterly on February 1, May 1, August 1 and November 1 (Conn. Gen. Stat. 38a-743). See surplus lines taxes, stamping fees and diligent search.

Liability law that affects premiums

Connecticut follows modified comparative negligence: a plaintiff recovers only if their negligence is "not greater than the combined negligence" of the defendants, so a plaintiff found 51% at fault recovers nothing. Each defendant pays only its proportionate share of economic and noneconomic damages, though a court can reallocate a share that proves uncollectible (Conn. Gen. Stat. 52-572h). In construction, 52-572k voids any clause that makes a party indemnify the promisee against the promisee's own negligence, but it leaves insurance contracts alone, which is why owners lean on additional insured endorsements explained rather than indemnity alone.

Filing deadlines: two years from when an injury to a person or property is sustained or discovered, and never more than three years from the act or omission (52-584); six years on a written contract (52-576).

Insurers based in Connecticut

• The Hartford lists its corporate address at One Hartford Plaza in Hartford; it was the largest U.S. workers' comp writer by 2025 NAIC data, with $14.61 billion in commercial premiums.
• Travelers underwrites through property-casualty companies domiciled in Connecticut at One Tower Square, Hartford; it was the largest U.S. commercial lines writer in 2025 ($27.13 billion).
• W. R. Berkley is headquartered in Greenwich and wrote $10.24 billion in commercial lines in 2025.
• HSB, the equipment breakdown specialist owned by Munich Re, is based in Hartford.

Where to get help

• Connecticut Insurance Department (portal.ct.gov/cid): 860-297-3800, toll free 800-203-3447. File a complaint online through the Department's consumer pages; it also handles questions on comp premium audits and publishes Commissioner's Orders on comp rates.
• Workers' Compensation Commission (portal.ct.gov/wcc): 860-493-1500, or 860-223-9675 toll free within Connecticut. It handles claims, self-insurance approvals and coverage verification, not insurance sales.
• CT Paid Leave Authority (ctpaidleave.org) for employer registration, contributions and private plan applications.

Requirements change. Confirm your own obligations with the agency or a licensed broker, and compare states with the workers' comp and benefits requirements by state.