Massachusetts business insurance requirements

Massachusetts requires workers' compensation from the first employee and enforces it with stop-work orders that shut a job site the day they are served. There is no state fund; employers the market turns down go to an assigned risk pool run by the state's own rating bureau. Employers also fund Paid Family and Medical Leave, whose cost split changes on January 1, 2027, and the state raised its auto liability minimums in July 2025.

Workers' compensation requirements

"Every employer shall provide for the payment to his employees" of comp, either through an insurer, a self-insurance group or a self-insurance license from the Department of Industrial Accidents (M.G.L. c. 152, §25A). There is no headcount threshold. Anyone in the service of another under a contract of hire counts, except a short list of carve-outs: commission-only real estate salespeople, certain direct sellers, lease-paying taxi drivers and people whose work is outside the usual course of the employer's business (§1(4)). If you pay people on a 1099, read independent contractors and workers' comp: the misclassification risk.

Owner rules are narrow. A corporate officer or director who owns at least 25% of the stock may opt out, but only by filing a written waiver with the Department. Sole proprietors and partnerships are covered only if they choose to buy coverage. Seasonal, casual and part-time domestic workers, defined as under 16 hours a week, are elective. See can owners and officers exclude themselves from workers' comp?.

Enforcement is fast. When the Department finds an uninsured employer, it serves a stop-work order that takes effect immediately and requires the business to buy coverage and pay $100 for each day it was out of compliance. An appeal suspends the order, but if the hearing goes against the employer, the penalty becomes $250 a day. Separately, failing to insure carries a criminal fine of up to $1,500, up to a year in jail, or both, and for a corporation the president or treasurer answers for it. State and local agencies must withhold business licenses and building permits without proof of coverage, and a losing bidder can sue a competitor that won a contract by skipping comp (§25C).

Contractors pay for uninsured subs. If a subcontractor has no coverage, the insurer of the contractor above it must pay the sub's injured employees as if they were its own insured's workers (§18). The premium auditor will then charge for that payroll, which is why general contractors collect a certificate of insurance from every sub and keep it current.

Massachusetts has no state fund. WCRIBMA, the state's own rating bureau rather than NCCI, files rates and runs the Massachusetts Workers' Compensation Assigned Risk Pool for employers that cannot buy coverage voluntarily (WCRIBMA). WCRIBMA also produces intrastate experience mods. For the basics, see workers' compensation insurance: how it works and assigned risk and residual markets for workers' comp.

Disability and paid leave mandates

Massachusetts has no separate short-term disability mandate; medical leave benefits come through Paid Family and Medical Leave under M.G.L. c. 175M. For 2026 the contribution is 0.88% of eligible wages up to the Social Security wage base: 0.70% for medical leave and 0.18% for family leave. Employers with 25 or more covered individuals may withhold up to 40% of the medical contribution and all of the family contribution, so they pay at least 0.42% themselves. Smaller employers owe no employer share and remit 0.46% (Department of Family and Medical Leave).

That split is about to flip. Chapter 101 of the Acts of 2026, approved June 12, 2026, swaps the 40% and 100% figures in §6, so employers may withhold all of the medical contribution and only 40% of the family contribution (St. 2026, c. 101, §§25-26). The Department says the change takes effect January 1, 2027 and is meant to soften the effect of recent IRS guidance on how benefits are taxed. Check the 2027 rate sheet before you set payroll. Employers may instead meet their obligations through a private plan approved by the Department (c. 175M, §11). See state disability and paid family leave programs: every mandate in 2026.

Commercial auto requirements

For policies issued or renewed on or after July 1, 2025, compulsory coverage is $25,000 per person and $50,000 per accident for bodily injury (c. 90, §34A) and $30,000 for property damage (§34O), up from $20,000 and $40,000 for bodily injury. Massachusetts is also a no-fault state: personal injury protection pays up to $8,000 per person regardless of fault. Business vehicles are bound by the same minimums, but a $30,000 property damage limit will not cover a serious multi-car loss; most commercial accounts carry $1 million. Interstate carriers follow FMCSA insurance requirements and filings for motor carriers; see commercial auto insurance: what it covers and what it leaves out.

The business insurance market in Massachusetts

Nor'easters and winter storms are the recurring catastrophe. FEMA declared major disasters for the March 2018 winter storm and flooding (DR-4372) and, most recently, the severe winter storm and snowstorm that began February 22, 2026 (DR-4919). Coastal properties also face hurricane deductibles. The Massachusetts Property Insurance Underwriting Association, the state's FAIR Plan, offers a commercial property program alongside homeowners and dwelling fire for applicants the voluntary market declines (MPIUA); 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).

Special insurance brokers, as Massachusetts calls surplus lines brokers, pay 4% of gross premiums less returns for Massachusetts home-state insureds, with a sworn annual statement due January 31 (c. 175, §168). See surplus lines taxes, stamping fees and diligent search.

Liability law that affects premiums

Massachusetts uses modified comparative negligence. A plaintiff recovers if their negligence is "not greater than the total amount of negligence" of the defendants, so a plaintiff 51% at fault gets nothing, and assumption of risk is abolished as a defense (c. 231, §85). Tort claims, including personal injury and property damage, must be filed within three years (c. 260, §2A); contract claims within six (§2).

Chapter 93A raises the stakes in commercial disputes and claim handling. A court can award two to three times actual damages for a willful or knowing unfair or deceptive practice, or for a bad-faith refusal to grant reasonable relief after a written demand (c. 93A, §9). In construction, c. 149, §29C voids any clause requiring a subcontractor to indemnify a party for injury or damage the sub did not cause, so upstream parties lean on additional insured endorsements explained.

Insurers based in Massachusetts

• Liberty Mutual is a mutual holding company based in Boston; it wrote $19.93 billion in commercial lines in 2025 by NAIC data.
• The Hanover has its home office in Worcester and wrote $4.21 billion in commercial lines in 2025.

Where to get help

• Massachusetts Division of Insurance (mass.gov/orgs/division-of-insurance): toll free 877-563-4467; Consumer Service Unit 617-521-7794. File a complaint against an insurer, agent or adjuster through the Consumer Service Unit.
• Department of Industrial Accidents (mass.gov/orgs/department-of-industrial-accidents): Public Information Office 800-323-3249 inside Massachusetts, 857-321-7470 outside; main Boston office 617-727-4900. It enforces coverage, issues stop-work orders and handles disputed claims.
• Department of Family and Medical Leave (mass.gov/orgs/department-of-family-and-medical-leave): 833-344-7365, for contributions and private plan exemptions.

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