Top 10 US Workers Compensation Insurers

The US workers compensation market generates $60 billion in net written premiums annually. The industry has posted underwriting profits for 7 consecutive years through 2025, driven by improved workplace safety, medical cost management, and lower-than-expected claim frequency as automation reduces hazardous manual tasks.

Location: US2026159 viewsJul 17, 2026 Updated Oct 3, 2026

Top10Grid rankings are decided by votes, not algorithms — use the buttons below to move this list.

Be the first

Top10Grid Editorial

Editorial team

Current Rankings

0
#1
Travelers
Travelers is the nation's market share leader in workers compensation, with roughly $4.5B in premiums. Its loss-sensitive programs for large accounts align insurer and employer incentives through experience rating, and its nurse triage program routes an injured worker to a registered nurse at first report of injury.
NCCI Insurance Journal Travelers
3
source: wikipedia
Details →
0
#2
Berkshire Hathaway (GUARD Insurance)
Berkshire Hathaway GUARD Insurance Companies, acquired by Berkshire in 2012 and based in Wilkes-Barre, Pennsylvania, underwrite workers' compensation and other commercial lines for small and mid-size employers, distributed through independent agents.
PC360 Insurance Journal GUARD
3
source: wikipedia
Details →
0
#3
Liberty Mutual
Liberty Mutual is one of the largest US writers of workers' compensation, serving large national accounts through guaranteed-cost and loss-sensitive programmes, with on-site risk-control consultants forming part of the offering.
NCCI Insurance Journal Liberty Mutual
3
source: wikipedia
Details →
0
#4
Zurich North America
Zurich North America writes $2.8B in workers' compensation premium, largely through loss-sensitive structures like large deductible and retrospective programs, which serve multinational corporations managing self-insured retentions above $500,000 per occurrence. It pairs these with an in-house risk engineering team that carries out on-site workplace safety assessments.
PC360 Insurance Journal Zurich
3
source: wikipedia
Details →
0
#5
Nationwide
Nationwide began in 1926 as the Ohio Farm Bureau's own auto insurer and is still a Columbus-based mutual owned by its policyholders. That history is why it remains one of the few national carriers with real appetite for farm and agribusiness workers compensation, alongside a broad small-business book covering contractors, retail and light manufacturing.
NCCI Insurance Journal Nationwide
3
source: wikipedia
Details →
0
#6
Employers Holdings
Employers Holdings dominates the small-business workers comp arena as a pure-play specialist with $700 million in premiums. Listed on NASDAQ (EIG), it serves over 100,000 small employers in low-to-medium hazard industries, leveraging proprietary AI-powered underwriting for fast quotes and precise pricing. Unlike diversified insurers, its exclusive focus on small accounts ensures tailored risk assessment and competitive rates.
PC360 Insurance Journal Employers
3
source: wikipedia
Details →
0
#7
ICW Group
ICW Group leads with dividend plans that return premiums to employers with favorable loss experience. Writing $1.5 billion in WC premiums from San Diego, this Western US regional specialist also provides the SafetyFirst program at no extra cost, offering training resources to reduce claims. Its regional focus allows deeper local risk insights. For Western employers, ICW's blend of loss prevention support and premium rebates delivers tangible savings and safety improvements.
PC360 Insurance Journal ICW Group
3
source: wikipedia
Details →
0
#8
AmTrust Financial
AmTrust Financial excels in specialty workers comp for staffing, healthcare, and retail sectors, with $2 billion in premiums. Taken private in 2018 for $2.7 billion after resolving prior reporting issues, it now operates a global platform spanning 8 countries. For staffing firms, AmTrust's international reach and niche expertise provide an alternative to ICW Group's regional dividend model.
PC360 Insurance Journal AmTrust
3
source: wikipedia
Details →
0
#9
CNA Financial
CNA Financial is a Chicago-based commercial property and casualty insurer, majority owned by Loews Corporation, writing workers' compensation for mid-market and large accounts with complex exposures alongside its managed-care and risk-control services.
PC360 Insurance Journal CNA
3
source: wikipedia
Details →
0
#10
Hartford Financial
The Hartford, founded in Connecticut in 1810, is one of the largest US writers of workers' compensation insurance, with its strength concentrated in small and mid-sized commercial accounts placed through independent agents. It broadened its specialty lines with the $2.1 billion acquisition of Navigators Group in 2019.
NCCI Insurance Journal The Hartford
3
source: wikipedia
Details →

Current Rankings

Share this list

159 views

Get ranking updates

Get the weekly finance rundown

Only lists published since the last email. Join the early readers.

Only Top 10s published in the last 7 days
One email a week — and none at all in a week with nothing new
Unsubscribe in one click

No spam. One email per week. Unsubscribe anytime.

Readers Also Ranked

More Lists Like This

Top 10 US Robo-Advisors 2026

#1Betterment
#2Wealthfront
#3Vanguard Digital Advisor

Top 10 US Microfinance Institutions

#1Grameen America
#2Accion Opportunity Fund
#3Kiva

Best Personal Loans in Hong Kong (2026): Lowest APR, Highest Limits & Fastest Approvals

#1WeLab Bank Personal Instalment Loan
#2WeLend Personal Loan
#3BEA Tax Season Loan

Top 10 European Quantitative Finance Firms

#1Man AHL
#2Winton Group
#3Two Sigma Europe

Frequently asked questions

What is workers' compensation insurance?

Workers' compensation insurance provides medical benefits and wage replacement to employees injured or ill due to their job, while protecting employers from lawsuits.

Which companies are typically among the top 10 US workers' compensation insurers?

Top insurers often include The Hartford, Travelers, Liberty Mutual, Zurich, Chubb, Berkshire Hathaway, American International Group (AIG), Nationwide, State Farm, and CNA Financial.

Is workers' compensation insurance mandatory for all employers in the US?

Workers' compensation is mandatory in nearly every state for most employers, though requirements vary by state, number of employees, and industry.

What factors influence the cost of workers' compensation insurance?

Cost is primarily determined by industry classification, payroll size, claims history, and state regulations, with higher-risk jobs leading to higher premiums.