Ohio Contractor Insurance Requirements: Liability, Workers' Comp, and City Minimums

Two Insurance Systems, When Required

Ohio contractors may deal with two distinct insurance requirements that can't be substituted for each other: workers' compensation through the state BWC fund, and commercial general liability from a private insurer. When a requirement applies, missing it can block your ability to register and pull permits.

Workers' Compensation: The BWC State Fund

Ohio runs a monopolistic workers' compensation system. You cannot buy workers' comp from a private insurance company — it must come from the Ohio Bureau of Workers' Compensation (BWC). This surprises out-of-state contractors who are used to shopping for coverage on the open market.

Enrollment uses Form U-3, with a minimum opening deposit of $120. Premiums are based on your NCCI classification codes, payroll volume, and claims history, averaging approximately 0.98% of total payroll statewide.

Coverage is mandatory for any business with one or more employees. Active corporate officers are classified as statutory employees under ORC 4123.01 and must be covered. Sole proprietors and single-member LLCs with no employees can opt in voluntarily, but most municipal building departments expect to see BWC proof regardless.

General Liability: Three Different Thresholds

Ohio has three general liability thresholds depending on what kind of work you're doing and where:

OCILB specialty trades: $500,000 minimum for commercial electrical, HVAC, hydronics, plumbing, and refrigeration contractors. The policy must be in the exact name of a single contracting company, and the OCILB must be listed as certificate holder.

HCSSA residential work: $250,000 minimum for residential construction, remodeling, or renovation contracts valued at $25,000 or more under ORC Chapter 4722. For covered non-cost-plus projects, a copy of the insurance certificate must be attached to the written contract.

Municipal registration: Varies by city. Columbus requires $300,000 per person and $500,000 per occurrence. Cleveland requires $200,000 with specific sub-limits ($50,000 per person, $100,000 per occurrence for bodily injury, $50,000 for property damage). Cincinnati requires $100,000/$300,000.

If you work across multiple jurisdictions and both state and local tracks, you need a policy that meets the highest threshold — typically $500,000 per occurrence if you hold an OCILB license.

Certificate Naming Requirements

Cities require specific language on your certificate of insurance, and getting it wrong delays your registration:

• Columbus: "City of Columbus, Department of Building & Zoning Services" as certificate holder
• Cleveland: "City of Cleveland" named as both "additional insured" and "certificate holder"
• Cincinnati: Provide proof of coverage meeting the city's minimum limits

The OCILB requires itself listed as certificate holder for state specialty trade licenses.

Getting Coverage

General liability policies for Ohio contractors typically run $1,200–$4,000+ per year for a new business, depending on your trade, annual revenue, and claims history. Specialty trades (electrical, plumbing) generally cost more than general construction. Your bond company and insurance company are usually different providers — don't assume your bond covers liability or vice versa.

Our Ohio General Contractor License Guide maps out the full insurance picture — BWC enrollment, general liability thresholds by jurisdiction, and how to get your certificates named correctly on the first try.

See more Ohio guides →