What Commercial General Liability Really Covers — and the Exclusions That Surprise Owners

Commercial general liability is the policy nearly every California business starts with, and the one most owners understand the least. The word "general" fools people into thinking it is catch-all coverage. It is not. CGL is broad but specific, and knowing where it stops is what keeps a business from discovering a gap only after a claim is denied.

What commercial general liability actually covers

A standard CGL policy is built on the industry ISO commercial general liability form and provides three main buckets of coverage.

1. Bodily injury to third parties

If a customer, visitor, or member of the public is physically hurt because of your business, CGL pays their medical expenses and any resulting legal judgment or settlement. The classic case is the slip-and-fall: someone trips in your store or on your job site and is injured.

2. Property damage to third parties

If your business damages property belonging to someone else, CGL responds. A plumber's error floods a client's condo. A contractor's crew cracks a homeowner's driveway. The policy pays to repair or replace the damaged property, up to your limits.

3. Personal and advertising injury

This covers non-physical harm like libel, slander, copyright infringement in your advertising, and similar offenses. If a competitor claims your ad copied their slogan, this is the coverage that responds.

Plus: your legal defense

Crucially, CGL pays your defense costs, attorneys, court fees, expert witnesses, even when a claim is groundless. Defense is often paid in addition to your limits, which matters because the cost of fighting a lawsuit can rival the payout itself.

Typical CGL limits

Most small-business CGL policies are written at $1 million per occurrence / $2 million aggregate. "Per occurrence" is the most the policy pays for any single claim; "aggregate" is the most it pays across the whole policy year. For contractors, a $1M/$2M limit is the common baseline that general contractors and public jobs demand, with an umbrella added when a contract requires more.

The exclusions that surprise business owners

This is where owners get caught. These are real, everyday losses that a CGL policy is not designed to cover.

Your own injured employees

CGL covers third parties, not your own workers. When an employee is hurt on the job, that is workers' compensation, a separate and legally required policy in California for nearly every employer. See the state's Division of Workers' Compensation. Assuming CGL covers employee injuries is one of the most dangerous misunderstandings a business owner can have.

Damage to your own property

CGL pays for damage to other people's property, not yours. If a fire damages your building, equipment, or inventory, that is commercial property insurance. Many owners combine GL and property in a Business Owner's Policy (BOP) for this reason.

Your professional mistakes

If a client loses money because of your advice, design, or service, that is a professional liability (errors and omissions) claim, and CGL excludes it. Architects, consultants, accountants, and design-build contractors all need E&O alongside GL.

Auto accidents

Once a vehicle is involved, CGL steps aside. Business use of cars and trucks belongs to commercial auto insurance. If your driver causes a crash, your CGL will not respond.

The "your work" and "your product" exclusions

CGL generally does not pay to redo your own faulty workmanship or replace your defective product itself. If you install a roof wrong, CGL may cover resulting water damage to the owner's furniture, but not the cost to tear out and rebuild the roof, that is your business's cost to fix its own work. This surprises contractors constantly.

Intentional acts and known problems

Deliberate harm and losses you knew about before the policy started are excluded. Insurance covers fortuitous, accidental events, not intentional damage or pre-existing problems.

Other common exclusions to watch

• Pollution and environmental contamination (needs specialized pollution coverage).
• Liquor liability if you serve or sell alcohol (needs a liquor endorsement or policy).
• Cyber and data breach losses (needs cyber liability).
• Professional health/medical services and certain high-hazard operations, depending on your class.

How the gaps get filled

If the loss is...	The right policy is...
An employee injured on the job	Workers' compensation
Your own building, equipment, inventory	Commercial property / BOP
A client's financial loss from your advice	Professional liability (E&O)
A vehicle accident on business use	Commercial auto
A data breach or cyberattack	Cyber liability
Limits above your GL when a contract demands more	Commercial umbrella / excess

The takeaway

Commercial general liability is the backbone of a business insurance program, but it is a backbone, not the whole body. It handles the physical harm your operations can do to outsiders and defends you when you are sued for it. Everything else, your employees, your property, your professional work, your vehicles, your data, lives in policies built for those risks. The businesses that stay protected are the ones that map their real exposures to the right coverage before a claim, not after.

---

This article is general information, not insurance or legal advice. Policy forms, endorsements, and exclusions vary by carrier. Read your policy and talk with a licensed agent about your specific situation.