For businesses in Santa Fe Springs and throughout Los Angeles County, an occurrence-based commercial general liability (CGL) policy covers incidents that happen during the policy period, regardless of when the claim is actually filed -- even if that claim comes years after the policy has expired.
This is the most common CGL policy structure for small businesses in California and offers significant long-term protection advantages over the alternative: claims-made coverage.
The Core Definition
An occurrence policy triggers coverage based on when the covered incident (the "occurrence") happened, not when the claim is filed. As long as the bodily injury, property damage, or other covered loss occurred while your policy was active, your insurer is obligated to defend and indemnify you, even if:
- •The policy has since expired
- •You have switched carriers
- •The claimant files the lawsuit three years after the incident
This is fundamentally different from a claims-made policy, which only responds if both the incident and the claim filing happen while the policy is active.
Why Occurrence Policies Are the Standard for CGL
The Insurance Information Institute notes that commercial general liability policies are almost universally written on an occurrence basis, while professional liability and directors and officers (D&O) policies are typically written on a claims-made basis.
The reason CGL uses occurrence-based coverage relates to the nature of the risk. A slip-and-fall accident is a discrete event -- it either happened or it did not. The question of who files a lawsuit and when is separate from the underlying incident. Occurrence coverage ensures that an injured party can pursue a valid claim without worrying that the business's insurance lapsed before the lawsuit was filed.
Occurrence vs. Claims-Made: A Direct Comparison
| Feature | Occurrence Policy | Claims-Made Policy |
|---|---|---|
| Trigger for coverage | Date of incident | Date claim is filed |
| Coverage after policy expires | Yes, for incidents during policy period | No (unless tail coverage purchased) |
| Need for tail coverage | Not needed | Often necessary |
| Prior acts coverage | Included (for incidents during active period) | Requires retroactive date |
| Cost | Slightly higher initially | Lower initially, higher over time with tail |
| Common policy types | CGL, commercial auto, homeowner's | Professional liability, D&O, E&O |
A Practical Example
Imagine a contractor in Santa Fe Springs installs a deck in June 2024. The contractor carries an occurrence-based CGL policy from January 2024 to December 2024. In March 2026 -- more than a year after the policy expired -- the deck collapses and injures a homeowner. The homeowner files a lawsuit.
Under an occurrence policy: The 2024 policy responds because the installation (the "occurrence") happened during the policy period. The contractor does not need active coverage in 2026 for the 2024 work to be covered.
Under a claims-made policy: The 2024 policy would NOT respond because the claim was filed in 2026, after the policy expired. The contractor would need to either have a current active policy or have purchased tail coverage when the 2024 policy ended.
This distinction is critical for contractors, builders, and service businesses in the Los Angeles area where latent defect claims can arise years after work is completed.
The Importance of Completed Operations Coverage
Occurrence policies protect against incidents during active operations AND completed operations -- meaning work you have already finished. This is particularly important for:
- •General contractors working on commercial and residential projects
- •Specialty contractors (plumbers, electricians, HVAC) whose installations can fail later
- •Product manufacturers and distributors
Many construction contracts in Los Angeles County require that completed operations coverage remain in force for one to three years after project completion. With an occurrence policy, this protection exists as long as the original policy was active during the construction period.
When Does an Occurrence Policy NOT Help?
Occurrence coverage is powerful but not unlimited. It does not help when:
- •The incident happened before your policy's inception date -- Prior acts from before your first policy are not covered unless you had prior coverage that would have responded.
- •The incident falls under a policy exclusion -- Even occurrence policies have exclusions (professional errors, employee injuries, pollution, auto, etc.).
- •You never had coverage -- An occurrence policy only protects against incidents during an active coverage period. If you were uninsured when an incident occurred, no later purchase of insurance will cover that event.
Occurrence Policy Limits and How They Apply
Like all CGL policies, occurrence-based policies have a per-occurrence limit and an aggregate limit. Key points:
- •The per-occurrence limit applies independently to each separate incident, regardless of when the claim is filed.
- •The aggregate limit refreshes each policy year. A claim filed in 2026 for a 2024 incident draws against the 2024 policy's aggregate, not the 2026 policy.
- •If a 2024 incident causes the 2024 aggregate to be exhausted, subsequent 2024 claims may not be fully covered, even if you carry ample insurance in 2026.
This is why maintaining adequate limits every year matters -- not just in the year claims are filed, but in the year work is performed.
Learn more about choosing the right limits at how much general liability insurance do I need.
Frequently Asked Questions
Is an occurrence policy always better than a claims-made policy for CGL?
For most small businesses, yes. Occurrence coverage provides longer-term protection without requiring tail coverage when you switch carriers or retire the policy. The slight premium premium is usually worth it.
What is tail coverage, and do I need it with an occurrence policy?
Tail coverage (also called extended reporting period coverage) is purchased when a claims-made policy ends to extend the window for filing claims. With an occurrence policy, tail coverage is not needed -- the policy continues to respond to covered incidents indefinitely after expiration.
If I switch CGL carriers, does my occurrence policy still protect past work?
Yes. When you switch from one occurrence-based CGL carrier to another, your prior carrier remains responsible for incidents that occurred during their policy period, even after you've moved to a new carrier.
How far back can a claim go on an occurrence policy?
There is no time limit set by the occurrence policy itself. However, California's statute of limitations sets maximum time frames for filing specific types of lawsuits. For personal injury, the statute of limitations is typically two years from the date of injury. For property damage, it is three years. A claim filed outside the statute of limitations may not be actionable regardless of your policy.
Does my general contractor require occurrence-based CGL?
Most general contractors in Los Angeles County require subcontractors to carry occurrence-based CGL coverage, often with completed operations coverage maintained for one to two years after project completion. Always review the contract's insurance requirements before submitting a bid.
Key Takeaways
An occurrence-based CGL policy is the standard structure for commercial general liability coverage and provides long-term protection by covering incidents that happen during the policy period, even if claims are filed years later. For Santa Fe Springs and Los Angeles County contractors, service businesses, and retailers, occurrence coverage eliminates the need for tail coverage and provides peace of mind that past work remains protected.
When shopping for CGL coverage, confirm that your policy is occurrence-based and that it includes completed operations coverage -- both are essential components for most California small businesses.
External resources: Insurance Information Institute -- Occurrence vs. Claims-Made | CA Department of Insurance -- Business Insurance
