It might surprise most Americans to know that small business is anything but. In fact, 99.9% of businesses are small. That’s tens of millions of entrepreneurs who need the right kind of insurance to get their doors open and keep them that way.
Commercial general liability insurance is a great start, regardless of what industry you're in. But the liability policy you carry today may not be the one that pays for today's work. Depending on how a policy is written, coverage can hinge on when something went wrong or when someone finally files a claim.
That timing question is the whole difference between occurrence and claims-made insurance. Get it wrong, and a claim can land in a gap between policies, years after the work is done. Let's explore how each form works and where businesses get caught.
Key Takeaways: Occurrence vs. Claims-Made Coverage
- Occurrence policies follow the date of the incident. If the injury or damage happened while the policy was active, that policy responds, even if the claim arrives years after it ends.
- Claims-made policies follow the date of the claim. The claim must be made while the policy or its tail coverage is active, and the incident must have happened on or after the policy’s retroactive date.
- Most general liability is written on an occurrence basis. Professional liability, D&O, EPLI and cyber coverage are usually claims-made.
- Retiring, closing, selling or switching carriers can open a gap in claims-made coverage unless you protect your retroactive date or buy tail coverage.
The Difference Between Claims-Made and Occurrence Insurance Policies
An occurrence-based policy looks at when the injury or damage happened. A claims-made policy looks at when the claim was first made against you. Everything else, from tail coverage to retroactive dates, follows from that one main difference.
| Feature | Occurrence | Claims-Made |
|---|---|---|
| What triggers coverage | Injury or damage during the policy period | A claim first made during the policy period |
| When the claim can arrive | Any time later, even after the policy ends | During the policy period or an extended reporting period |
| Retroactive date | None | Excludes incidents before that date |
| Tail coverage | Not needed | Often needed when coverage ends or changes |
| Typical policies | Most general liability and umbrella policies | Professional liability, D&O, EPLI, cyber |
Policy terms vary by carrier. Your declarations page shows which form and retroactive date apply to your coverage.
What Is Occurrence Insurance?
Occurrence insurance covers incidents that happen while the policy is in force, regardless of when the claim is filed. Most general liability policies work this way. If someone is injured on your jobsite in 2026 and sues in 2029, your 2026 policy responds, even if you've changed carriers since then.
Better still, occurrence insurance often comes with a kind of tail coverage built in—you can still file claims even after your policy has expired. The caveat is that the claim must have “occurred” while the policy was in force. You still need to notify the carrier promptly once you learn about an incident, and that year's policy limits are the limits you get.
Why Contractors Almost Always Carry Occurrence Coverage
Construction claims rarely arrive on schedule. Here's a hypothetical: a framing contractor finishes a custom home in 2023, and the homeowner sues in 2027 after hidden framing defects surface as cracked drywall and a sagging floor.
Under an occurrence form, the policy in force when that damage occurred responds, even if the framer switched carriers in between.
That's why completed operations coverage, the part of a general liability policy that covers your finished work, matters as much as the coverage you carry on the job. Many construction contracts require occurrence-form general liability with completed operations coverage, sometimes kept in force for years after the project wraps.
Our
guide to general contractor insurance covers the rest of what those contracts typically require.
What Is Claims-Made Insurance Coverage?
A claims-made policy covers claims first made against you during the policy period, as long as the incident behind them happened on or after the retroactive date. Some forms, called claims-made and reported, also require you to report the claim to the carrier before the period ends.
This is the standard form for:
Cyber coverage
These policies cover advice, decisions and data rather than physical injury or property damage, and a financial loss from a bad recommendation or a missed deadline is hard to pin to a single date.
Using the claim date gives everyone a clear answer about which policy responds. Late or "long-tail" claims happen for both types of coverage, but they're handled differently: under occurrence, the claim goes back to the policy that was active during the year of the damage, and under claims-made, it goes to whatever policy is active when the claim arrives.
Retroactive Dates and Prior Coverage
If you've been baffled by terms like "retroactive date" or "prior acts," you're not alone. The retroactive date is the earliest date an incident can happen and still be covered, and as long as you renew without a gap, it carries forward year after year.
Prior acts coverage is how that date survives a change in insurance companies: the new carrier agrees to honor your old retroactive date. If it won't, everything before the new date falls into a gap. That's one way a lower premium can end up costing far more than it saves.
What Happens When a Claims-Made Policy Ends
Claims-made coverage works well as long as it continues. The trouble only starts when it stops or changes.
Consider an accounting firm whose CPA retires at the end of 2026 and lets the firm's professional liability policy lapse. In 2027, a former client sues over an error on a 2025 tax return.
The work happened while the policy was active, but the claim arrived after it ended. Without tail coverage, there's no protection.
What Is Tail Coverage?
Tail coverage (also called an extended reporting period endorsement) extends the time you have to report claims after a claims-made policy ends. It applies only to incidents between the retroactive date and when the policy expires, and it doesn't cover any new work.
Most claims-made policies include a short reporting window automatically. Longer tails are optional, carry an additional premium and usually must be purchased soon after the policy ends, so plan to purchase tail coverage whenever you retire, sell or switch carriers.
Which Is Better for My Business — Claims Made or Occurrence?
The better policy for your business comes down to numerous specifics and circumstances. In many cases, the type of coverage offered is already predetermined by the carriers; however, when both forms are on the table, as they often are for
medical practice and some contractors' pollution or professional coverage, weigh the following:
How long claims take to surface: The longer the gap between your work and a potential lawsuit, the more the coverage form matters.
What your contracts require: Project owners, lenders and clients may specify the form, the limits and how long coverage must stay in place.
How the cost changes over time: Claims-made premiums typically start lower but step up over the first several years, and tail adds a cost at the end. Occurrence premiums tend to start higher but remain relatively stable.
At first blush, cost seems like the deciding factor. Because of its flexibility, occurrence insurance is generally more expensive than claims-made. But of course, claims-made insurance demands a timely filing, or you may risk your coverage. That's why the bigger question is timing: when your claims are likely to arrive and whether you'll still have a policy in place to answer them.
Ultimately, what works for general contractors may not work for tech startups. Thankfully, an independent insurance broker can take your specific circumstances into account. Pepper, Johnstone & Company works with multiple insurance providers, so we can compare policy forms, retroactive date terms and tail options side by side, then structure your coverage so each policy hands off cleanly to the next.
Build Coverage Around When Claims Actually Arrive
Occurrence ties a claim to the year the incident occurred, while claims-made coverage ties it to the year the claim arrives. The businesses that avoid gaps plan those handoffs before a carrier change, a new contract or a retirement forces the issue.
Talk Through Your Insurance Coverage Timeline With an Independent Insurance Broker
The numerous options and policy details of business insurance can be dizzying, but thankfully, you’re not alone. At
Pepper, Johnstone & Company, we’ve been doing this for more than half a century, matching your needs with the right policy at the right price.
Request a quote online or call
866-381-5821 today.