Follows Form
Also known as: Follow-Form, Strict Follow Form
If GL excludes a claim type, a follow-form umbrella also excludes it. Critical implication: your umbrella is only as broad as your weakest underlying policy. "True Umbrella" variants include limited drop-down coverage for claims excluded by underlying.
In practice, a strict follow-form excess policy sitting over the standard ISO Commercial General Liability form (CG 00 01) inherits that form's exact exclusions, so any underlying coverage gap carries straight up into the excess layer.
Real-world scenario
Summit Mechanical, a 22-employee HVAC contractor in Ohio, carries three primary policies: a general liability policy with a $1,000,000 per-occurrence limit and a $2,000,000 aggregate, a commercial auto policy with a $1,000,000 combined single limit, and employers liability coverage at $1,000,000. To protect against a catastrophic loss that could exceed those limits, Summit buys a $5,000,000 follows-form umbrella for an annual premium of $8,400.
Because the umbrella follows form, it copies the terms, conditions, and definitions of each underlying policy rather than writing its own. When a Summit technician's rooftop rigging fails and a 400-pound condenser falls onto a customer's parked car and a bystander, the injured party wins a $3,200,000 judgment. The underlying general liability policy pays its full $1,000,000 per-occurrence limit first; the umbrella then responds in excess, covering the remaining $2,200,000 above its $1,000,000 attachment point. Defense costs of $450,000 are handled by the primary insurer, and because the umbrella's coverage grant mirrors the underlying form, there is no gap or disputed exclusion.
Had Summit instead bought a stand-alone excess policy with its own narrower wording, a $175,000 slice of the loss might have fallen into a coverage gap, leaving the contractor to pay out of pocket. Summit's total cost for the year — $14,600 in primary premiums plus the $8,400 umbrella — bought a seamless $6,000,000 tower of protection, and the $25,000 the umbrella carrier reimbursed in expert-witness fees came through without a single coverage argument.
How it affects your premium
Follows-form umbrella and excess pricing is driven less by the umbrella itself and more by the quality and limits of the policies beneath it. Key cost drivers include:
- Underlying limits and structure: A higher attachment point (e.g., $1,000,000 vs. $500,000 underlying) lowers the umbrella's exposure and premium, while thin underlying limits raise it.
- Class of business: High-hazard operations like roofing, trucking, or crane work pay far more per $1,000,000 of limit than a clerical office, because the underlying loss frequency and severity are higher.
- Requested limit: The first $5,000,000 of umbrella limit costs more than each additional layer; a $10,000,000 tower is not double the price of $5,000,000 because higher layers are less likely to be reached.
- Schedule of underlying policies: The more primary lines the umbrella must follow (GL, auto, employers liability), the broader the exposure and the higher the premium.
- Loss history: Prior large claims or a poor loss ratio signal severity risk and push rates up.
- Auto fleet size and radius: Because auto liability drives most catastrophic verdicts, a large or long-haul fleet materially increases follows-form pricing.
Common misconceptions
Myth: A follows-form umbrella covers anything my business could ever be sued for.
Reality: It only covers what the underlying policies cover — if a loss is excluded on the primary general liability form, the follows-form umbrella excludes it too. It broadens limits, not the scope of coverage.
Myth: Follows form and drop-down coverage are the same thing.
Reality: They are related but distinct. Following form means the umbrella mirrors the underlying terms; drop-down coverage is when the umbrella pays in place of exhausted or absent primary insurance.
Myth: Because it follows form, I don't need to maintain the required underlying limits.
Reality: Letting an underlying limit lapse creates a self-insured retention-sized gap you must fund yourself before the umbrella responds, exactly at the attachment point stated in the schedule.
Frequently asked questions
Does a follows-form policy cover legal defense costs?
What's the difference between a follows-form excess policy and a stand-alone umbrella?
Can one follows-form umbrella sit over several different policies?
What happens if my underlying policy has an exclusion the umbrella doesn't mention?
Do I need to keep the underlying limits the umbrella requires?
Sources cited
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