12.5 Commercial Auto Endorsements
Key Takeaways
- Drive Other Car (DOC) endorsement extends liability, med-pay, UM, and physical damage to a named individual using a non-owned auto — essential for an executive who has only company cars and no personal auto policy.
- Hired Auto and Employee-as-Insured endorsements broaden the form to cover rented vehicles and make employees insureds for non-owned use; Hired Auto Physical Damage adds damage to rented autos.
- Mobile Equipment and the Covered Autos definition interact: self-propelled equipment subject to motor-vehicle registration is an auto; equipment used off-road is typically mobile equipment under the CGL, not the auto policy.
- Pollution liability is largely excluded; the broadened-pollution and rental-reimbursement endorsements restore narrow coverage and add a per-day/maximum rental sublimit.
- Audit, additional-insured, and waiver-of-subrogation endorsements address contractual risk transfer; commercial auto premiums may adjust at audit based on actual exposure.
Drive Other Car (DOC)
The Drive Other Car (DOC) endorsement extends the named individual's protection to autos the business does NOT own. It is written for an executive or owner who drives only company-furnished autos and therefore has no personal auto policy of their own.
DOC can add liability, auto medical payments, uninsured/underinsured motorist, and physical damage for the named individual (and often the spouse and resident family) while using a non-owned auto, such as a rented car on vacation. Trap: DOC is keyed to a named individual on the schedule, not to the business at large; it fills the personal-use gap a company-car-only driver would otherwise have.
DOC works hand-in-hand with Symbol 9 thinking. Symbol 9 protects the employer when an employee uses a personal auto for business, but it does nothing for the executive personally on personal trips. DOC reverses the perspective — it protects the individual rather than the company, which is why both are frequently present on a single account that furnishes company cars to its officers.
Hired and Non-Owned Auto Endorsements
Many small businesses do not own autos but still have exposure from rentals and employee cars:
- Hired Auto Liability — extends liability to autos the business rents, leases, or borrows (matching Symbol 8 exposure).
- Hired Auto Physical Damage — adds Comprehensive/Collision to rented autos, often with a stated limit per auto.
- Employee as Insured / Non-Owned Auto Liability — makes the employer (and sometimes the employee) an insured for liability arising from employee-owned autos used in the business (Symbol 9 exposure).
Trap: Standard Symbol 9 protects only the employer's vicarious liability. The employee-as-insured endorsement is required to extend the employer's policy to also protect the employee.
Pollution, Rental Reimbursement, and Mobile Equipment
The base form excludes most pollution. Endorsements adjust this and other gaps:
| Endorsement | Effect |
|---|---|
| Broadened Pollution (CA 99 48) | Restores narrow coverage for pollutants that are part of, or in transit on, the covered auto |
| Rental Reimbursement (CA 99 23) | Pays a per-day amount (e.g., $30/day, $900 max) for a substitute auto while a covered auto is repaired after a physical-damage loss |
| Lessor/Additional Insured (CA 20 01) | Names a lessor or financier as insured/loss payee on a leased auto |
| Towing and Labor (CA 99 03) | Adds or increases towing/labor at the disablement site |
Mobile equipment note: self-propelled equipment subject to compulsory motor-vehicle registration is an auto; equipment used solely off public roads (e.g., a forklift, bulldozer) is mobile equipment insured under the CGL, not the auto form.
Risk Transfer and Audit Endorsements
Commercial contracts routinely require the auto policy to be modified:
- Additional Insured — adds a contracting party (e.g., a shipper) as an insured for liability arising from the named insured's covered autos.
- Waiver of Transfer of Rights (Waiver of Subrogation) — the insurer waives its right to recover from a party the insured agreed in a contract not to sue.
- Primary and Noncontributory wording — makes the named insured's policy pay first, without sharing with the additional insured's own coverage.
Audit: the inception premium is a deposit premium on auditable policies; because vehicles are added and deleted mid-term, the final premium is adjusted at expiration based on actual exposure. Worked point: if a $9,000 deposit policy's audit shows 20% more vehicle-months than estimated, the additional premium due is roughly $9,000 x 0.20 = $1,800.
Hired/Non-Owned and Drive-Other-Car in Context
The most-tested commercial auto endorsements fill gaps the base symbols leave.
| Endorsement | Fills this gap |
|---|---|
| Hired Auto (Symbol 8) | Autos the business rents/leases short-term |
| Non-Owned Auto (Symbol 9) | Employees' own cars used for business |
| Drive Other Car (DOC) | Executive/owner driving a non-owned auto when the business has no personal auto policy |
| Individual Named Insured | Extends personal-auto-style coverage to an individual under a commercial policy |
Exam trap: Non-owned auto liability protects the business when an employee's car is used for company errands - it does not cover damage to the employee's car. The employee's own PAP is primary for their vehicle; the business's non-owned coverage is excess for the business's liability.
Why These Matter
A company that never owns a vehicle still has auto liability the moment an employee runs a business errand in a personal car or rents a truck for a move. Hired and non-owned (HNOA) coverage is therefore essential even for office-only businesses. DOC solves the reverse problem - an executive who has company cars but no personal policy needs coverage when borrowing a friend's auto.
Pollution, Rental Reimbursement, and Audit Mechanics
Several commercial auto endorsements address narrow but tested exposures.
| Endorsement | Effect |
|---|---|
| Pollution Liability - Broadened (CA 99 48) | Restores limited coverage for pollutants being transported by a covered auto |
| Rental Reimbursement | Pays for a substitute vehicle after a covered loss |
| Mobile Equipment | Clarifies which self-propelled equipment is auto vs. CGL |
| Waiver of Subrogation | Required by many shipping/lease contracts |
Exam trap: The base commercial auto pollution exclusion is broad; the CA 99 48 endorsement buys back coverage for pollutants the auto is transporting (a fuel-tanker spill), but not for stationary site pollution, which belongs to a separate environmental policy.
Commercial auto premiums are often auditable when based on a fluctuating exposure base (such as a fleet that grows mid-term); the audit endorsement lets the insurer adjust premium to actual exposure at term-end, the same mechanism used in workers comp and general liability.
A corporate president drives only company-owned vehicles and has no personal auto policy. She wants liability and physical-damage protection while renting a car on personal trips. Which endorsement best fits?
An auditable business auto policy is written with a $12,000 deposit premium. At audit, actual vehicle-months are 25% higher than estimated. Approximately what additional premium is due?