By Brandon Thompson, CEO and Co-Founder, MBG Insurance | Updated September 2026
When most excavation contractors think about insurance, they think about general liability. That makes sense. It’s the policy general contractors and developers ask for first, and it covers the claims that come to mind right away, like cutting a water line or damaging a customer’s driveway.
But general liability was never designed to cover your trucks, your equipment, or your employees. For an excavation business, those are often the three biggest exposures you have. Here’s what should sit alongside your GL policy, and why.
1. Commercial Auto: Weight Changes Everything
Excavation contractors don’t drive light vehicles. A three-quarter or one-ton pickup pulling a gooseneck with a mini excavator or skid steer on it can easily cross 10,000 pounds combined, and dump trucks and lowboys go well beyond that. Once you’re in that weight range, several things change.
Personal auto policies don’t fit. A pickup titled to you personally and insured on a personal policy may not be covered when it’s used for business, especially when it’s regularly hauling equipment. The truck belongs on a commercial auto policy.
Heavier vehicles carry more risk, and more regulation. A loaded dump truck or truck-and-trailer combination does far more damage in an accident than a passenger car, and the liability claims reflect that. Vehicles and combinations over 10,000 pounds used in business can also trigger federal and state requirements such as USDOT numbers, and larger combinations may require a CDL. Underwriters look closely at vehicle weight, radius of operation, and driver records when they price these units.
Contract limits are higher. Many general contractors and municipalities require $1,000,000 in auto liability, and a serious accident involving a heavy truck can exceed that quickly. That’s where a commercial umbrella earns its keep.
Trailers need to be listed. Liability generally follows the power unit towing the trailer, but physical damage coverage for the trailer itself usually has to be scheduled. And the machine sitting on that trailer is not covered by your auto policy at all. That’s the job of inland marine.
If you run dump trucks for hire or haul material for others, see our page on dump truck and short-haul insurance, since that operation is underwritten differently than hauling your own equipment to your own jobs.
2. Inland Marine: Protecting the Equipment That Makes You Money
An excavator, dozer, or track loader isn’t a car, and it isn’t a building. Its liability generally falls under your GL policy as “mobile equipment,” but damage to the machine itself needs its own coverage. That’s a contractors equipment or inland marine policy.
Heavy equipment usually isn’t covered by a general liability policy, and most business owners policies aren’t built for it either. A contractors equipment floater follows your machines from the yard, to the trailer, to the jobsite. It can cover losses like:
- Theft, which is one of the most common equipment claims we see, particularly from jobsites left unattended overnight or over the weekend
- Overturn and collision on a slope or unstable ground
- Fire and vandalism
- Damage in transit while the machine is being hauled
A few details worth checking on your policy:
Scheduled vs. unscheduled equipment. Larger machines are typically listed individually with their values. Smaller tools can often be covered on a blanket basis.
Replacement cost vs. actual cash value. On older equipment, an ACV policy will deduct depreciation after a loss. Know which one you have.
Rented and leased equipment. If you rent a machine for a job, the rental agreement likely makes you responsible for it. Rented equipment coverage, and coverage for the cost of renting a replacement while your own machine is down, can keep one loss from stopping every job on your schedule.
Financed equipment. Lenders will usually require coverage and want to be listed as loss payee.
Keep in mind that mechanical breakdown and normal wear and tear are generally excluded. This coverage is for sudden, accidental loss.
3. Workers’ Compensation: Always
Excavation is among the more hazardous classifications in construction. Trench collapses, struck-by incidents, equipment rollovers, and back and shoulder injuries from long days on the ground all show up in excavation claims. Workers’ compensation pays medical bills and lost wages for injured employees and generally protects you from being sued by them.
Missouri requires construction industry employers to carry workers’ comp starting with their first employee. Arkansas has its own thresholds that depend on the type of work and number of employees, so review the details on our Arkansas workers’ compensation page or talk with us before assuming you’re exempt.
Watch your subcontractors. If you hire a subcontractor who doesn’t carry their own workers’ comp, your policy may end up covering their workers, and that shows up as additional premium at audit. Collect a current certificate of insurance from every sub before they start, and make sure it shows current policy dates.
Classification matters. Excavation work carries its own rating classification, and being classified correctly from the start helps avoid audit surprises later. Describe your operations accurately so your policy is written the right way the first time.
Why General Liability Alone Leaves Gaps
Put simply:
- General liability covers damage and injury you cause to others
- Commercial auto covers your trucks and the accidents they’re involved in
- Inland marine covers your equipment
- Workers’ comp covers your employees
An excavation contractor who only carries GL is uninsured for most of the things that can actually put them out of business.
Excavation Contractor Insurance in Missouri and Arkansas
MBG Insurance is an independent agency, which means we compare options from multiple carriers and build a program around how your excavation business actually runs, from a one-person operator with a skid steer to a company running multiple crews, dump trucks, and rented equipment. Learn more on our Excavation Contractor Insurance page.
Ready to review your coverage? Start a quote or call Springfield at (417) 773-7822, Oak Grove at (816) 690-2640, or Bentonville at (479) 350-6862.
Reminder: Everyone’s situation is different. These concepts may not apply to your specific circumstances. We recommend talking with your agent, broker, insurer, or legal counsel about your individual needs, coverage, and exposure.
About the Author
Brandon Thompson is the CEO and co-founder of MBG Insurance and a Certified Work Comp Advisor (CWCA). A Pea Ridge, Arkansas native, Brandon founded Millennium Brokers in 2017 and opened MBG’s Bentonville office in 2026. His areas of expertise include workers’ compensation, high-value homes, lessor’s risk, and tree care risk.