Verifying Tree Service Insurance: Explained by Arborists
Before any chainsaw starts, verify your tree service carries the right insurance. Here's exactly what to check and why it matters.
- Tree services must carry both general liability and workers' compensation insurance before any work begins. A Certificate of Insurance must be verified directly with the carrier — not just accepted from the contractor. Owner-only workers' comp policies may leave day laborers and subcontractors completely uncovered on your property. Policy expiration dates and aerial work exclusions are the two most commonly overlooked verification failures. If a contractor cannot produce proof of insurance within 24 hours, hire someone else.
You’ve got a large red oak overhanging your roof, a storm-damaged elm leaning toward the fence line, or a dead pine that needs to come down before it falls on its own terms. You call a few tree services, get quotes, and one comes in noticeably lower than the others. Before you sign anything or let a single climber set a rope in that tree, there is one step that separates a smart hire from a potentially catastrophic financial mistake: verifying that the tree service carries adequate, legitimate insurance. This is not a formality. It is the single most important piece of due diligence a property owner can perform before tree work begins.
Tree work is consistently ranked among the most dangerous occupations in the United States. Falling limbs, chainsaw injuries, equipment failures, and property damage are not hypothetical risks — they happen on residential jobs every week. When an uninsured or underinsured crew works on your property, you may be held financially responsible for injuries sustained on your land, and your homeowner’s policy may not cover the gap. I’m Michael Hartman, ISA Board Certified Master Arborist (TX-0198B), and I’ve spent decades evaluating tree crews, reviewing job sites, and advising property owners on exactly these questions. By the end of this article, you will know precisely what insurance a legitimate tree service should carry, how to verify it independently, what the documents should actually say, and what red flags indicate a contractor cutting corners on coverage.
This is not about distrust — it’s about protecting yourself, your property, and the workers on your land. A reputable tree service will hand over proof of insurance without hesitation. The ones who push back or offer vague assurances are telling you something important.
Why Tree Work Creates Unique Liability Exposure
Tree removal and pruning are not like hiring a painter or a landscaper. The physics of the work — heavy wood falling from height, equipment operating near structures, workers suspended in canopies — create liability scenarios that are genuinely severe. A 500-pound section of trunk dropped from 40 feet can destroy a roof, crush a vehicle, or kill a bystander. A climber who falls from a saddle may sustain injuries requiring hundreds of thousands of dollars in medical care. These are not edge cases; they are the reason tree work insurance premiums are among the highest in the trades.
When a contractor works on your property, your land is the job site. In many jurisdictions, property owners carry a degree of liability for injuries that occur on their premises, even when caused by a contractor’s negligence. If the tree service has no workers’ compensation coverage and an employee is injured on your property, that worker may have legal standing to pursue a claim against you directly. This is the scenario that catches homeowners completely off guard. They assumed the contractor’s problem was the contractor’s problem. The law does not always agree.
General liability insurance covers damage to your property — the fence the crew knocked over, the window broken by a falling branch, the irrigation system destroyed by a skid steer. Workers’ compensation covers the crew. Both policies are non-negotiable for any legitimate tree service operating at commercial scale. Understanding why both exist, and what each one actually covers, is the foundation of intelligent verification.
Certificate of Insurance (COI): A standardized document, typically ACORD Form 25, issued by an insurance carrier that summarizes the types, limits, and effective dates of a contractor’s active insurance policies. It is not the policy itself, but it is the standard proof-of-coverage document used across the construction and tree care industries.
The Two Policies Every Tree Service Must Carry
General liability insurance and workers’ compensation are the two foundational policies. General liability protects your property and covers third-party bodily injury claims arising from the contractor’s operations. For residential tree work, you want to see a minimum of $1 million per occurrence and $2 million aggregate, though larger jobs — particularly those involving cranes or work near structures — warrant higher limits. Some municipalities and HOAs require contractors working within their jurisdiction to carry $2 million per occurrence as a baseline.
Workers’ compensation is a separate policy entirely. It covers medical expenses and lost wages for employees injured on the job, and critically, it removes those employees’ ability to sue the property owner for workplace injuries. Every state except Texas requires workers’ compensation for businesses with employees, though the threshold for mandatory coverage varies. In Texas, where I’m based, coverage is technically optional for private employers — which means you must ask explicitly whether a Texas-based crew carries it voluntarily, because many smaller operations do not. Do not assume. Ask, and then verify.
Some tree services also carry commercial auto insurance covering their trucks and chippers, and umbrella policies that extend liability limits above the base policy thresholds. These are worth noting but are secondary to the two core policies. If a contractor mentions they have a $5 million umbrella but cannot produce a workers’ comp certificate, the umbrella is irrelevant to your primary risk exposure.
Insurance Verification Checklist Before Hiring Any Tree Service
- Request a Certificate of Insurance (ACORD Form 25) directly from the contractor before signing any agreement
- Confirm general liability limits of at least $1 million per occurrence and $2 million aggregate
- Confirm active workers’ compensation coverage listing all employees, not just the owner
- Call the insurance carrier directly using the phone number on the certificate — not a number provided by the contractor — to verify the policy is active
- Check that the policy effective and expiration dates cover the scheduled work date
- Ask to be listed as an additional insured on the general liability policy for the duration of the project
How to Read a Certificate of Insurance
Most property owners have never looked at an ACORD Form 25 before. The document is dense but follows a consistent layout. The top section identifies the insured — that should be the tree service company name, matching exactly what appears on their business license or contract. The middle section lists each policy type, the carrier name, the policy number, and the effective and expiration dates. The bottom section shows the certificate holder, which should be your name and address if you’ve requested to be listed.
Pay close attention to the policy expiration dates. A certificate showing a policy that expired three months ago is worthless, and some contractors will present outdated certificates hoping the homeowner won’t check the dates. The work date must fall within the active policy period. If a job is scheduled for November 15th and the general liability policy expires November 1st, that crew is uninsured for your job regardless of what the certificate shows for prior coverage.
The carrier name matters too. Look it up. Every legitimate insurance carrier is rated by AM Best, a financial strength rating agency for insurers. You want a carrier with at least an A- rating. Surplus lines carriers and non-admitted insurers do exist legitimately, but if you’ve never heard of the carrier and cannot find an AM Best rating, that warrants a direct call to verify the policy is real. Fraudulent certificates do exist — they are not common, but they happen, and a phone call to the carrier’s main line takes three minutes and eliminates the risk entirely.
Pro Tip: When you call the insurance carrier to verify coverage, ask specifically whether the policy has any exclusions for aerial work or tree felling operations. Some general liability policies written for landscaping companies explicitly exclude tree removal above a certain height — typically 15 feet — which means a crew doing a full removal is operating outside their covered scope even if the certificate looks valid. This exclusion is buried in the policy language, not visible on the COI, and it catches homeowners by surprise after a claim is filed.
The Owner-Only Workers’ Comp Loophole
This is the most common insurance gap I see on residential tree jobs, and it costs property owners real money when it goes wrong. A small tree service operates with the owner as the sole named insured on a workers’ compensation policy. The owner then hires day laborers, subcontractors, or seasonal workers who are not listed on the policy. Those workers are not covered. If one of them is injured on your property, the workers’ comp policy will not respond, and your exposure as the property owner increases substantially.
When you receive a workers’ compensation certificate, ask the contractor directly: does this policy cover all workers who will be on my property, including any subcontractors or day laborers? Get that answer in writing, even as a text message or email. If the contractor uses subcontractors, those subcontractors should carry their own workers’ compensation policies, and you should request certificates for each subcontractor as well. This is standard practice on commercial jobs and should be standard practice on any residential job involving a crew of more than one person.
Some states allow sole proprietors and partners to exempt themselves from workers’ compensation requirements. An owner-operator who works alone may legitimately have no workers’ comp because there are no employees. That is legally acceptable in many jurisdictions. But the moment that owner brings a helper — paid or otherwise — the coverage question reopens. A helper injured while assisting with your tree job is not a gray area. They are a worker, and the absence of coverage has consequences.
Common Mistakes to Avoid When Verifying Tree Service Insurance
- Accepting a verbal assurance: Contractors who say “don’t worry, we’re fully insured” without producing documentation are not providing verifiable coverage. Always require the actual certificate before work begins, not after.
- Not checking policy dates: Expired certificates are presented regularly, sometimes accidentally and sometimes deliberately. The work date must fall within the active coverage window on every policy listed.
- Skipping the carrier verification call: Certificates can be forged or altered. A three-minute call to the carrier’s published main line — not a number the contractor gives you — confirms the policy is real and active.
- Ignoring subcontractor coverage: Assuming the primary contractor’s policy covers all workers on site is a dangerous assumption. Ask explicitly about subcontractors and request their certificates separately.
Licensing, Credentials, and How They Relate to Insurance
Insurance and licensing are separate but related indicators of a legitimate operation. Many states require tree services to hold a contractor’s license, pesticide applicator license, or both, depending on the scope of work. ISA certification — particularly the ISA Certified Arborist credential — is a voluntary professional credential that demonstrates technical competency, but it does not replace insurance and is not a substitute for it. A crew can be ISA certified and uninsured. A crew can be fully insured and have no ISA credentials. Both matter, and they measure different things.
That said, ISA-certified arborists and companies that employ them tend to operate more professionally across the board, including in their insurance practices. The ISA’s Tree Care Industry Association (TCIA) offers an Accredited Tree Care Company program that requires member companies to maintain specific insurance minimums as a condition of accreditation. If a company displays TCIA Accreditation, their insurance has been independently verified as part of that process — though you should still request a current certificate, since accreditation reviews happen periodically, not continuously.
State licensing boards often maintain online databases where you can verify a contractor’s license status. Cross-referencing a contractor’s license number against the state database takes less than five minutes and confirms they are operating legally. An unlicensed contractor doing work that requires a license is a signal that they may be cutting corners in other areas, including insurance.
What to Do If a Contractor Cannot Provide Proof of Insurance
Walk away. This is not a negotiating position — it is the correct response. A legitimate tree service carries insurance as a cost of doing business, and producing a certificate of insurance is a routine administrative task that takes minutes. Any contractor who cannot produce documentation within 24 hours of your request either does not have coverage or is disorganized to a degree that should concern you regardless of the insurance question.
The lower quote from an uninsured contractor is not a savings — it is a transfer of risk from the contractor to you. If something goes wrong, you absorb the financial consequences. The difference between a $1,200 quote and a $1,800 quote disappears entirely if an uninsured worker is injured on your property and you face a personal injury claim. The math is not close.
If you are in a situation where work is urgent — a storm-damaged tree posing immediate hazard — contact your homeowner’s insurance carrier first. Many policies cover emergency tree hazard mitigation, and your carrier can recommend or approve contractors who meet their insurance requirements. This is a faster path to verified coverage than vetting unknown contractors under time pressure.
Your Action Path Before the First Cut
Verifying tree service insurance is a straightforward process that takes less than an hour and protects you from financial exposure that could run into six figures. Request the certificate of insurance before signing any contract. Read the dates, read the limits, and identify the carrier. Call the carrier directly to confirm the policy is active and ask about any exclusions relevant to tree work. Ask explicitly about workers’ compensation coverage for all workers, including subcontractors. Request to be named as an additional insured on the general liability policy. Cross-reference the contractor’s license with your state licensing board. If any of these steps produce resistance or vague answers, that is your answer.
The tree services that do this work professionally — the ones with trained climbers, proper equipment, and sound practices — carry full insurance without exception. They expect you to ask. They will hand over documentation without hesitation because they have nothing to hide and everything to gain from a client who takes the process seriously. That expectation of professionalism, on both sides of the transaction, is what separates a good job from a liability nightmare.
