What Kinds of Insurance Do Contractors Carry?
Short answer
Most contractors carry some combination of general liability, workers' compensation, commercial auto, and coverage for their own tools and equipment. Trade and contract terms add the rest: professional liability where design judgment is involved, pollution liability where soil, air, or existing building materials are disturbed, builder's risk during construction, and cyber liability where the business holds client data. A surety bond is frequently required alongside these, but it is a guarantee, not insurance.
The liability lines
Commercial general liability responds to third-party bodily injury and property damage arising out of the contractor's operations. Third party is the operative word: the person hurt or the property damaged belongs to someone other than the contractor. It is the line most often named in a contract clause and the one most often assumed to cover more than it does. Defective workmanship on the contractor's own scope is generally handled as a contractual and warranty matter rather than a liability claim.
Professional liability, also called errors and omissions, sits next to it and covers claims arising from professional judgment — design, specification, engineering, consulting. Contractors who only build to someone else's drawings often do not need it. Design-build contractors usually meet the requirement in their contracts.
Contractors pollution liability exists because general liability forms commonly restrict pollution-related claims. Excavation, demolition, utility work, and renovation of older structures all raise the question.
The injury line: workers' compensation
Workers' compensation is administered state by state and covers employees' work-related injury and illness. It is a statutory system rather than a negotiated contract, which is why it behaves differently from the other lines: the benefits, the dispute process, and the rules for who is covered come from state law. Most states require employers to carry it. The treatment of owners, corporate officers, partners, and sole proprietors — included by default, excludable by filing, or outside the system entirely — differs by state, and that difference is the source of most confusion on this topic. See what paperwork an independent contractor is asked for for how the request usually arrives.
The property and equipment lines
A standard office or building property policy covers property at a described location. A contractor's property mostly is not there. Inland marine coverage — tools and equipment floaters, installation floaters — handles movable property in transit and at job sites. Builder's risk covers physical damage to the structure under construction itself, for the length of the project.
Commercial auto covers vehicles used in the business. The question underwriters ask is how the vehicle is used, not whose name is on the title.
The cyber line
Cyber liability responds to the costs and third-party claims that follow a data compromise, account takeover, or business email compromise affecting the business. Contractors encounter it when a project owner in a regulated industry adds it to a contract, or when the business itself holds client payment details and personal data.
The risk this line refers to is documented publicly. The FBI's Internet Crime Complaint Center takes public reports of internet crime and publishes annual reports and alerts describing current scam types, including schemes that target invoicing and payment redirection. CISA's Secure Our World materials describe the four habits federal cybersecurity guidance centers on — recognizing phishing, strong passwords, multifactor authentication, and keeping software updated. The National Cybersecurity Alliance publishes free glossaries and toolkits that define the terms an insurance application will use.
Bonds are not insurance
A surety bond is a three-party guarantee: the surety assures the party requiring the bond that the contractor will perform an obligation. If the surety pays, it generally looks to the contractor for repayment. Insurance transfers risk; a bond guarantees performance. Contract language often lists both in one sentence, which is why they get conflated.
Where to look next
The references below are cited for the cyber section only; they do not describe insurance forms or rates. For the wording of any specific coverage, the policy itself governs, and the authorities are the issuing carrier, a licensed agent or broker, and your state insurance department.