When hiring a contractor, one of the smartest steps is to ask for proof of insurance. In most cases, this proof comes in the form of a Certificate of Insurance (COI)—a document that confirms active insurance policies cover the contractor. This isn’t just a box to check for state requirements or industry standards—it’s your safety net. Without it, you could be left footing the bill for costly damages, medical expenses, or legal disputes if something goes wrong on the job. In this guide, we’ll break down why proof of insurance matters, what to look for, and how to protect yourself by making it a non‑negotiable part of every contractor agreement.
In our Certificate of Insurance 101 blog series, we’ve been exploring topics related to proof of insurance in various industries. Read on to learn about the necessity and logistics of obtaining proof of liability insurance for contractors.
When hiring contractors, it is best practice to work with those who already have insurance or are planning to attain protection for your project. Here are a few of the reasons why:
Ultimately, working with insured contractors is a risk maintenance best practice that provides you with a safety net against potential liabilities and unforeseen events. It protects your property, finances, and well-being, allowing you peace of mind throughout the construction process. Consider hiring contractors with general liability insurance, workers’ compensation insurance, or other related policies.
Not all insurance is created equal. Depending on the scope of work and level of risk, a contractor may need one—or several—types of coverage. Here are the most common policies you should confirm when requesting proof of insurance:
General Liability Insurance – Covers third‑party property damage and bodily injury. This is the baseline protection every contractor should carry.
Workers’ Compensation Insurance – Pays for medical care and lost wages if a worker is injured on the job. In many states, it’s required by law.
Commercial Auto Insurance – Protects against damages or injuries caused by vehicles used for business purposes, such as trucks or vans on a job site.
Professional Liability / Errors & Omissions (E&O) Insurance – Covers mistakes, oversights, or negligence in the contractor’s work that cause you financial harm.
Builder’s Risk Insurance – Protects structures under construction, as well as materials, fixtures, and equipment used on the project.
By understanding the different types of insurance, you can better assess whether a contractor’s coverage is adequate for your project—and avoid unpleasant surprises if something goes wrong.

Unfortunately, many of us have been in a situation where a subcontractor, vendor, or other hired third-party service provider does not have proper insurance coverage. Not only does it endanger them, the contractor, but it endangers you, a business owner/their business partner, and leaves you on the hook for potential risk and financial ramifications. When it comes down to it, if a contractor lacks insurance, you may be held responsible for any legal fees, injuries, property damage, or other insurance claims that happen on your property during a construction project.
A customer can—and should—ask for proof of insurance from all hired third parties that expose their business to risk. You, as the business partner hiring a contractor or third-party service provider, are likely to be held liable for any damages your hired parties cause if you don’t ensure that they have proper protections in place.

It is not rude at all to ask a contractor for proof of their insurance! In fact, it’s your due diligence as someone working with a third-party service provider to ensure their proper coverage. In some industries, it’s even a regulatory requirement to do so. Most general contractors will know that this is just part of the job and will anticipate your request for evidence of insurance and respond to it quickly. In some cases, you will likely have to speaker with their insurance provider to obtain a COI (certificate of insurance).
When hiring a contractor, you should make sure that they have an active, relevant insurance policy that covers them up to the levels of risk you believe they are taking on in your job. The specific documents you should ask for when it pertains to proof of coverage are called business certificates of insurance, also known as simply insurance certificates or COIs. These are free documents issued by a contractor’s insurance provider that act as a snapshot of their coverage.
To ask a contractor if they’re insured, don’t rely on a verbal “Are you carrying the proper insurance for this job?” or anything of the sort. The insurance verification process is a serious practice that involves an official COI request. To make a COI request for a contractor, do the following:
Once you send off this request to them, they’ll work with their insurer to generate the document and issue it to you as soon as possible. Once you get the COI it should include their coverage type and limits, as well as the policy coverage dates. Then, the verification process begins…

Whether this is your first or hundred and first time visiting myCOI’s website, here’s what you need to know:
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