A sub tells you they’re covered. You get a certificate of insurance. Everyone moves on with the job. Then someone gets hurt, and you find out the certificate was outdated, the policy had lapsed, or worse — it was never real coverage at all. Under Missouri law, that mistake can land squarely on you, even if you did nothing wrong on the job site itself.
Missouri’s Construction Rule: One Employee Is All It Takes
Most Missouri businesses aren’t required to carry workers’ compensation until they have five employees. Construction is different. Under RSMo § 287.030, any employer who erects, demolishes, alters, or repairs improvements must carry workers’ comp with just one employee — full-time, part-time, or a single owner-operator with no crew at all. If a subcontractor tells you they’re “exempt” because they’re small, that claim often doesn’t hold up, and it’s worth verifying rather than taking their word for it.
Why an Uncovered Sub Becomes Your Problem
Even when a subcontractor genuinely has no employees and is legally exempt from carrying their own coverage, Missouri’s statutory employer doctrine (RSMo § 287.040) can still put you on the hook if that sub gets hurt on your job. The law is designed to make sure an injured worker has somewhere to turn for medical care and wage replacement — and if the sub doesn’t have a policy, that somewhere can be your policy. Depending on how your coverage and payroll are structured, an uninsured sub’s injury can turn into a claim against your policy, and their uninsured payroll can also get added to your premium at audit time, sometimes months after the job is long finished and paid for.
The Ghost Policy Trap
Not every certificate you’re handed represents real coverage. A “ghost policy” is a workers’ comp policy written with no actual employees on it — often just to generate a certificate to satisfy a GC or property owner — while any workers who actually show up on your job aren’t covered by it at all. It looks legitimate on paper. It isn’t. If that sub’s uninsured worker gets hurt, the ghost policy doesn’t respond, and you’re right back to being exposed through the statutory employer doctrine. Ghost policies are a known workaround in the trades precisely because they’re cheap and they satisfy a paperwork requirement without providing real protection — which makes them worth watching for, not relying on.
Why a Certificate Alone Isn’t Proof of Coverage
A certificate of insurance is a snapshot, not a guarantee. Policies lapse for non-payment. Coverage gets cancelled mid-job. A certificate can be handed to you today and be worthless by the time work actually starts, especially if there’s any delay between bidding a job and breaking ground. That’s why the certificate you accept needs to meet a few specific standards:
- It needs to be currently dated. A certificate issued weeks or months before the job starts tells you nothing about whether the policy is still active today. Ask for one dated at or near your actual start date, not the one they had on file from an earlier job.
- It needs to name you as the certificate holder. A generic certificate with someone else’s name on it, or no holder listed at all, doesn’t establish that you have any standing to be notified if that policy changes or cancels.
- It needs to come directly from the subcontractor’s own insurance agent — not from the subcontractor. A certificate emailed to you straight from an agent’s office, or generated through the carrier’s or agent’s certificate system, is far harder to alter than a PDF the sub sends you themselves. If you have any doubt, call the agent listed on the certificate and confirm the policy is active before the crew shows up.
Make Verification Part of Your Process, Not an Afterthought
The safest approach is to require a current, correctly addressed certificate before a subcontractor sets foot on your job — not after, and not “we’ll get it this week.” Build it into your standard subcontractor agreement, and don’t waive it for subs you’ve used before; a policy that was active last year tells you nothing about whether it’s active now. If a sub pushes back or can’t produce a real certificate quickly, that’s information worth having before the job starts, not after someone’s hurt.
If you’re not sure whether your current subcontractor agreements and certificate process actually protect you, it’s worth a conversation with your agent before your next job starts, not after a claim.
Kirk Reisner
kirk@insurancenerd.net | 417-218-0762