Michigan No-Fault pays your medical bills and wage loss no matter who caused the crash — but in exchange, it limits when you can sue the at-fault driver for pain and suffering. In serious truck accident cases, you usually can sue, because truck crashes tend to cause exactly the kind of injuries the law requires. Here’s the threshold, how courts apply it, and why it matters so much to the value of your case.
The serious impairment threshold
To bring a third-party claim for non-economic damages — pain, suffering, disability, loss of enjoyment of life — against the at-fault trucking company, Michigan law requires that your injury meet one of these:
- Serious impairment of an important body function that affects your general ability to lead your normal life;
- Permanent serious disfigurement; or
- Death.
This threshold is the gate between a pure PIP benefits claim and a full liability claim against the trucking company.
What “serious impairment of body function” actually means
This is the category most truck cases turn on, and Michigan courts look at several practical factors to decide whether it’s met. In general, they consider whether there is an objectively manifested impairment (one observable in medical records and testing, not just self-reported), whether it involves an important body function, and whether it affects the person’s general ability to live their normal life. Importantly, the impairment does not have to be permanent, and it doesn’t have to affect your entire life — only your general ability to live it. Courts compare your life before and after the crash, considering the type and extent of the injury, the treatment required, and the effect on your daily activities.
Permanent serious disfigurement
Serious, permanent scarring or disfigurement — the kind that results from severe truck crashes, burns, or surgeries — can independently satisfy the threshold, even where the functional impairment might be debated.
Death and wrongful death
When a truck crash is fatal, the deceased’s family can pursue a wrongful-death claim against the at-fault trucking company. These cases clear the threshold by definition and involve their own rules about who may recover and for what.
Why truck injuries so often qualify
Because a fully loaded commercial truck can weigh 20 to 30 times more than a passenger car, truck crashes routinely cause the serious, life-altering injuries that clear this threshold — fractures requiring surgery, spinal injuries, traumatic brain injuries, amputations, and permanent scarring. Where a minor car-crash injury might not meet the bar, a serious truck injury frequently does, which is what opens the door to the larger claim.
What you can recover once you meet the threshold
Clearing the threshold lets you pursue the at-fault trucking company for pain and suffering and for economic losses that exceed your PIP coverage — future wage loss, future medical costs above your limits, and more. This is where truck settlements are built. See our truck accident settlements guide and our overview of Michigan’s no-fault system.
How insurers fight the threshold
Because the threshold controls whether the big claim exists at all, defense insurers attack it aggressively. They argue your impairment isn’t “objectively manifested,” that it doesn’t affect an important body function, that you’ve returned to your normal life, or that a pre-existing condition is really to blame. Countering these arguments takes strong, consistent medical documentation and, often, expert testimony — which is why what you do medically after the crash matters so much.
The role of medical evidence
Meeting the threshold is proven through the medical record: imaging and objective findings, consistent treatment, physician opinions on causation and permanency, and documentation of how your injuries limit your daily activities. Gaps in treatment or downplaying your symptoms can undercut an otherwise strong case — so follow your treatment plan and be candid with your providers.
Comparative fault still applies
Even after you clear the threshold, Michigan reduces your recovery by your percentage of fault, and being more than 50% at fault bars non-economic damages. So proving both the threshold and the trucking company’s fault is essential.
Frequently asked questions
Does my injury have to be permanent to sue? No — a serious impairment doesn’t have to be permanent, though permanency strengthens a claim.
Who decides if I meet the threshold? It can be decided by a judge or, where facts are disputed, by a jury — which is why evidence is critical.
I went back to work — did I lose my claim? Not necessarily. Returning to work is one factor, not an automatic bar.
Talk to a Michigan truck accident lawyer
Whether your injury meets the threshold is a legal question worth getting right — and it’s often the difference between a small claim and a full recovery. The call is free and you pay nothing unless we win. Call 1-800-TRUCK-CRASH or request a free case review.
General information about Michigan law, not legal advice. The threshold is applied case by case; consult a licensed Michigan attorney.