There is a line on your auto policy that most professionals have never looked at, and it is the line that decides what happens to your household if someone else ends your career on the way to work.

It is not your liability coverage. You have probably attended to that one. Liability is the coverage your broker talks about, the one tied to your net worth, the one the umbrella sits on top of. It exists to protect your assets from a claim brought against you.

The line that matters more, and gets a fraction of the attention, is uninsured and underinsured motorist coverage. UM/UIM. It is the only coverage on the policy that responds when somebody else causes the crash and cannot pay for the damage they did.

Put another way: every other coverage on the policy is bought for somebody else's benefit. Liability protects the person you hit. UM/UIM is the only line you buy for yourself, and because it is, it is the only one where raising the number raises what you can personally recover. Most professionals have spent years optimizing the coverage that pays strangers and have never once looked at the coverage that pays them.

Why This Hits Professionals Harder

The economics of an injury case are mostly the economics of lost earning capacity. Medical bills are large but bounded. Earning capacity is neither.

If you earn $90,000 and lose a year, the claim carries $90,000 of wage loss. If you earn $450,000 and lose a year, it carries $450,000. If the injury is permanent and takes ten points off what you can do for the next twenty years, the number stops being a wage loss and becomes a present-value calculation that runs into seven figures.

Then there is the version of this that does not show up as a total disability at all. A radiologist with a cervical fusion who can no longer sit for an eight-hour read. A litigator with a mild traumatic brain injury who still passes every neuropsych screen but cannot hold a cross-examination outline in working memory anymore. A surgeon with a fine-motor deficit in the non-dominant hand. None of those people are unemployable. All of them just lost the top of their earning curve, permanently, and that loss is the entire case.

The higher your earning capacity, the more of your total exposure sits in a category that no health plan touches and no state minimum policy comes close to covering.

The Ceiling Is Set by a Stranger

Here is the structural problem. Absent UIM, the most you can recover is whatever the person who hit you happened to buy.

In California, that number is frequently $30,000. That has been the per-person minimum since January 1, 2025, raised from $15,000, where it had sat since 1967. Plenty of drivers carry exactly the minimum. The Insurance Research Council put California's uninsured rate at 20.4% in 2023, which means one in five carry nothing at all, against a national figure of 15.4%.

So the realistic distribution of outcomes if a stranger disables you on the 101 looks roughly like this: a meaningful chance they have nothing, a large chance they have $30,000, and a modest chance they have enough to matter. You do not get to influence which one you draw.

People sometimes answer this with "then I sue them personally." You can, and occasionally it is worth doing to preserve the claim. But a driver who could not afford a $30,000 policy cannot satisfy a $2 million judgment, and collection efforts against a judgment-proof defendant consume years and produce very little. A judgment is a piece of paper. UIM is money.

What Your Other Coverages Do Not Do

Professionals tend to assume they are already covered through some combination of health insurance, disability, and the umbrella. Each of those has a specific hole.

• Health insurance pays the providers and then comes back for its money. Through subrogation or a plan lien, your carrier asserts a claim against whatever you recover. It is closer to a loan against your case than a benefit, and on a self-funded ERISA plan the reimbursement right can be close to absolute.
• Disability insurance replaces a defined percentage of income, subject to an elimination period, a benefit cap, an own-occupation definition that may or may not be as generous as you remember, and offsets against other sources. It pays nothing for pain and suffering, nothing for permanent impairment as such, and nothing to your spouse.
• Your umbrella is a liability instrument. It responds when you are the defendant. In California it does not automatically extend uninsured or underinsured motorist coverage to you as a claimant. That has to be added by endorsement, and not every carrier offers it here.

That last bullet is the one we see most often and the one that costs the most. A household with a carefully constructed $3 million umbrella, sitting on $100,000 of UIM, has built a very expensive structure that only functions if they are the one who caused the harm.

The Coverage Follows the Person

One genuinely good feature, and an underappreciated one: UM/UIM is not tied to the car.

Under a standard California policy it covers you and your resident relatives as pedestrians, as cyclists, as passengers in someone else's vehicle, and in most cases in a rideshare. Your teenager walking home from school. Your spouse on a weekend ride up Mulholland. You stepping off a curb in Westwood.

Every one of those scenarios involves a person you care about being injured by a stranger whose insurance you do not control. This is the coverage that answers all of them, purchased once, on the auto policy.

What We Would Actually Tell You to Do

Not a case evaluation. Three things, this week, none of which involve hiring anyone.

One. Open your declarations page and find the line reading uninsured motorist bodily injury. Not your insurance card, which tells you nothing. The declarations page, which lists every limit.

Two. Compare that number to your liability limit. If UIM is lower, ask your broker to match it. In California, carriers must offer UM limits equal to your bodily injury liability limits, and as a practical matter they will not sell you more than that, so your liability line is the cap on your UIM line.

Three. Ask, in these words: "Does my umbrella have a UM/UIM endorsement, and if not, can you add one and what does it cost?" If the answer is a pause, you have found the gap.

We have no financial interest in any of this. Nobody pays us a referral fee on an insurance policy. We push it because the single most consequential moment in a serious injury file is the moment we pull the declarations page, and by then the number is fixed and there is nothing anyone can do about it.

When It Does Become a Legal Problem

A UIM claim is a first-party claim, which means your own insurer evaluates it, and it is entitled to raise every defense the at-fault driver could have raised. Comparative fault, causation, the reasonableness of your treatment, whether the degenerative changes on your MRI predated the crash. When these claims do not settle, most policies send them to binding arbitration rather than to a jury.

For a professional, that is a hard forum. Proving the loss of the top of an earning curve takes an economist, a vocational expert, and usually a treating physician willing to put a number on a restriction. It takes production records, partnership distributions, prior-year returns, and a coherent account of what you could have earned. Volume practices do not build that file, because it does not scale. That is the work, and it is most of why these cases are worth doing carefully or not at all.

If you have not been hurt and you are just here to fix the policy, good. Start with the method for picking a UIM number and go no further. If you have been hurt and your income is a significant part of what you lost, talk to someone before you give a recorded statement to anyone, including your own carrier.