How to Document Lost Income After an Injury

What actually counts as lost income and the paperwork that proves it to an insurance company.

When an injury keeps you out of work, the bills don't stop just because your paycheck did. Rent, groceries, and medical copays keep coming, and that gap between what you owe and what you're earning is exactly what a lost income claim is supposed to cover. But insurance companies don't take your word for it — they want documents.

The problem is most people don't think to save the right paperwork while they're recovering. They're focused on healing, not building a file. This post walks through what actually counts as lost income, what proof insurers expect to see, and how to keep the gaps in your paycheck from becoming gaps in your claim.

What counts as lost income

Lost income isn't just your base salary for days you missed. It can include overtime you would have worked, shift differentials, tips, commissions, and bonuses tied to performance or attendance. If your injury forced you to turn down a promotion, extra shifts, or a contract you'd already lined up, that lost opportunity may count too, though it's harder to prove and usually needs more documentation.

It also covers paid leave you were forced to use. If you burned through sick days or vacation time to avoid losing wages outright, you still lost something of value — that time off is gone, and you can't get it back to use for an actual vacation or when you're sick again later. Many people don't realize this is compensable, so they never mention it.

The paper trail for traditional employees

If you're a W-2 employee, your documentation is usually straightforward. Pay stubs from before and after the injury show your normal earnings pattern and the drop-off. A letter from your employer's HR department, on letterhead, stating your job title, pay rate, hours missed, and any paid leave used carries real weight with adjusters because it's coming from a third party, not you.

Your own timesheets or attendance records help too, especially if your hours vary week to week. If you're hourly and your schedule fluctuates, an average based on several months before the injury gives a more accurate picture than just one or two paychecks. Ask HR early — payroll departments sometimes take weeks to pull historical records, and you don't want that holding up your claim later.

If you're self-employed, a contractor, or paid in cash

This is where lost income claims get harder, and where insurers push back the most. Without a W-2 or an employer to write a letter, you have to build your own proof. Tax returns from the past couple of years are the starting point — they establish what you typically earn in a normal period.

Beyond taxes, keep anything that shows work you had scheduled and had to cancel or turn down: invoices, contracts, client emails, appointment calendars, or booking records. If you run a small business, profit-and-loss statements and bank deposit records can help show the dip during your recovery. The more independent documents you can stack up, the less the claim depends on your word alone.

When a doctor's note becomes essential

Insurance companies almost always want medical documentation tying your time off to your injury, not just your say-so that you couldn't work. A note from your treating doctor specifying when you were unable to work, and any restrictions once you returned, connects the medical record to the wage loss claim directly.

This matters even after you go back. If you returned to modified duty, fewer hours, or a lower-paying role because of physical restrictions, that ongoing gap is still a form of lost income. Make sure your doctor's notes reflect any restrictions in writing, not just verbal instructions, so there's a paper trail matching your actual work changes.

Lost earning capacity vs. lost wages

Lost wages cover income you already missed. Lost earning capacity is different — it deals with what you're likely to lose going forward if your injury permanently limits the kind of work you can do. This usually comes up in more serious injuries and often requires input from a vocational expert or economist, not just pay stubs.

You don't need to sort out which category applies to your situation. Just keep collecting the documentation described above and let your lawyer or the claims process sort out whether the injury is temporary or has longer-term effects on your ability to earn.

Mistakes that shrink or delay this part of a claim

The most common mistake is waiting too long to gather records. Payroll turnover, closed businesses, or a manager who's since left the company can all make it harder to get an employer letter six months down the road. Ask for documentation while it's easy to get, even if you're not ready to file a claim yet.

Another mistake is only reporting your base pay and forgetting about overtime, tips, or bonuses you would have earned. Adjusters aren't going to volunteer to add those in — you have to show the pattern with records, not just tell them it existed.

This article is general information for the public, not legal advice, and reading it does not create an attorney-client relationship. Nothing here predicts an outcome or the value of any claim. Laws and filing deadlines differ by state and change over time — talk with a lawyer about your own situation. Attorney advertising.