A few years back I was working a small animal clinic in South Carolina, the kind of practice an ETA buyer gets excited about on paper: Good revenue, reasonable margins, and an owner who'd spent two decades as a fixture in a small, close-knit community. Then I asked for the payroll reports.
The seller told me he didn't have any. What he had was a Mead composition book, hours logged in pencil, going back years. That happens more often than you'd think in the lower middle market, so I sat down and started working through it.
Every employee had worked exactly 40 hours a week. Not 38, not 43 ... But forty on the nose, for every person, every single week, going back as far as the book did.
Here's what I already knew walking in: The clinic was badly understaffed. We knew it for a fact, seriously enough that it was showing up in ways that had nothing to do with the financials. So a chronically understaffed practice where every person clocks a clean 40 every week, without fail? That doesn't happen. People stay late, people cover shifts, and in an understaffed shop they cover a lot of them.
The composition book wasn't a record of hours worked. It was a record of hours the owner was willing to pay for.
Labor compliance failures understate the true cost of running the business, in the reported financials themselves, before any addback discussion begins. That creates a historical liability the buyer can inherit and a permanent cost increase the moment the practice is corrected. Neither number appears in the seller's adjusted EBITDA.
Weak payroll records are the first red flag
Before the wage math, look at what the composition book itself is telling you. The quality of a seller's records is a signal, and not only about labor. A business that can't produce a payroll register, that reconstructs hours from memory, that runs no timekeeping system for its non-exempt staff, is usually a business where a lot of other numbers are soft too. If the hours are guesses, what about the inventory counts? The revenue cutoffs? The expense classifications? Bad labor records rarely travel alone.
The composition book has cousins, and once you've seen a few data rooms you start recognizing the family:
- Hours that are always round numbers, or always identical, across every employee and every pay period
- "Everyone here is salaried," in a business full of roles that are plainly hourly work
- Cash payments on the side, sometimes described casually as how weekend shifts or overflow work gets handled
- A headcount on the org chart that doesn't tie to the W-2 and 1099 counts on the tax filings
- No payroll provider, no timekeeping software, no personnel files ... just the owner's memory
None of these is proof of a violation on its own. Each one is a reason to slow down and test, because every item on that list makes the reported labor cost less reliable. So the composition book does two jobs in your diligence at once: It creates a specific, sizable liability, which we'll get to. And it tells you to trust nothing else in the data room until you've verified it yourself.
Why labor compliance belongs in financial due diligence
Most buyers fight over addbacks. Is that legal fee one-time? Is owner comp normalized right? Fair questions, and worth asking. But an addback fight assumes the reported payroll number is real and only argues about what to layer on top. Our story's composition book breaks that assumption at the root. The hours weren't recorded, so the overtime was never paid, so the labor cost on that P&L was understated before anyone got near the adjustments.
That matters because your purchase price rides on adjusted EBITDA, and adjusted EBITDA is built off the reported labor line. You can win every addback argument on the deal and still be underwriting a payroll figure that doesn't reflect what the business actually owes its people. Reported labor cost is not go-forward labor cost. On a non-compliant deal, it isn't even accurate historical cost.
How unpaid overtime becomes a buyer's liability
Federal law requires time-and-a-half past 40 hours in a week for non-exempt employees, and calling someone "salaried" doesn't make them exempt. Exempt status turns on what the person actually does and how they're paid, measured against a salary floor that currently sits at $684 a week federally and runs higher in several states. A practice manager paid $700 a week on salary might clear that bar. A vet tech paid the same to do tech work probably doesn't, no matter what the offer letter says. If the non-exempt staff in that book worked the hours everyone knew they worked, every one of those weeks carries unpaid overtime.
Now price it, because it comes at you from two directions.
Behind you is the historical liability. Unpaid overtime is recoverable going back two years, or three if the violation was willful, and in private litigation the employee collects the back wages plus an equal amount in liquidated damages, plus attorney's fees. That's double the unpaid wages, across two or three years, for every affected employee. Small per-person errors scale fast. Six techs owed even $4,000 a year each in missed overtime is $24,000 a year, roughly $48,000 across two years, doubled to nearly $100,000 before a plaintiff's lawyer bills an hour.
Ahead of you is the run-rate. Once you fix the practice and start paying the overtime that was always owed, your go-forward labor steps up permanently. That increase never appeared in the seller's numbers, because the seller wasn't paying it.
An out-of-compliance pay practice isn't one number, it's two. There's the tail (back wages, liquidated damages, penalties for time already worked), and there's the run-rate (what it costs to staff the business correctly from here). A seller who's been running lean on unpaid overtime has both buried in the financials, and neither one showed up in the adjusted EBITDA the broker sent you.
Contractor misclassification: Same problem, different costume
The 1099 associate who works set hours, uses the practice's equipment, sees the practice's clients, and answers to the owner may not be a contractor at all. Reclassify them and you pick up the employer share of payroll taxes, back overtime, and penalties behind you, and a higher loaded cost ahead of you. Same shape as the overtime problem: A historical tail and a permanent step-up, neither one visible in the reported number.
One structural note worth holding: Don't assume an asset deal walls this off. Depending on the state and the type of claim, wage-and-hour and employment liabilities can follow the business to a buyer even in an asset purchase. That's a question for your counsel, not your QoE analyst, but it changes how much the exposure should move you.
Let me be clear about the lane I'm in: I'm describing diligence risk, not rendering a legal opinion. A QoE flags these issues, reconstructs the hours where the records allow, and sizes the exposure directionally. Employment counsel renders the legal conclusion and the number that lands in the reps. The analyst's job is to make sure you're asking the question before you sign, not after.
The payroll documents to request before you close
You don't need a subpoena to test most of this. You need the right request list, sent early, and attention to what comes back (and what doesn't):
- Payroll registers for the trailing three years, by employee and pay period, from the payroll provider if one exists
- Timekeeping system exports, or whatever passes for one (schedules, shift logs, the composition book itself, etc.)
- Quarterly federal payroll tax filings (Forms 941) and annual W-2 and 1099 counts, to reconcile against the org chart and the P&L
- A roster of who is treated as exempt vs. non-exempt, and who is on 1099, with job descriptions for anyone salaried or contracted
- Any prior wage claims, DOL inquiries, or settlements
Pay particular attention to the 941 reconciliation. Payroll tax filings are the one labor record a seller can't casually rewrite after the fact. If the wages on the 941s don't tie to the payroll expense on the P&L, or the W-2 count doesn't match the people you met on the site visit, you've found a thread worth pulling. And if the seller can't produce the 941s at all, that tells you something too.
What a QoE should do about labor compliance risk
If the labor records are thin, the work can't stop at "does payroll tie to the tax returns." It should:
- Reconstruct the hours. Pull whatever exists, schedules, appointment logs, door-access data, the composition book, and rebuild what non-exempt staff actually worked against what they were paid.
- Reconcile payroll across sources. P&L payroll expense to payroll registers to Forms 941 to W-2/1099 counts. Gaps between those four numbers are findings, not rounding.
- Test the classifications. Are the "salaried" people exempt on the duties test, or just called salaried? Are the 1099s actually contractors? Flag it, size it, and route the legal call to counsel.
- Size the wage-and-hour tail. Estimate the back-overtime exposure across the lookback, with the doubling, so it can go into the price, the escrow, or the reps.
- Read the records as a signal. Treat weak labor documentation as a reason to test the rest of the data room harder, not as an isolated labor issue.
Frequently asked questions
Does a Quality of Earnings report cover labor compliance?
A QoE is a financial analysis, not a legal audit, but labor compliance sits squarely inside its job when the records are weak. The analyst reconstructs hours, reconciles payroll across the P&L, payroll registers, and tax filings, tests whether reported labor cost reflects reality, and sizes the exposure directionally. The legal conclusion about whether a violation occurred belongs to employment counsel.
How far back can unpaid overtime be recovered?
Under federal law, two years, or three years if the violation was willful. In private litigation the employee can recover the unpaid wages plus an equal amount in liquidated damages, plus attorney's fees, which effectively doubles the exposure. State law can extend or add to this.
Can a buyer be held responsible for the seller's wage violations after closing?
Sometimes, yes. Depending on the state and the type of claim, wage-and-hour liabilities can follow the business even in an asset purchase. Buyers typically manage this through indemnification, escrow, and specific reps in the purchase agreement, which is exactly why the exposure needs to be sized before signing, not discovered after.
What's the fastest way to test a seller's payroll records?
Reconcile four numbers: Payroll expense on the P&L, the payroll register totals, the wages reported on Forms 941, and the W-2/1099 counts against actual headcount. If those four agree, the labor line is probably reliable. If they don't, you've found where to dig.
The bottom line
A composition book where everyone worked exactly 40 hours isn't a quirky filing habit. It's a liability behind you, a cost increase ahead of you, and a warning about every other number the seller handed you. None of it shows up in the addback column, which is exactly why buyers who only fight over addbacks walk right past it.
When the records are too clean to be true, that's the tell. Read the payroll line like it's the most important page in the data room, because on a lot of lower middle market deals, it is.
The other half of labor risk isn't about compliance at all. It's what happens when your best producers are perfectly, legally underpaid, and the whole margin depends on it. That's Part 2, coming soon.
QoEPro performs independent Quality of Earnings reviews for buyers and sellers in the lower middle market, from independent sponsors and search fund entrepreneurs to owners preparing for a sale. Our job isn't only to verify the numbers. It's to help buyers understand whether the business they're acquiring performs the way it's been presented. View report options →