If you've never been through a Department of Labor audit, it's easy to assume it's something that only happens to large corporations with sprawling HR departments. It isn't. Small businesses — especially in food service, healthcare, hospitality, construction, and retail — are audited every year, and most owners are caught off guard not because the rules are obscure, but because a handful of common, avoidable mistakes quietly build up until they trigger a Wage and Hour Division (WHD) investigation.

In FY2025 alone, the DOL recovered $259 million in back wages for roughly 177,000 workers — the highest total since 2019. That number isn't driven by a small group of bad actors. It's driven by ordinary businesses making the same mistakes, over and over.

This checklist covers what actually triggers a DOL audit, the five mistakes most likely to land you under one, and what to do about each before it becomes a problem.

The Wage and Hour Division doesn't audit businesses at random. Investigations are almost always set in motion by one of a small number of predictable triggers:

1. Employee complaints. This is the single most common trigger. Any current or former employee can file a complaint with the WHD, and they can do it anonymously. You may never know who filed it, or exactly when — the first sign of an audit is often a letter or a phone call from an investigator.

2. Worker misclassification. Labeling workers as 1099 contractors when they function like employees, or classifying hourly staff as "exempt" without meeting the actual duties test, is one of the fastest ways to draw scrutiny.

3. Inconsistent payroll records. Sudden drops in reported wages, irregular overtime patterns, or gaps in timekeeping data are red flags — both for internal fraud and for wage theft. Investigators are trained to notice discontinuities in payroll history.

4. Industry targeting. Some industries carry a documented history of violations, and the DOL directs proactive enforcement resources accordingly. If you operate in food service, healthcare, hospitality, construction, or retail, your baseline audit risk is simply higher than average — regardless of your own compliance record.

5. Missing or outdated workplace posters. This one surprises people. Failing to display required federal notices — FLSA minimum wage, OSHA rights, EEOC anti-discrimination notices, and others — can itself prompt an inspection, separate from any wage complaint.

Knowing what triggers scrutiny is only half the picture. The other half is understanding the specific mistakes that turn a routine inspection into a costly one.

This is the most expensive mistake on this list, and one of the easiest to make without realizing it. The test the DOL applies isn't about what you call someone on paper — it's about control. If you set their schedule, direct how the work gets done, provide their tools or equipment, or treat them as part of your regular team, they are very likely an employee under federal law, regardless of the label on their 1099.

Misclassification exposure compounds quickly: back taxes, unpaid overtime, unpaid benefits, and penalties can all stack on top of each other once an investigator determines a worker was misclassified — and it's rarely just one worker. If your business has multiple people in the same role classified as contractors, the DOL will typically apply its findings across the whole group.

What to do: When you're unsure whether someone qualifies as a contractor, default to classifying them as a W-2 employee. If you have existing contractor relationships that involve set schedules, ongoing supervision, or company equipment, have them reviewed before an investigator does it for you.

"We don't pay for that" is not a legal defense — but it's one of the most common phrases behind DOL back-wage findings. Under the Fair Labor Standards Act, compensable time isn't limited to scheduled shift hours. It includes:

Employers frequently assume that because a task is brief, or because it happens "off the clock" by convention, it doesn't count. It does. If the employer requires it and it benefits the business, it's generally paid time.

What to do: Audit your timekeeping practices for any required activity that happens before clock-in or after clock-out. If employees are doing paid-adjacent work without being paid for it, fix it — and update your timekeeping system so it captures that time automatically going forward.

Sloppy recordkeeping doesn't just make an audit harder to defend — it can be what triggers the audit in the first place. Investigators look for irregular patterns: wages that suddenly drop for the same employee doing the same job, overtime that appears and disappears without explanation, or timekeeping gaps that don't line up with the rest of your records.

Federal law requires you to keep time and pay records for at least two years — three years in cases involving willful violations. If your records are incomplete or inconsistent when an investigator asks for them, you lose the ability to tell your own side of the story, and the DOL's estimates (often based on employee testimony alone) become the default version of events.

What to do: Keep clean, consistent time and payroll records for every employee, and retain them for at least three years to be safe. If you use a payroll provider, confirm that historical records are actually being preserved and are exportable — not just visible in a dashboard that resets.

Many small business owners check their compliance against federal law and stop there. That's a mistake, because federal law is often the floor, not the ceiling. The Family and Medical Leave Act, for instance, only applies to employers with 50 or more employees — but a growing number of states have their own paid leave laws that apply to businesses with as few as one employee. California, New York, New Jersey, Washington, Colorado, and Massachusetts are among the states with leave requirements well below the federal threshold, and more states add coverage every year.

The same pattern shows up with minimum wage: many states and cities set rates well above the federal $7.25/hour floor, and you're required to pay whichever rate is higher for the location where the work is performed — not just where your business is headquartered.

What to do: Don't assume your business is "too small" for leave or wage laws to apply. Check the specific requirements for every state — and in some cases, every city or county — where you have employees, including remote workers.

This is the mistake that gets the least attention and causes the most unnecessary risk, because it's entirely preventable and costs nothing to fix. Federal law requires you to display several posters in a common area visible to all employees and applicants, including:

All of these are free directly from dol.gov — there's no reason to pay a third party for them. Federal contractors have additional posting requirements, and your state almost certainly has its own required notices on top of the federal list.

What to do: Do a physical walkthrough of your workplace and confirm every required poster is current and visible. If you have remote employees, check whether your state requires you to provide electronic equivalents.

If you want a working list you can actually use — not just read — it comes down to five recurring checkpoints:

None of these require legal expertise to check. They require a deliberate hour of your time, ideally before an investigator asks for it rather than after.

Wage and hour rules, state leave requirements, and enforcement priorities shift constantly — what's accurate this year may not hold next year. The Compliance Brief breaks down exactly these kinds of changes every week, in plain English, for small business owners who don't have time to track federal and state labor law on their own.

If you want the full reference version of this checklist — including current state minimum wage rates, EEOC filing deadlines, and the top HR mistakes that lead to fines — grab the free 2026 HR Compliance Cheat Sheet when you subscribe at thecompliancebriefhq.com.

This article is for informational purposes only and does not constitute legal advice. Employment laws vary by state and change frequently. Consult a qualified employment attorney for guidance specific to your business.