You worked the hours. Maybe you clocked overtime week after week, or your employer quietly reclassified you as a contractor right around the time the hours got long. Maybe your last paycheck was short, or you never received one at all. Whatever the specific situation, the feeling is the same: you held up your end of the deal, and someone didn't hold up theirs.
Federal law under the Fair Labor Standards Act (FLSA) sets a nationwide floor for wages and overtime, and it gives you real tools to fight back. A properly written demand letter, sent the right way, is often the first step that gets results.
The FLSA gives non-exempt workers 1.5x pay past 40 hours a week
The Fair Labor Standards Act (FLSA), 29 U.S.C. §201 et seq., is the federal law that governs minimum wage, overtime, and worker classification across the United States. Here's what it requires:
- Minimum wage: The federal minimum is $7.25 per hour — but if your state sets a higher minimum, your employer must pay the higher of the two. Always check your state's rate.
- Overtime pay: Under 29 U.S.C. §207, non-exempt employees must receive at least 1.5 times their regular rate of pay for every hour worked beyond 40 in a single workweek. Not a pay period. A workweek.
- Worker classification: Your employer can't just hand you a 1099 form and call you an independent contractor to avoid paying overtime or benefits. The FLSA uses an economic-reality test — meaning it looks at how the work relationship actually functions, not just what label is on a form. Willful misclassification is itself a violation of the FLSA.
- Liquidated damages: If your employer violates the FLSA, you may be entitled to double the amount owed — the unpaid wages plus an equal amount as liquidated damages. Courts can reduce or waive the liquidated damages only if the employer demonstrates it acted in good faith and had reasonable grounds to believe its pay practices were legal. That's a high bar.
Timing matters as much as the amount: the clock is already running. The standard statute of limitations is two years from the date of the violation. If your employer's violation was willful — meaning they knew what they were doing or showed reckless disregard for the law — that window extends to three years. Don't wait.
For more information, the U.S. Department of Labor Wage and Hour Division is the federal agency that enforces the FLSA and publishes plain-language guidance for workers.
Hours, dates, and dollar amounts that make a wage claim concrete
A vague complaint letter is easy to ignore. A specific, documented demand is much harder to brush off. Here's what your letter should cover — and why each piece matters:
- Your full name, job title, and employment dates. Establishes who you are and the timeframe in question. This also signals you've organized your records.
- A clear description of the work performed. Briefly describe your role and the type of work you did. This matters especially if there's a dispute about whether you were exempt from overtime rules.
- The specific pay violations, with dollar amounts. Don't just say "I wasn't paid fairly." Say something like: "I worked approximately 52 hours during the week of March 3–9, 2025, and received straight-time pay for all 52 hours. The 12 overtime hours should have been paid at 1.5x my $18/hour rate, resulting in $108 in unpaid overtime for that week alone." Specificity is credibility.
- A reference to the FLSA and the applicable statute. Citing 29 U.S.C. §207 and the FLSA by name tells your employer you know the law — not just that you're upset. This shifts the tone of the entire exchange.
- A statement about liquidated damages exposure. Noting that willful violations can result in double damages is not a threat — it's a factual statement about the law. It gives the employer a concrete reason to resolve this rather than wait.
- A demand for a specific dollar amount by a specific date. "Please remit $1,440 in unpaid overtime by [date 14 days from mailing]" is actionable. "I want to be paid what I'm owed" is not.
- Notice that you have documentation. Mention that you have pay stubs, timesheets, schedules, or other records. Even if your documentation is imperfect, letting them know you've preserved evidence changes the calculus.
- A statement about next steps if unpaid. Let them know you intend to file a complaint with the Department of Labor's Wage and Hour Division or pursue other remedies if the matter is not resolved. This isn't melodrama — it's the logical next step, and they know it.
Why a signed return receipt beats handing HR the letter
You could email this letter. You could hand it to your manager. You could slide it under HR's door. Here's the problem with all of those: none of them give you proof the letter was received.
USPS Certified Mail with Return Receipt creates a paper trail that's difficult to dispute. You get a tracking number proving the letter was sent. The green return receipt card (or electronic equivalent) comes back to you with a signature and delivery date. If your employer later claims they never got your demand, you have documentation that says otherwise — with a government postmark on it.
In any subsequent dispute, administrative complaint, or legal proceeding, that receipt is evidence. It also demonstrates you took this seriously from the start, which matters.
Send the letter to a specific person — HR director, owner, or whoever handles payroll — and to a verifiable business address. Keep a copy of everything you send.
When an employer pays, disputes your hours, or ignores you
No outcome is guaranteed, and every situation is different. That said, here's a realistic picture of what you might encounter after sending a certified demand letter:
- They pay you. This happens more often than people expect, especially with smaller employers who made a genuine error and don't want a DOL investigation. A formal, documented demand triggers a different response than a verbal complaint.
- They dispute the amount. Your employer may come back and say your hours were different, or that you were exempt from overtime. This is where your documentation matters. Even a partial payment and negotiation is a step forward.
- They ignore it. Silence is frustrating, but it's not the end of the road. You can file a complaint with the U.S. Department of Labor Wage and Hour Division, which can investigate and seek back wages on your behalf at no cost to you. You can also consult a private employment attorney — many handle FLSA cases on contingency, meaning they only get paid if you recover wages.
- They retaliate. It's worth knowing: the FLSA includes anti-retaliation protections. An employer cannot legally fire or punish you for making a good-faith wage complaint. If that happens, document it immediately and consult an attorney.
Does the FLSA protect me if I was paid as a 1099 contractor?
What if I was paid as a 1099 contractor — does the FLSA still protect me?
It might. The FLSA doesn't care what label your employer put on the arrangement. It applies an economic-reality test that looks at things like how much control the company had over your work, whether you worked exclusively for one employer, and whether your work was integral to their business. If those factors point to an employment relationship, you may be entitled to FLSA protections regardless of how you were classified. This is worth discussing with an employment attorney if you believe you were misclassified.
How far back can I claim unpaid wages?
Generally, two years from the date of each violation. If the violation was willful — meaning your employer knew they were breaking the law or acted with reckless disregard — the window extends to three years. Each unpaid paycheck can be its own violation, so the clock starts fresh with each one. But past violations do fall off over time, so acting sooner preserves more of your claim.
Can my employer fire me for sending a demand letter?
The FLSA prohibits retaliation against employees who assert their wage rights in good faith. That said, "prohibited" doesn't mean it never happens. If you experience any adverse action after making a wage complaint — termination, demotion, schedule cuts — document everything immediately and contact an employment attorney or the DOL's Wage and Hour Division.
What's the difference between filing a DOL complaint and sending a demand letter?
A demand letter is a direct communication between you and your employer — private, fast, and often the quickest path to resolution without involving any agency. A DOL complaint opens a formal federal investigation, which is more powerful but slower and less within your control. Many workers send a demand letter first and escalate to the DOL if there's no response. The two approaches aren't mutually exclusive.
Do I need an attorney to send a demand letter?
No. A demand letter is not a legal filing. It's a written notice of your claim and a request for payment. You can write and send one yourself. That said, if your situation involves significant back wages, a complex classification dispute, or potential retaliation, consulting with an employment attorney before or alongside sending a letter is a smart move.