Which Employment Laws Apply to Small Businesses (by Headcount)

The short answer: your headcount decides which federal employment laws apply to you. Discrimination protections under Title VII and the Americans with Disabilities Act (ADA) kick in at 15 employees. Age discrimination protection under the ADEA kicks in at 20 employees. Unpaid family and medical leave under the FMLA kicks in at 50 employees within a 75-mile radius. But minimum wage and overtime (the Fair Labor Standards Act), equal-pay protections, and the I-9 work-authorization requirement apply to nearly every employer, no matter how small. And in many states, anti-discrimination and paid-leave laws switch on at a much lower headcount than the federal rules do — sometimes at just one or a few employees. A one-person shop can still have real, enforceable duties.

This guide lays out the major federal thresholds so you know which rules apply to you right now, and which ones you'll need to plan for as you grow.

Duties that apply no matter how small you are

These don't have an employee-count exemption for a typical small business:

• Minimum wage and overtime (FLSA). The Fair Labor Standards Act doesn't use an employee-count threshold. Instead it covers businesses through "enterprise coverage" (a dollar-volume-of-business test that catches the great majority of ordinary businesses) or "individual coverage" (any employee whose own work involves interstate commerce — which covers most employees who handle goods, use the phone or internet for business, or process credit cards). In practice, almost every business with even one non-exempt employee needs to track hours and pay at least the applicable minimum wage and overtime. Many states and cities set a higher minimum wage than the federal rate, and the higher rate applies. Confirm current figures at dol.gov.
• Equal pay. The Equal Pay Act, which bars paying employees of one sex less than employees of another sex for substantially equal work, rides along with FLSA coverage — so it applies about as broadly as minimum wage and overtime do. Many states also have their own equal-pay or pay-transparency laws, some of which are stricter and apply to smaller employers.
• Form I-9 work-authorization verification. Every employer, regardless of size, must complete a Form I-9 for every employee hired, verifying identity and authorization to work in the U.S., and keep it on file for the required retention period. There's no small-employer exception. Some states also require participation in E-Verify. See uscis.gov for current I-9 procedure.
• Payroll tax withholding and deposit. If you have even one employee, you're responsible for withholding federal income tax and the employee's share of Social Security and Medicare tax, paying the employer's matching share, and depositing that money with the IRS on schedule. This money is trust-fund money — it belongs to the government the moment it's withheld, and the responsible people in a business can be personally liable for it even if the business itself is an LLC or corporation. See irs.gov.
• Workplace safety. The general duty to provide a workplace free of recognized hazards applies broadly under OSHA, though some specific recordkeeping and posting requirements do vary by employer size and industry. See osha.gov for what applies to you.
• Workers' compensation. Nearly every state requires employers to carry workers' comp coverage once they have even one employee, though the exact trigger and any exemptions (for example, for very small family businesses) vary by state — check your state workers' compensation agency.

15 employees: Title VII and the ADA switch on

Once you reach 15 employees, two of the biggest federal civil-rights laws in the workplace apply to you:

• Title VII of the Civil Rights Act of 1964 bars discrimination and harassment based on race, color, religion, sex (including pregnancy and sexual orientation/gender identity), and national origin, in hiring, firing, pay, promotion, and other terms of employment.
• The Americans with Disabilities Act (ADA) bars discrimination based on disability and requires reasonable accommodation for qualified employees and applicants with disabilities, unless doing so would cause the employer undue hardship.

Two related, newer federal laws use the same 15-employee threshold: the Genetic Information Nondiscrimination Act (GINA), which bars discrimination based on genetic information, and the Pregnant Workers Fairness Act (PWFA), which requires reasonable accommodations for pregnancy, childbirth, and related medical conditions.

The 15-employee count isn't a snapshot — the U.S. Equal Employment Opportunity Commission (EEOC) counts an employer as covered once it has 15 or more employees for each working day in 20 or more calendar weeks in the current or preceding calendar year. That means a business that briefly dips below 15 can still be covered, and a growing business becomes covered partway through the year, not just on January 1. Details are at eeoc.gov.

20 employees: the ADEA (and COBRA) switch on

At 20 employees, using the same 20-calendar-week counting method, the Age Discrimination in Employment Act (ADEA) applies. It bars discrimination against employees and applicants age 40 and older in hiring, firing, pay, and other terms of employment.

Separately (this is a benefits-law threshold, not a civil-rights one, but it's easy to confuse with the ADEA because the number is the same), employers with 20 or more employees that offer a group health plan generally must offer COBRA continuation coverage — the right for employees and their families to temporarily keep that health coverage, at their own cost, after a job loss or certain other qualifying events. See dol.gov.

50 employees: the FMLA switches on

At 50 or more employees within 75 miles of a given worksite, the Family and Medical Leave Act (FMLA) applies. It entitles eligible employees to up to 12 weeks of unpaid, job-protected leave per year for their own serious health condition, a family member's serious health condition, the birth or placement of a child, or certain military-family reasons.

Two counting rules matter here, and businesses often get one of them wrong:

• Employer coverage depends on the 50-employees/75-miles test above, counted the same way as the Title VII 20-week test.
• Employee eligibility is separate: even at a covered employer, an individual employee only qualifies for FMLA leave once they've worked for that employer for at least 12 months and for a minimum number of hours in the preceding 12 months. A covered employer can have employees who aren't yet eligible.

Details and current specifics are at the Department of Labor's FMLA page.

State laws often go lower — sometimes much lower

The federal thresholds above are the floor, not the whole picture. Many states have their own anti-discrimination laws, family and medical leave laws, and paid sick leave laws that apply to much smaller employers than the federal versions do — in some states, coverage starts at just one or a very small handful of employees. States also frequently protect additional categories (like marital status or political activity) that federal law doesn't reach. Because these thresholds and protected categories vary a great deal and change over time, don't assume your state mirrors the federal rules. Check your state labor or human/civil rights agency, or your state's employment or labor department website, for the thresholds that actually apply where you operate — and remember that if you have employees working in more than one state, you may need to comply with more than one state's rules at once.

What to do: counting your headcount correctly

1. Count everyone who's genuinely an employee — full-time and part-time employees generally all count toward these thresholds; independent contractors who are properly classified generally don't. Getting that classification wrong doesn't just risk back taxes and wage claims — it can also falsely put you under a threshold you're actually over. See our coverage of worker classification in the employment section for more.
2. Watch for common ownership. If you run more than one business, or a franchise, or a business with affiliated entities, the employees of related businesses can sometimes be aggregated for purposes of these thresholds under an "integrated employer" or "joint employer" analysis. This is fact-specific — if you have multiple related entities and you're near a threshold, it's worth a conversation with an employment attorney.
3. Track your count over time, not just today. Because Title VII, the ADA, and the ADEA use a 20-calendar-week look-back, and FMLA coverage depends on the prior year, a business that grew (or shrank) recently may already be covered, or may still be covered by rules it thinks it's grown out of.
4. Post required workplace notices. Once a law applies to you, it typically comes with a notice-posting requirement (for example, an EEOC "Know Your Rights" poster once you're covered by Title VII/ADA/ADEA). Posting requirements and exact wording change from time to time — confirm current required postings at eeoc.gov and dol.gov rather than relying on an old poster.
5. When you're close to a threshold, get ahead of it. If you're approaching 15, 20, or 50 employees, that's a good moment to talk to an employment attorney or your state's Small Business Development Center about what new obligations are about to apply, rather than finding out after a complaint is filed.

If a current or former employee has raised a concern about discrimination, harassment, unpaid wages, or wrongful termination, our employment section covers those topics from the employee's side, which can help you understand what a claim against your business might look like. If an employee has been injured on the job, see our coverage in the workers' compensation section for how claims work; your job as the employer is largely about carrying the required coverage and reporting the injury, not handling the claim itself.

Frequently asked questions

Do part-time employees count toward these thresholds?

Generally, yes — for the EEOC-enforced laws (Title VII, ADA, ADEA), the count is based on employees on the payroll for each working day in a calendar week, regardless of whether they work full-time or part-time hours. A part-time employee still counts as one employee for that week.

I have 12 employees. Am I exempt from all discrimination law?

You may be below the federal Title VII/ADA threshold, but check two things: whether your state's anti-discrimination law applies at a lower headcount (many do), and whether you're close enough to 15 that you'll cross the threshold soon, given the 20-calendar-week look-back rule. Also remember that some federal protections — like equal pay — don't have a 15-employee floor at all.

Does the FMLA apply if I have 50 employees total but they're spread across several states?

Only employees within 75 miles of a particular worksite count toward that worksite's FMLA coverage. A business with 50 employees split across distant locations may have no single worksite that meets the 75-mile test, even though the company as a whole has 50 employees. This is one of the more commonly misunderstood parts of the law — confirm your specific situation at dol.gov or with an employment attorney.

If I'm not yet covered by these federal laws, can I still get sued for discrimination?

You can still be subject to your state's anti-discrimination law if it applies at a lower headcount than the federal version, and general legal claims outside the federal employment-discrimination statutes (such as certain contract or tort claims) aren't blocked by these thresholds either. Being under a federal threshold reduces your federal exposure — it doesn't mean you have no legal exposure at all.

Do I need an employment attorney just to figure out which laws apply to me?

Not necessarily for the basic headcount thresholds above — those are publicly documented at eeoc.gov and dol.gov and you can generally work them out yourself. But once you're weighing a specific personnel decision (a termination, an accommodation request, a leave request) against these laws, or you have a multi-entity ownership structure that might trigger aggregation, that's a good time to get advice from a qualified employment attorney rather than guessing.

This article provides general information, not legal, tax, or financial advice.