Federal employment laws: what applies to your business

A plain-English map of the main federal employment laws, which employers they cover and what each one asks you to do.

In shortMost federal employment laws apply once you reach a certain number of employees. The Fair Labor Standards Act, the Equal Pay Act, OSHA, the NLRA and Form I-9 rules apply to almost every employer. Anti-discrimination laws such as Title VII and the ADA start at 15 employees, age discrimination rules at 20, COBRA at 20, FMLA at 50 and the WARN Act at 100. State and city laws often go further.

Why employee count matters

Federal employment laws do not all switch on at once. Several are tied to how many people you employ, and the way you count differs from law to law. Title VII, for example, counts employees who worked for you in each of 20 or more calendar weeks in the current or previous year. FMLA counts employees on the payroll for 20 or more workweeks and also asks how many work within 75 miles of the employee’s worksite.

So the first step is simple: know your headcount by week, including part-time employees. Part-time staff count as employees for most of these thresholds. Independent contractors generally do not, but only if they are properly classified. See our guide on independent contractors vs employees before you leave anyone out of the count.

The laws that apply to almost every employer

Federal laws with no or very low employee thresholds
Law What it covers What it asks of you
Fair Labor Standards Act (FLSA) Minimum wage, overtime, recordkeeping, child labor Pay at least the federal minimum wage, pay overtime at 1.5 times the regular rate after 40 hours in a workweek for non-exempt staff, and keep accurate time and pay records
Equal Pay Act Pay differences based on sex Pay men and women equally for substantially equal work in the same establishment, unless a legitimate factor such as seniority or merit explains the gap
Occupational Safety and Health Act Workplace safety Keep the workplace free of recognized serious hazards and follow the OSHA standards that apply to your work
National Labor Relations Act (NLRA) Employees’ rights to act together Do not interfere with employees discussing pay or working conditions or organizing, whether or not you have a union
Immigration Reform and Control Act Work authorization Complete Form I-9 for every new hire and do not discriminate based on citizenship or national origin
USERRA Military service Give reemployment rights to employees returning from military service and do not discriminate based on service
Employee Polygraph Protection Act Lie detector tests Generally do not require or use polygraph tests for hiring or employment decisions

The FLSA reaches most businesses through “enterprise” or “individual” coverage, and in practice almost every employer with hourly staff should assume it applies. Its recordkeeping rules are the reason accurate timekeeping matters: you must keep hours worked each day and each workweek for non-exempt employees. Our FLSA overtime rules guide covers the details.

Laws that start at 15, 20, 50 and 100 employees

Federal laws with employee thresholds
Threshold Law Main requirement
15 employees Title VII of the Civil Rights Act No discrimination based on race, color, religion, sex (including pregnancy, sexual orientation and gender identity) or national origin
15 employees Americans with Disabilities Act (ADA), Title I No disability discrimination; provide reasonable accommodation unless it causes undue hardship
15 employees Pregnancy Workers Fairness Act Provide reasonable accommodation for known limitations related to pregnancy, childbirth or related conditions
15 employees Genetic Information Nondiscrimination Act (GINA) Do not use or request genetic information, including family medical history, in employment decisions
20 employees Age Discrimination in Employment Act (ADEA) No discrimination against workers aged 40 and older
20 employees COBRA Offer continuation of group health coverage after qualifying events such as job loss
50 employees Family and Medical Leave Act (FMLA) Up to 12 weeks of job-protected unpaid leave for eligible employees, with health coverage maintained
50 employees ACA employer mandate Applicable large employers must offer affordable coverage or may owe a payment, and must file Forms 1094-C and 1095-C
100 employees WARN Act Give 60 days’ notice before covered plant closings and mass layoffs

Counting rules differ, so treat this table as a starting point. The ACA threshold counts full-time employees plus full-time equivalents, not just full-time staff, so a business with many part-time workers can cross it earlier than expected. Federal contractors face further rules that are outside the scope of this guide.

Notices, posters and records

Several of these laws require you to display a notice where employees can see it. The Department of Labor and the EEOC publish free posters, including the FLSA minimum wage poster, the “Know Your Rights” EEO poster, the FMLA poster for covered employers, the OSHA “Job Safety and Health” poster and the USERRA notice. If many employees work remotely, many employers also share the notices electronically.

Records matter as much as posters. Keep payroll and time records for at least three years under the FLSA, and the timecards and schedules that support them for at least two. Keep I-9 forms for three years after hire or one year after employment ends, whichever is later. Our guide to time record retention explains the details, and many states require longer.

Where state and local law takes over

Federal law is the floor. States and cities often add higher minimum wages, daily overtime, paid sick leave, meal and rest breaks, predictive scheduling, pay transparency and lower thresholds for anti-discrimination laws. When federal and state rules differ, you generally must follow whichever is more protective for the employee.

Use our state labor law pages to see the main rules where you operate.

A practical compliance routine for small businesses

  1. Know your headcount by week and by location, including part-time staff.
  2. Classify each role as exempt or non-exempt, and each worker as employee or contractor, and write down why.
  3. Track all hours worked for non-exempt staff, including early clock-ins, training and short breaks.
  4. Put the required notices up and give new hires the documents your state requires.
  5. Write simple policies for leave, accommodation requests, harassment complaints and timekeeping in an employee handbook.
  6. Review once a year and whenever you cross a headcount threshold or open in a new state.

Most claims against small employers come from wage and hour issues: unpaid overtime, off-the-clock work and missing records. Accurate time records are the cheapest protection you can buy. See how to protect your business from wage and hour claims.

How EZTime helps

EZTime records clock-ins and clock-outs, breaks and overtime for every hourly employee, keeps an audit trail of timecard corrections and sends labor rule alerts before overtime thresholds are crossed. Signed policies and forms are stored in each digital employee file. It does not replace legal advice, but it gives you the records that most of these laws rely on.

Frequently asked questions

Does the FLSA apply to my small business?

In practice, most businesses with hourly employees should assume it does. Coverage can come from the business (enterprise coverage) or from an individual employee’s work, such as handling goods that cross state lines.

Do part-time employees count toward thresholds?

Yes, for most laws. Title VII and the ADA count every employee on the payroll for each working day in 20 or more weeks, including part-time employees.

Are independent contractors counted?

Generally no, if they are correctly classified. If a worker is misclassified, they may count and be owed back wages and benefits.

What happens if federal and state law conflict?

Usually you must follow the rule that gives the employee more protection, such as the higher minimum wage.

Which posters do I need?

At least the FLSA minimum wage poster, the EEO “Know Your Rights” poster if you have 15 or more employees, the OSHA poster and any posters for laws that apply to you, such as FMLA. Your state has its own list.

How long should I keep payroll records?

At least three years for payroll records under the FLSA and two years for timecards and schedules. Many states require longer.

Where to go next

Related guides and tools

Labor rule alerts

Set overtime thresholds and weekly hour limits in EZTime and managers get an alert while there is still time to change the schedule. See current plans and what each one includes on the pricing page.

Disclaimer: This guide is general information only and is not legal advice. Federal, state and local employment laws change and depend on your situation. Check the U.S. Department of Labor, the EEOC, your state agencies or a qualified employment attorney.