US employment law is a layered system of federal, state, and local regulations that every employer must navigate. For small businesses without a dedicated legal team, non-compliance can be devastating — the Department of Labor recovers over $300 million annually in back wages from employers who violate wage and hour laws alone.
This guide breaks down the six most important federal labor laws that apply to US businesses, explains who they cover, what they require, and what happens if you fail to comply. Whether you have 5 employees or 100, understanding these laws is essential to protecting your business and your people.
1. Fair Labor Standards Act (FLSA)
The FLSA is the foundational federal wage and hour law. It sets minimum wage, overtime pay, recordkeeping, and child labor standards for employees in the private sector and in federal, state, and local governments.
Who It Applies To
Enterprises with annual gross sales of $500,000 or more, or any business engaged in interstate commerce. In practice, this covers nearly all US employers. Individual employees are also covered if their work involves interstate commerce (using phones, email, or handling goods that cross state lines).
Key Requirements
- Minimum wage: Federal minimum is $7.25/hour (many states set higher rates — always apply the higher standard)
- Overtime: Non-exempt employees must receive 1.5x their regular rate for hours worked over 40 in a workweek
- Exempt vs. non-exempt classification: Employees earning below the salary threshold ($35,568/year) are generally non-exempt. Misclassification is one of the most common FLSA violations
- Recordkeeping: Employers must maintain accurate records of hours worked, wages paid, and employee information for at least 3 years
- Child labor: Restrictions on hours and types of work for employees under 18
Penalties
Back-pay for unpaid wages, liquidated damages (double the unpaid amount), civil penalties up to $2,374 per violation for repeat or willful offenders, and criminal prosecution for willful violations (fines up to $10,000 and/or imprisonment). Use our Overtime Pay Calculator to verify your calculations.
2. Family and Medical Leave Act (FMLA)
The FMLA provides eligible employees with up to 12 weeks of unpaid, job-protected leave per year for specified family and medical reasons — with continuation of group health insurance coverage.
Who It Applies To
Private employers with 50 or more employees within a 75-mile radius. Employees must have worked for the employer for at least 12 months and logged at least 1,250 hours in the preceding 12 months.
Key Requirements
- 12 weeks unpaid leave for: birth/adoption of a child, serious health condition of employee or family member, qualifying military exigency
- 26 weeks for military caregiver leave
- Job restoration: Employee must be restored to the same or equivalent position upon return
- Health insurance continuation: Employer must maintain group health coverage during leave
- Notice requirements: Employers must post FMLA notices and provide written rights information
Penalties
Employees can sue for back-pay, benefits, and other compensation lost due to the violation. Liquidated damages (double the monetary loss) may apply. Employers who fail to post required FMLA notices face penalties of up to $204 per offense.
3. Americans with Disabilities Act (ADA)
The ADA prohibits discrimination against individuals with disabilities in employment, public services, and accommodations. Title I specifically covers employment practices.
Who It Applies To
Private employers with 15 or more employees. Covers all aspects of employment: hiring, firing, promotions, training, pay, and benefits.
Key Requirements
- Reasonable accommodation: Employers must provide modifications that allow qualified individuals with disabilities to perform essential job functions, unless it creates an undue hardship
- Interactive process: When an employee requests accommodation, the employer must engage in a good-faith interactive dialogue to identify solutions
- Non-discrimination: Cannot use disability as a factor in hiring, promotion, or termination decisions
- Medical confidentiality: Employee medical information must be kept separate from personnel files and treated as confidential
Penalties
Compensatory and punitive damages up to $300,000 depending on company size. Back-pay, front-pay, attorney's fees, and injunctive relief (requiring policy changes) are also common remedies.
4. Title VII / EEOC (Anti-Discrimination)
Title VII of the Civil Rights Act of 1964, enforced by the Equal Employment Opportunity Commission (EEOC), prohibits employment discrimination based on race, color, religion, sex (including pregnancy, sexual orientation, and gender identity), and national origin.
Who It Applies To
Private employers with 15 or more employees. Also covers employment agencies, labor unions, and federal government agencies.
Key Requirements
- Non-discriminatory practices in hiring, firing, promotions, compensation, training, and all terms of employment
- Anti-harassment policies: Employers must prevent and address workplace harassment, including sexual harassment
- Anti-retaliation: Cannot retaliate against employees who file complaints, participate in investigations, or oppose discriminatory practices
- Poster requirements: Must display "EEO is the Law" poster in a conspicuous location
- Record retention: Must retain employment records for at least 1 year from the date of the personnel action
Penalties
Compensatory and punitive damages up to $300,000 (scaled by company size). Back-pay, front-pay, attorney's fees, and court-ordered policy changes. The EEOC resolved over 73,000 charges in its most recent fiscal year.
5. Occupational Safety and Health Act (OSHA)
OSHA requires employers to provide a workplace free from recognized hazards that are causing or likely to cause death or serious physical harm.
Who It Applies To
Nearly all private-sector employers with at least 1 employee. Certain industries (agriculture, construction, manufacturing) face additional specific standards.
Key Requirements
- General Duty Clause: Maintain a workplace free from recognized serious hazards
- Injury and illness reporting: Employers with 10+ employees must maintain OSHA 300 logs. Severe injuries (hospitalization, amputation, loss of eye) must be reported within 24 hours; fatalities within 8 hours
- Safety training: Employees must be trained on workplace hazards in a language they understand
- Poster display: "Job Safety and Health: It's the Law" poster must be displayed
- No retaliation: Employees cannot be punished for reporting safety concerns or filing OSHA complaints
Penalties
Serious violations: up to $16,131 per violation. Willful or repeated violations: up to $161,323 per violation. Failure to abate: up to $16,131 per day. Criminal penalties (up to 6 months imprisonment) for willful violations resulting in death.
6. COBRA (Health Insurance Continuation)
COBRA (Consolidated Omnibus Budget Reconciliation Act) gives employees and their families the right to continue group health insurance coverage after a qualifying event such as job loss, reduction in hours, or other life events.
Who It Applies To
Private-sector employers with 20 or more employees who offer group health insurance. Many states have "mini-COBRA" laws that apply to smaller employers.
Key Requirements
- Continuation coverage: Must offer 18-36 months of continued health coverage (depending on the qualifying event)
- Notification: Employers must notify the plan administrator within 30 days of a qualifying event. The administrator must then notify the qualified beneficiary within 14 days
- Election period: Beneficiaries have 60 days to elect COBRA coverage
- Same coverage: COBRA coverage must be identical to what active employees receive
Penalties
Excise tax of $100/day per affected individual for failure to comply with COBRA notice requirements. Employees can also sue for benefits, attorney's fees, and statutory penalties up to $110/day.
Compliance Checklist for US Employers
Use this checklist to audit your current compliance posture:
State-Level Considerations
Federal law sets the floor, but many states go further. Key areas where state law often exceeds federal requirements:
- Minimum wage: 30+ states have minimum wages above the federal $7.25. California ($16.00), Washington ($16.28), and New York ($15.00-$16.00) lead the way
- Paid sick leave: 15+ states mandate paid sick leave, though federal law does not require it
- Paid family leave: California, New York, New Jersey, Rhode Island, Washington, Massachusetts, Connecticut, Oregon, Colorado, and Maryland have paid family leave programs
- Pay transparency: States like Colorado, California, and New York require salary ranges in job postings
- Additional protected classes: Many states add marital status, sexual orientation, gender identity, and political affiliation to anti-discrimination protections
The general rule: when federal and state law conflict, you must follow whichever law is more favorable to the employee. Using HR software with compliance features can help you track these requirements automatically. See our Best HR Software for US Businesses guide for recommendations.
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