How Minimum Wage Law Works: Federal, State, and Local Rules

What Is Minimum Wage Law?

Minimum wage law establishes a floor below which employers may not legally pay employees for their work. It is one of the oldest and most widely debated forms of labor market regulation, with advocates arguing that it ensures workers receive a basic living wage and opponents arguing that it can reduce employment by making some workers too expensive to hire. In the United States, minimum wages are set at the federal, state, and local levels, creating a complex patchwork of applicable rates.

The federal minimum wage is established by the Fair Labor Standards Act (FLSA), first enacted in 1938 under President Franklin Roosevelt. The original FLSA set a minimum wage of $0.25 per hour. Congress must affirmatively act to raise the federal minimum wage, and it has done so numerous times over the decades. The current federal minimum wage has been $7.25 per hour since 2009 — the longest period without an increase in the law's history. Inflation has eroded the real purchasing power of the federal minimum wage substantially over the decades since its peak value in the late 1960s.

The principle underlying minimum wage law is that the labor market may not always produce wages sufficient to meet basic needs, particularly for workers with limited bargaining power. Proponents argue that minimum wages reduce poverty, decrease reliance on public assistance, and stimulate consumer spending. The economic effects of minimum wage increases have been extensively studied, with research findings that have evolved significantly — most recent research suggests that moderate minimum wage increases have minimal negative employment effects, though the effects of very large increases remain more uncertain.

The Federal-State-Local Hierarchy

The FLSA establishes the federal minimum wage as a floor — states and localities may set higher minimums but may not fall below the federal level. When a state minimum wage exceeds the federal rate, the higher state rate applies to employees in that state. When a local ordinance establishes a minimum wage higher than both federal and state minimums, the highest applicable rate governs. Employers operating in multiple jurisdictions must track the applicable minimum wage in each location and pay accordingly.

As of 2026, the majority of states have minimum wages above the federal $7.25 floor, with some significantly higher. California, Washington State, and Massachusetts have minimum wages above $16 per hour. Many large cities have enacted even higher minimums than their states — New York City, Seattle, San Francisco, and Washington DC have all had minimum wages above $17 per hour. Several states have constitutional or statutory provisions indexing the minimum wage to inflation, providing automatic annual adjustments without requiring legislative action.

States without their own minimum wage laws, or with minimum wages below the federal floor, are subject only to the federal rate. This creates situations where neighboring states have substantially different minimum wages, potentially affecting the location of businesses, commuting patterns, and the competitive position of businesses on either side of a state line. The variation across jurisdictions is a significant operational challenge for multi-state employers.

Exemptions and Special Rules

The FLSA's minimum wage requirements contain numerous exemptions and special categories that apply different rules to certain types of workers or employers. Understanding these exemptions is critical for compliance. The most significant exemptions are for executive, administrative, and professional employees who meet both salary and duties tests — these so-called white-collar exemptions also exempt such employees from overtime requirements and are discussed in more detail in FLSA overtime guidance.

Small businesses with annual gross revenues below $500,000 that do not engage in interstate commerce are not covered by the FLSA. However, individual employees of these businesses may still be covered if their personal work involves interstate commerce. In practice, most businesses that sell goods or services, accept credit cards, or use postal services are considered engaged in interstate commerce. State minimum wage laws typically cover employees not covered by the FLSA.

Agricultural workers have historically been subject to special rules under the FLSA reflecting their exclusion from the original act. Regular agricultural employees of small farms are exempt from minimum wage requirements; those employed by larger farms are covered. Seasonal amusement or recreational businesses, organized camps, and religious or nonprofit educational conference centers may also be exempt. Apprentices and learners may be paid subminimum wages under special certificates issued by the Department of Labor, though these programs are limited in scope and duration.

Tipped Workers and the Tip Credit

Tipped employees — those who customarily and regularly receive more than $30 per month in tips — are subject to special minimum wage rules under the FLSA. The federal tipped minimum wage is $2.13 per hour, a rate unchanged since 1991. The employer may take a tip credit for the difference between the tipped minimum wage and the regular minimum wage, as long as the employee's base wage plus actual tips received equals at least the full minimum wage. If an employee's tips are insufficient to bring their total compensation to the minimum wage, the employer must make up the difference.

Many states have eliminated the tip credit, requiring employers to pay tipped workers the full state minimum wage regardless of tips received. California, Oregon, Alaska, Montana, Nevada, and several other states require full minimum wage for tipped workers. This represents a significant difference for tipped workers — those in California receive the full minimum wage as a guaranteed floor, with tips on top, while those in states with low tipped minimums may receive only $2.13 per hour from their employer and rely on tips to make up the remainder.

The legal requirements around tipping have become more complex in recent years with the proliferation of mandatory service charges. Under the FLSA, tips are the property of the employee and cannot be retained by employers except as part of a valid tip pool. Service charges (a mandatory percentage added to a bill as a line item, such as an automatic 18 percent gratuity on large groups) are not tips — they are revenue of the business that may be distributed to employees at the employer's discretion. Employers are required to inform employees of their tip reporting obligations, and employees must report all tips to comply with tax law.

Youth Minimum Wage and Subminimum Wage

The FLSA allows employers to pay employees under age 20 a youth minimum wage of $4.25 per hour for the first 90 consecutive calendar days of employment. After 90 days, the regular minimum wage applies. The youth minimum wage cannot be used to displace adult workers — employers cannot fire adult workers to replace them with youth workers at the lower rate. Many state minimum wage laws do not include a youth wage differential, requiring full minimum wage for workers of all ages.

The FLSA Section 14(c) program allows employers to obtain certificates permitting payment of subminimum wages to workers with disabilities when their productivity is below that of a comparable worker without a disability. This program has been highly controversial, with disability rights advocates arguing that it institutionalizes wage discrimination and devalues the labor of people with disabilities. A growing number of states have eliminated the subminimum wage for workers with disabilities, replacing sheltered workshops with supported employment that integrates workers with disabilities in community settings at competitive wages.

The ongoing federal minimum wage debate involves questions of economic efficiency, distributional equity, and regional variation. Proposals to raise the federal minimum wage to $15 or higher have faced resistance from rural and lower-cost states where $15 would represent a much larger increase relative to prevailing wages than in high-cost urban areas. Indexed minimums that automatically adjust for inflation, regional variation, or a percentage of median wages have been proposed as more flexible approaches. Whatever the policy outcome, minimum wage law will continue to be among the most consequential areas of employment law affecting the largest number of workers.

Enforcement and Employer Obligations

The Department of Labor's Wage and Hour Division enforces minimum wage requirements, investigating complaints and initiating inspections. Employers found to have violated minimum wage requirements must pay the back wages owed to affected employees plus an equal amount in liquidated damages — effectively doubling the amount owed. Willful violations can result in civil monetary penalties of up to $10,000 per violation. Employers who repeatedly or willfully violate the FLSA can face criminal prosecution.

Employees may also file private lawsuits to recover unpaid wages, liquidated damages, and attorney's fees. Collective actions — lawsuits brought by groups of employees with common claims — are frequently used in minimum wage and overtime cases, as they allow multiple workers with small individual claims to recover collectively and make litigation economically viable. The statute of limitations for FLSA claims is two years for ordinary violations and three years for willful violations.

Proper record-keeping is one of the most important employer obligations under the FLSA. Employers must keep records of hours worked and wages paid for all non-exempt employees for at least two years, and payroll records must be maintained for three years. Failure to maintain adequate records can result in the employer being held liable for wages claimed by employees even when the employer disputes the amount owed, because the burden of proving hours worked can shift to the employer when records are incomplete or inaccurate. Clean, accurate payroll records are among the most important tools for wage and hour compliance.