What Is the Service Contract Act?

The Service Contract Act (SCA), formally known as the McNamara-O’Hara Service Contract Act of 1965, is a U.S. labor law that ensures fair wages and benefits for service employees working on federal contracts. Enforced by the U.S. Department of Labor (DOL), the SCA applies to contractors and subcontractors performing services on contracts exceeding $2,500 with federal agencies. Its primary goal is to protect workers from being underpaid in industries where government contracts might otherwise encourage wage suppression.

Purpose and Scope

The Service Contract Act was enacted to prevent contractors from winning federal contracts by paying workers substandard wages and benefits. Prior to the law, service employees who worked on federal projects often received significantly lower compensation than their counterparts in the private sector or other local jobs. The SCA set out to correct this imbalance by requiring government contractors to pay at least the prevailing wage rates and fringe benefits in the locality where the services are performed.

The law applies broadly to contracts entered into by the federal government or the District of Columbia where the primary purpose is to provide services through the use of service employees. These workers perform tasks that range from janitorial and maintenance services to IT support, clerical work, and food services.

Key Provisions

Under the SCA, covered contractors must pay service employees no less than the wage rates and fringe benefits found in wage determinations issued by the DOL. These determinations reflect the average or prevailing compensation in a given geographic area for specific types of work. If a wage determination is not included in a contract, contractors must still pay minimum wages and benefits under SCA requirements.

In addition to setting pay floors, the SCA includes provisions requiring:

• Posting of wage determination notices at the worksite so employees are aware of their rights.
• Recordkeeping of payrolls and compliance for audit purposes.
• Payment of overtime under the Fair Labor Standards Act (FLSA), Contract Work Hours and Safety Standards Act (CWHSSA), or both.
• Compliance by subcontractors working under the prime contractor, as the SCA applies down the contractual chain.

Fringe benefits under the SCA may include health insurance, retirement contributions, vacation, and holiday pay. Contractors can either provide the actual benefits listed or offer cash equivalents.

Covered Employees and Contracts

The SCA applies to "service employees," a term that covers individuals whose job duties are primarily manual or non-exempt under the Fair Labor Standards Act. Examples include drivers, custodians, technicians, and administrative workers. However, certain professional employees (such as licensed engineers or lawyers) and executive roles are usually excluded from coverage.

Contracts that are subject to the SCA include those where the federal government purchases services rather than goods. These can involve work performed on federal property or in contractor facilities, and they span a wide range of service industries. Importantly, the law applies only to contracts over $2,500. For contracts at or below that threshold, contractors must pay the federal minimum wage but are not subject to full SCA wage determinations.

Enforcement and Penalties

The Department of Labor’s Wage and Hour Division (WHD) is responsible for enforcing the SCA. It conducts investigations, audits contractor compliance, and ensures that workers receive the correct compensation. Violations can lead to several consequences:

• Withholding of contract payments to satisfy wage underpayments.
• Suspension or debarment from future federal contracts for up to three years.
• Legal action by the DOL to recover back wages.
• Criminal penalties for willful falsification of records or failure to comply.

Contractors are expected to take reasonable steps to ensure compliance not only in their own operations but also among their subcontractors. Failure to do so can result in joint liability.

Updates and Wage Determinations

Wage determinations are a central part of the SCA. These are periodically updated based on surveys conducted by the Bureau of Labor Statistics (BLS) or other data sources. Contractors are responsible for adhering to updated wage rates when contracts are renewed or extended. The Wage Determinations Online (WDOL) system — now integrated with SAM.gov — provides access to the most current rates.

If a contractor believes a wage determination is incorrect or out of date, there is a process for requesting a review or revision. However, until an official change is issued, the existing wage determination must be followed.

Practical Implications for Contractors

Complying with the SCA adds administrative and financial responsibilities for contractors. They must monitor wage determinations, track employee classifications accurately, maintain compliance documentation, and implement procedures for subcontractor oversight. Failure to plan for SCA obligations can significantly affect project profitability and legal risk.

Contractors bidding on federal service contracts must carefully analyze SCA-covered labor costs during the proposal phase. Misjudging wage obligations can make a winning bid financially unsustainable. For firms new to government contracting, understanding and implementing SCA requirements is critical to maintaining eligibility and avoiding penalties.

The Bottom Line

The Service Contract Act is a foundational labor law in the federal contracting world. It sets minimum standards for wages and benefits that ensure service employees working under government contracts are paid fairly based on local norms. For contractors, compliance is not optional — it is a contractual and legal obligation that requires careful oversight. Understanding the SCA is essential for any business that provides services to the federal government, especially those looking to build a sustainable presence in the public sector.