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Jul 17, 2026

Building your Service Contract Labor Standards (SCLS) Compliance Blueprint

For employers performing work under covered federal service contracts, wage and hour compliance extends beyond the Fair Labor Standards Act (FLSA). The Service Contract Labor Standards (SCLS)—formerly known as the Service Contract Act (SCA)—requires contractors and subcontractors performing covered federal service contracts generally exceeding $2,500 to pay covered service employees at least the applicable prevailing wage rates and fringe benefits established by the U.S. Department of Labor.

Common SCLS compliance mistakes include:

Misclassifying employees into the wrong labor category.
Paying less than the applicable wage determination.
Failing to provide the required health and welfare fringe benefit.
Using outdated wage determinations after a contract renewal or option year.
Failing to post the applicable wage determination at the worksite.
Maintaining inadequate payroll and labor records to demonstrate compliance.

Unlike many private-sector wage and hour issues, SCLS violations can affect both your workforce and your federal contract. Noncompliance may result in back wage liability, withheld contract payments, contract disputes, or even debarment from future federal contracting opportunities in serious cases.

Your First SCLS Contract

For new government contractors subject to SCLS, the biggest compliance mistakes usually happen because they treat SCLS like a normal benefits or payroll issue. It is really a contract compliance obligation that affects HR, payroll, accounting, contracts, and operations. Highlights include:

Confirm Whether the Contract Is Covered by SCLS - Not every federal contract requires SCLS compliance.

Before applying SCLS requirements, contractors should confirm:

The contract is a covered service contract.
The contract value exceeds the applicable threshold (generally $2,500).
The contract incorporates the required SCLS clauses and Wage Determination.

Obtain and Review the Correct Wage Determination - The Wage Determination is the foundation of SCLS compliance. Do not use an old Wage Determination from a previous contract or assume the same rates apply to all employees. Always review the Wage Determination at contract award/renewal/modification for:

Geographic location covered by the contract.
Labor classifications.
Minimum hourly wages.
Health and welfare fringe benefit requirements.
Vacation and holiday requirements.
Effective dates.

Properly Classify Employees - Choosing the lowest-cost labor category without confirming duties align with the classification can lead to compliance issues. Employees must be matched to the correct labor category based on their actual duties—not simply their job title. For example an employee titled "Administrative Assistant" may actually perform duties that align with a different Wage Determination classification.

Track SCLS Hours Separately - SCLS obligations are generally tied to hours worked on covered contracts and contractors should not apply one company-wide payroll approach without distinguishing SCLS-covered employees.. Contractors should be able to identify:

Which employees worked on covered contracts.
Hours worked under each contract.
Applicable Wage Determination.
Benefits provided for those hours.

Understand Health & Welfare Fringe Benefit Administration - The H&W fringe benefit is one of the most misunderstood areas. Contractors should assume employee enrollment in a company benefit plan automatically satisfies the H&W obligation. Contractors should:

Reconcile required H&W amounts against qualifying benefits provided.
Maintain documentation supporting benefit costs.
Address any shortfalls through additional benefits or cash equivalent payments.

Do Not Overlook Vacation Benefits - Unlike typical private-sector PTO policies, SCLS vacation benefits may be a contractual obligation. Issues arise if contractors apply the standard company PTO policy to SCLS-covered employees without reviewing the Wage Determination:

Review the Wage Determination vacation requirements.
Track employee eligibility.
Recognize predecessor contractor service when applicable.
Maintain separate records for SCLS vacation accrual.

Maintain Required Payroll Records - SCLS-covered contractors must maintain accurate records, including:

Employee name and address.
Job classification and wage rates paid.
Fringe benefits provided.
Hours worked and payroll deductions

Train Supervisors and Program Managers - Supervisors should understand:

Employees cannot work outside recorded hours.
Employees cannot perform higher-level duties without review.
Time must be accurately reported.
Changes in assignments may impact classifications.

Review Contract Changes - Continuing old payroll practices after a contract modification changes requirements as contract modification can change SCLS obligations. Contractors should review:

Option year renewals.
New Wage Determinations.
Additional labor categories.
Changes in work location.
Increased contract scope.

Compliance Spotlight

A U.S. Government Accountability Office (GAO) review of DOL enforcement found that between FY 2014-2019:

The DOL completed more than 5,000 Service Contract Act (now SCLS) investigations.
Approximately 68% of investigations resulted in violations.
Employers agreed to pay approximately $224 million in back wages.
60 employers were debarred from receiving new federal contracts for three years.

Service Contract Labor Standards (SCLS) violations can have consequences beyond back wages. In one case, a federal food service contractor was ordered to pay more than $1.4 million in back wages to employees and was debarred from bidding on federal contracts for three years after the Department of Labor found it failed to pay the required prevailing wages and fringe benefits.

More recently, the Department's Administrative Review Board affirmed another three-year debarment where a contractor failed to timely implement a revised wage determination after a contract modification—even though the contractor ultimately paid the affected employees. These cases underscore the importance of reviewing wage determinations whenever a contract is awarded, renewed, or modified.

Health and Welfare Fringe Benefits

The health and welfare fringe benefit is one of the most commonly misunderstood SCLS requirements. For example, if an employee works 2,000 hours on an SCLS-covered contract during the year, a $5.36/hour fringe benefit requirement equates to $10,720 annually in required fringe benefits. Failing to account for this cost when pricing a government contract can significantly reduce—or eliminate—the contract's profitability.

Before submitting a proposal—or whenever a contract is renewed or modified—verify the applicable wage determination, confirm employee labor classifications, review fringe benefit calculations, and ensure payroll is aligned with current contract requirements. For additional guidance on SCLS compliance, the U.S. Department of Labor offers several employer resources:

Example: Service Contract Labor Standards (SCLS) Wage Determination

A federal contractor is awarded a janitorial services contract

for a federal office building in Fairfax County, Virginia.

The solicitation includes a U.S. Department of Labor Wage Determination

applicable to that geographic area.

Labor Classification

Minimum Hourly Wage

Health & Welfare Fringe Benefit*

Janitor

$22.15/hour

$5.36/hour

General Clerk II

$27.84/hour

$5.36/hour

Administrative Assistant

$32.47/hour

$5.36/hour

*Illustrative example only. Wage rates and fringe benefit requirements vary by Wage Determination, location, and contract. Employers should always refer to the Wage Determination incorporated into their federal contract.

If a contractor hires a Janitor to perform work under this contract, the employee generally must receive at least:

$22.15 per hour in wages, and
An additional $5.36 per hour in fringe benefits, which may be provided through bona fide benefits (such as health insurance or retirement contributions) or, if permitted, paid as cash in lieu of benefits.

If the employer pays only $20.00 per hour and does not provide the required fringe benefit, the contractor may owe back wages and fringe benefits for every hour worked under the contract.

The Department of Labor's Wage Determinations are available through the official SAM.gov Wage Determinations database. Employers can search by contract type, state, county, or locality to identify the prevailing wages and fringe benefits applicable to a federal contract.

Vacation Benefits

Vacation benefits are one of the biggest differences between SCLS-covered employees and non-SCLS employees, and they are also one of the most common compliance issues for government contractors. Under the Service Contract Labor Standards (SCLS), vacation is not simply an employer policy. If the applicable Wage Determination includes a vacation benefit (most do), the contractor is legally required to provide that vacation benefit to covered service employees who meet the eligibility requirements. This is separate from—and in addition to—the health and welfare fringe benefit. }

Key Differences

Non-SCLS Employees

SCLS-Covered Employees

Vacation is generally voluntary under federal law unless required by state law or company policy.

Vacation may be required by federal law through the contract's Wage Determination.

Employer determines eligibility, accrual, carryover, and payout (subject to state law).

Eligibility and minimum vacation entitlement are established by the applicable Wage Determination and cannot be reduced below the required minimum.

Vacation policies may be changed prospectively (subject to applicable law).

Contractors must continue to meet the minimum vacation benefit required by the Wage Determination for covered employees.

Suppose a Wage Determination provides:

2 weeks of paid vacation after one year of service
3 weeks after five years
4 weeks after fifteen years

If a contractor's standard PTO policy provides only one week of vacation after one year, that policy would not satisfy the SCLS requirement for covered employees. The contractor would need to provide at least the vacation benefit required by the Wage Determination to employees performing work on the covered contract.

Successor Contractor Rule

Another unique SCLS requirement is that an employee's length of service may carry over when a federal contract changes contractors. For example:

Contractor A loses the contract.
Contractor B wins the recompete and hires many of the incumbent employees.
An employee has 8 years of continuous service on that contract.

For vacation purposes, Contractor B generally must recognize that prior service rather than treating the employee as a new hire. This is a significant departure from most private-sector PTO policies, where vacation is typically based only on service with the current employer. Because vacation under SCLS is tied to the applicable Wage Determination and, in many cases, an employee's continuous service on the contract, many government contractors:

Maintain separate PTO/vacation policies for SCLS-covered employees.
Track SCLS service dates separately from company hire dates.
Configure payroll and HRIS systems to apply different accrual rules for covered employees.
Review vacation entitlements whenever a contract is awarded, renewed, or transitions to a successor.

When onboarding a new SCLS contract, identify which employees are covered by the Wage Determination and review both the required health and welfare fringe benefit and the required vacation schedule. If your organization hires incumbent employees from the previous contractor, obtain documentation of their qualifying service so vacation benefits are administered correctly from day one.

Health and Welfare Fringe Benefit Reconciliation

One of the most common SCLS compliance challenges involves properly administering and tracking the required health and welfare (H&W) fringe benefit. Contractors must ensure that covered employees receive at least the fringe benefit amount required by the applicable Wage Determination for every eligible hour worked on the contract.

Because H&W benefits are often provided through a combination of employer-paid benefits and cash payments, contractors should periodically reconcile their fringe benefit obligations to confirm compliance. A proper reconciliation helps identify whether the value of qualifying benefits provided to employees meets or exceeds the required SCLS fringe benefit rate. A periodic H&W reconciliation should include:

Reviewing the applicable Wage Determination to confirm the required H&W rate.
Calculating the total H&W obligation based on covered employee hours worked.
Comparing required fringe obligations against qualifying employer-paid benefits, such as health insurance premiums, retirement contributions, or other allowable benefits.
Identifying any shortfalls that may require additional payments to employees.
Maintaining documentation supporting the benefit calculations and payments.

For example, if an employee works 1,800 SCLS-covered hours during a contract year and the applicable Wage Determination requires a $5.36 per hour H&W fringe benefit, the contractor has a fringe benefit obligation of $9,648 for that employee. If the contractor only provided $8,500 in qualifying benefits, the remaining balance may need to be paid to the employee such as an employer retirement contribution, or a properly documented cash equivalent payment.

Contractors should establish a regular review process—such as monthly, quarterly, or at contract milestones—to reconcile SCLS H&W obligations. Regular monitoring helps prevent small discrepancies from accumulating into significant back wage liabilities during a Department of Labor investigation.

How C2 Essentials Can Help

Maintaining compliance with the Service Contract Labor Standards (SCLS) requires more than processing payroll correctly. Contractors must ensure employees are properly classified under the applicable Wage Determination, receive the required prevailing wages and fringe benefits, administer vacation benefits correctly, and maintain accurate payroll and contract records. Regular reviews of contract modifications, wage determinations, and payroll practices can help identify compliance issues before they become costly liabilities.

C2 Essentials partners with government contractors to navigate the complexities of SCLS compliance by assisting with wage determination reviews, employee labor classifications, fringe benefit administration, payroll compliance, and HR policy guidance. If your organization has questions regarding SCLS requirements or needs assistance evaluating its compliance practices, contact your HR Business Partner or Payroll Team before a minor oversight results in back wages, contract disputes, or a Department of Labor investigation.

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