Two Statutes, a Department of Labor That Never Forgets, and One of the Most Underrated Compliance Traps in Federal Contracting
This article was researched and written by Ask Pub K, drawing on Pub K's curated library of authoritative GovCon documents. It has been lightly edited by Pub K's editors for accuracy and clarity.
Contractors conflate the Service Contract Labor Standards statute and the Davis-Bacon Act requirements at their peril — one wrong wage clause, and a routine services contract can trigger a six-figure back-wage liability, a termination for default, or a debarment referral. Here is what separates the two, and why the line between them is getting redrawn in real time by the government’s ongoing regulatory overhaul.
Two Statutes, Two Different Workers
The Service Contract Labor Standards statute (formerly the Service Contract Act, “SCA”) governs contracts whose principal purpose is furnishing services performed by “service employees” — a broadly defined term covering most non-exempt workers[1]. It applies to covered contracts in excess of $2,500, and any employee who performs the specific services called for — even for a few hours — must be paid the applicable prevailing wage and fringe benefits set out in a Department of Labor wage determination[2].
Davis-Bacon, now codified as the Wage Rate Requirements (Construction) statute, instead governs contracts in excess of $2,000 for construction, alteration, or repair of a “public building” or “public work” within the United States, and requires payment of locality-specific prevailing wages to laborers and mechanics[3].
Where Contractors Get Tripped Up
The two regimes collide most often in “mixed” contracts — operations-and-maintenance work with embedded construction tasks, or privatization deals bundling decades of O&M with upfront construction. GAO has long held that Davis-Bacon applies to the construction portion of an otherwise SCA-covered contract where that work is substantial, separately identifiable, or specifically called out in the solicitation[4]. The Administrative Review Board reaffirmed that public funding — not government ownership of the finished asset — is the touchstone for Davis-Bacon’s “public work” trigger, a holding squarely on point for today’s military and agency privatization deals[5].
On the SCA side, the recurring trap is “non-standard” wage determinations — specialty WDs that depart from the standard county-based rate sets and that unwary contractors routinely misapply, exposing them to underpayment claims years after performance[6]. If an agency omits a required wage determination altogether and later corrects the omission, the contractor is entitled to a price adjustment under the Changes clause — including overhead, G&A, and profit[7].
The Ground Is Shifting — Literally
Both regimes now sit inside FAR Part 22, which the FAR Council began overhauling under the Revolutionary FAR Overhaul (RFO) effective September 30, 2025, and updated again April 20, 2026[8]. Under the model deviation, legacy FAR 22.10 (Service Contract Labor Standards) and FAR 22.4 (Davis-Bacon construction labor standards) no longer appear at those numbers; the operative text now lives at renumbered sections 22.1002-2 and 22.402-4, respectively[9]. Thirty-four agencies have already posted their own adoption deviations, including GSA (via its parallel “RGO” deviation renumbering GSAR Part 522)[10] and DoD, which is separately overhauling DFARS Part 222 under Class Deviation 2026-O0040[11]. Whether the legacy or overhauled numbering governs a given procurement turns entirely on whether — and when — the buying agency adopted the deviation.
The Bottom Line
Treating SCLS and Davis-Bacon as interchangeable “labor standards clauses” is a compliance failure waiting to happen — and one now complicated by an agency-by-agency patchwork of renumbered FAR text. Contractors performing mixed service-construction work, or bidding on any solicitation referencing FAR 22.10 or 22.4, should confirm the buying agency’s RFO adoption status before assuming which clause set — and which numbering — actually controls.
1. JD Supra, “Service Contract Act: What You Really Need to Know” ↩
2. Abrahams Wolf-Rodda, “Now You See It, Now You Don’t: Service Contract Act Coverage of Indirect Employees” (29 C.F.R. §§ 4.150–4.153) ↩
3. FAR Subpart 22.4, Labor Standards for Contracts Involving Construction ↩
4. GAO B-146824, May 28, 1975 ↩
5. Abrahams Wolf-Rodda, “Military Privatization Contracts in the Post-City Center World — Yes, Davis-Bacon Still Applies” (29 C.F.R. § 5.2) ↩
7. Pub K, “What Happens When There Is No SCA Wage Determination In a Contract?” ↩
8. Acquisition.gov, FAR Part Deviation Guide, Part 22 ↩
9. Acquisition.gov, FAR Overhaul — Part 22 (overhauled text) ↩
10. GSA, RGO-2026-01, GSAR Class Deviations (Part 522) ↩
11. DoW/DoD Class Deviation 2026-O0040, Revision 1, DFARS Part 222 ↩
Regulations and agency deviations change frequently; this reflects the position as of October 12, 2026.
