Section 125 Plan for Construction Companies: The 2026 Employer Guide

• Construction employers recapture 7.65% in employer FICA on every pre-tax dollar a laborer, tradesman, or foreman elects, whether or not the job is a federally funded, Davis-Bacon-covered project.
• A 22-employee electrical subcontractor generates approximately $7,737 per year in employer FICA recapture at typical 2026 election levels.
• Construction laborers earned a median $47,130 per year and electricians earned a mean $71,490 per year in May 2025, according to the U.S. Bureau of Labor Statistics Occupational Employment and Wage Statistics survey.
• The U.S. Small Business Administration's 2025 Construction Small Business Profile counts 781,192 small construction firms employing 5,942,593 people, 80.7% of the industry's total workforce.
• The construction industry needs to attract an estimated 349,000 net new workers in 2026 to meet demand, according to Associated Builders and Contractors (ABC).

Before an AECOM field superintendent on a Houston highway project takes home more of his $86,000 salary, he elects $570 a month in medical, dental, and vision premiums through his employer's Section 125 cafeteria plan. Federal income tax and FICA both shrink on that election before his W-2 is calculated. Texas levies no state income tax, so that is the entire tax story for him. A journeyman electrician on the same firm's Chicago project earning $71,500 gets a third layer of savings, Illinois's 4.95% flat income tax, on an identical election structure. Neither of these two workers, nor the apprentice sweeping the job trailer, had this modeled for them before. The full benefit stack every participant receives is in the table below.

Construction paycheck: the real FICA cost by trade

Take a general engineering contractor with crews on a Texas highway job and an Illinois commercial build. Three distinct trade classifications on every payroll: a salaried field superintendent, a journeyman tradesman, and an apprentice or laborer. Each one overpays federal income tax and FICA on every benefit dollar purchased post-tax. Consider the superintendent first.

AECOM field superintendent, Houston, Texas. $86,000 per year. Single. Electing $460 per month in medical premiums and $110 per month in dental and vision. Total monthly election: $570. Biweekly election: $285. At $86,000 single, this superintendent sits in the 22% federal bracket. Texas has no state income tax.

This superintendent takes home $169.00 more per month in tax savings on identical compensation and identical coverage. Per-paycheck tax savings: federal income tax $62.70, Social Security $17.67, Medicare $4.13, totaling $84.50 per paycheck. The employer recaptures $285 x 7.65% x 26 = $566.87 per year in FICA on this single employee.

Now the journeyman electrician on the same firm's Chicago project, earning $71,500 in total W-2 compensation, matching the BLS May 2025 mean annual wage for electricians↗ of $71,490. Single. In the 22% federal bracket. Electing $380 per month ($190 biweekly). Federal income tax savings: $190 x 22% = $41.80 per paycheck. Social Security savings: $11.78. Medicare savings: $2.76. Illinois's 4.95% flat income tax adds a third layer: $9.41 per paycheck. Monthly take-home improvement: approximately $131.50. Employer FICA recapture on this one electrician: $190 x 7.65% x 26 = $377.91 per year.

An apprentice or laborer on the same crew, earning the BLS median annual wage for construction laborers↗ of $47,130, in the 12% federal bracket, electing $220 per month ($110 biweekly), saves $21.62 per paycheck and improves monthly take-home by roughly $43.24. The employer recaptures $110 x 7.65% x 26 = $218.79 per year on this laborer alone. For a 22-employee electrical subcontractor with 14 journeyman electricians, 6 apprentices, and 2 foremen at these typical election levels, total employer FICA recapture runs approximately $7,737 per year.

"We thought the only payroll tax tool available to us on federal jobs was the Davis-Bacon fringe credit our accountant already tracks. Nobody had shown us that §125 runs on a completely separate part of the paycheck, on every job, federal or private. We had 22 people between three crews and were leaving nearly $8,000 a year in FICA on the table. We launched in four weeks."

Section 125 and the Davis-Bacon Act: what contractors must know

DBRA fringe benefit credit and §125: two separate compliance tracks

In our work with construction employers, the most common misconception is that a §125 plan somehow overlaps with, or is limited by, the Davis-Bacon and Related Acts (DBRA) fringe benefit credit on federally funded work. It does not. Under Department of Labor Fact Sheet #66E↗, a contractor's prevailing wage obligation on a covered project can be met through cash wages, bona fide fringe benefit contributions, or a combination of both. The fringe benefit rate is set by the applicable wage determination and is calculated on the hours worked on covered projects, following the annualization principle in 29 CFR § 5.25(c).

A §125 cafeteria plan operates on a different input entirely. It lets an employee elect to pay for medical, dental, vision, or dependent care benefits using pre-tax salary reduction from wages already earned, reducing W-2 Boxes 1, 3, and 5 by the elected amount. The DBRA fringe credit and the §125 election are calculated on separate bases and do not offset each other. One important nuance from Fact Sheet #66E: a contractor's own administrative expenses in running a benefit plan, including tasks like tracking contributions or filing claims paperwork, are explicitly not creditable toward the DBRA fringe obligation, whether performed in-house or by a third party. Contractors should keep §125 administration and DBRA fringe accounting on separate ledgers and confirm treatment with DBRA counsel before assuming any cost is dual-purpose.

What §125 actually changes on a prevailing-wage payroll

Whether a contractor satisfies its DBRA obligation entirely in cash wages, which the Department of Labor notes is the most operationally common approach, or through a mix of cash and bona fide fringe contributions, the wages that reach an employee's W-2 remain ordinary reportable wages once paid. A §125 election applies to that reported wage income the same way it would on any private, non-covered job. A laborer earning the full prevailing wage entirely in cash on a federal highway project electing $220 per month in §125 benefits saves federal income tax and FICA on that election exactly as a laborer on a private commercial job would. The prevailing wage floor does not change how §125 is calculated; it only changes the wage base the election is calculated against.

Employer FICA recapture: the construction math

Every pre-tax election dollar recaptures 7.65% for the employer in FICA, on every job site, covered or private. For a construction employer, the aggregate recapture depends on headcount, trade mix, and average election amount.

These are employer-side FICA recapture figures only. Add the employee-side monthly take-home improvement, $43 to $169 per employee per month depending on wage and election level, and the aggregate value of the benefit stack (zero-cost virtual care, $0 medications, dental, vision) and the total annual value per participating employee runs $1,000 to $2,300. See the full cost and net savings breakdown→ for any employer size and election level.

What construction crews actually get

Field construction workers face some of the hardest healthcare access barriers of any U.S. workforce. Shifts start before sunrise, run through summer heat and winter cold, and rarely align with a clinic's 9-to-5 hours. According to the Bureau of Labor Statistics 2023 National Compensation Survey↗, only about half of construction workers have access to employer-sponsored medical benefits, well below the access rate in professional and business services. A workforce that also carries some of the highest rates of on-the-job injury of any industry, per BLS injury and illness data↗, is precisely the workforce a $0 virtual care benefit stack was built for.

• $0 Virtual Urgent Care, 24/7: A laborer who twists an ankle on a Tuesday job site or wakes up with a fever before a 5am crew call cannot wait for a clinic to open. Zero-cost virtual urgent care meets the schedule construction actually runs on.
• $0 Virtual Primary Care: Routine visits, prescription renewals, and chronic condition management at no cost, without taking a full day of unpaid time off a job site to sit in a waiting room.
• $0 Mental Health Counseling: Construction carries one of the highest suicide rates of any major industry, according to the Centers for Disease Control and Prevention. Zero-cost virtual mental health counseling, accessible without scheduling weeks out, is consistently the highest-rated benefit in post-enrollment surveys at construction employers Benecor has worked with.
• 800+ commonly prescribed medications at $0, fully covered: Generics and maintenance medications for hypertension, diabetes, and pain management at no out-of-pocket cost, removing the cost barrier that keeps field workers from managing conditions that get worse under physical strain.
• $0 Message a Specialist: For crews working rural highway, pipeline, or wind farm projects far from a specialist's office, asynchronous specialist access without a co-pay is genuine primary care infrastructure, not a convenience feature.
• Procedures at 57% savings, specialist visits at 35% off, lab tests at 60% off, imaging at 75% off: When an injury does require in-person care, crews use it instead of delaying treatment until a strain becomes a disability claim.
• Dental, vision, and family coverage with 350,000+ doctors nationwide: For traveling crews on multi-month industrial or pipeline assignments, coverage follows the worker to whatever state the next job site is in.

Section 125 for construction companies from 5 to 6,500+ employees

Small specialty trade subcontractors: 5 to 25 employees

The independent electrical, plumbing, or HVAC subcontractor has no corporate benefits department and no time to navigate ERISA compliance alone. It also has the most to gain per payroll dollar, because the owner is personally exposed to every uncaptured FICA dollar. A 22-employee Houston electrical subcontractor with 14 journeyman electricians, 6 apprentices, and 2 foremen generates approximately $7,737 per year in employer FICA recapture. On a subcontractor operating with tight margins on bid work, that shows up on the first pre-tax payroll and continues every cycle employees stay enrolled.

For small subcontractors, the plan document, nondiscrimination testing, and payroll configuration is handled entirely by Benecor. The owner selects the benefit menu in Week 1, reviews and signs the plan document in Week 2, and runs the first pre-tax payroll by Week 4. No additional office staff required. Review the full §125 implementation and compliance flow→ for any employer size.

Regional general and mechanical contractors: 25 to 500 employees

A 65-employee regional mechanical or HVAC contractor running commercial build-outs across two or three states generates approximately $17,901 per year in employer FICA recapture at typical election levels. A 250-employee regional general contractor, with field crews plus office and estimating staff, generates approximately $75,735 per year. These employers face a specific §125 design question that small subcontractors do not: crews assigned to job sites in different states within the same plan year, each with a different state income tax treatment.

Benecor's multi-state plan documents address this directly. A crew reassigned mid-year from a Texas job site to an Illinois job site does not require a new plan document, only a withholding update reflecting the new job site's state tax layer. QR-code digital enrollment by crew or job site allows each site to enroll during a toolbox talk without a central HR function.

Large national contractors and enterprise EPC firms: 500+ employees

Bechtel employs approximately 55,000 people worldwide. AECOM employs approximately 87,000. Kiewit Corporation employs approximately 27,800 people, according to workforce data compiled by Revelio Labs. Skanska USA employs approximately 6,500 people generating $7.1 billion in annual revenue. DPR Construction, an employee-owned firm, employs approximately 11,000. Whiting-Turner employs approximately 5,500. Clark Construction Group employs approximately 4,625. These employers already operate benefit programs of varying sophistication, but sophistication in benefit design does not guarantee maximum FICA recapture. The question at scale is not whether a §125-eligible benefit exists but whether enrollment participation is high enough, and elections are structured well enough, to capture the full available recapture across every job site and every trade classification.

At a 6,500-employee scale, a 10-percentage-point increase in enrollment participation at average elections of $340 per month represents roughly $203,000 per year in additional employer FICA recapture. The bottleneck at large contractors is rarely compliance. It is enrollment communication reaching field crews who are never in the same room as a benefits administrator. Role-specific enrollment, delivered at the job site rather than through a generic benefits packet, is where large-contractor FICA recapture is actually recovered.

General contractors vs. specialty trade subcontractors

Wage profiles and election levels vary meaningfully by trade. A residential plumbing or electrical subcontractor's workforce skews younger with a higher share of apprentices. A heavy civil or industrial EPC contractor running pipeline, refinery, or data center work carries a wider wage distribution, from laborers through highly paid traveling specialists, and often includes crews receiving non-taxable per diem on top of W-2 wages. Compare the restaurant and hospitality §125 vertical→ for a similarly wage-diverse, hourly-driven workforce.

Compliance: union rules, multi-state crews, and nondiscrimination testing

Union vs. open-shop construction crews

Whether §125 applies to a given crew depends on how that crew's health and welfare benefits are structured. Union crews whose health coverage runs through a multiemployer Taft-Hartley trust fund under a collective bargaining agreement are generally covered by that trust's own benefit structure, negotiated separately from any single employer's §125 plan. Open-shop crews, and office, estimating, and management staff at union contractors who fall outside the CBA trust, are standard §125 candidates. According to the SBA's 2025 Construction Small Business Profile, 781,192 small construction firms, 99.8% of all construction firms, most of them open-shop, employ 5,942,593 people, 80.7% of the industry's total workforce.

Multi-state job sites and traveling crews

Construction crews move. A pipeline or industrial turnaround crew based in one state may spend a plan year working job sites in three or four states. State income tax withholding, and therefore the third layer of §125 savings, generally follows the state where the work is physically performed, not the employer's home state. Benecor's plan documents are built for this: a single plan document covers a crew regardless of which state's job site they are assigned to, while payroll withholding is updated per job site. Per diem and lodging reimbursements that meet IRS accountable plan rules stay outside W-2 wages entirely and are unaffected by the §125 election, consistent with how the DBRA treats transportation, board, and lodging as separate from fringe benefits under 29 CFR § 5.29↗.

Nondiscrimination testing for wide wage gaps

Construction employers often show the widest wage distribution of any §125 vertical: apprentices and laborers at $34,000 to $47,000, journeyman tradesmen at $55,000 to $80,000, foremen and superintendents at $75,000 to $95,000, and owners or principals at $150,000 to $300,000 or more. Section 125 requires an Eligibility Test, a Benefits and Contributions Test, and a Key Employee Concentration Test, which limits the share of total plan benefits going to key employees, generally owners and officers earning above $220,000 in 2026, to 25%. A 65-employee mechanical contractor with 55 field and shop employees and 10 management-level staff will not face a concentration test failure unless ownership is unusually concentrated among a small group of high earners consuming most plan benefits. Benecor confirms nondiscrimination pass status in Week 2, before any plan document is signed.

ACA employer mandate for seasonal crews

Construction companies with 50 or more full-time equivalent employees across all job sites under common ownership or control are applicable large employers subject to the ACA employer shared responsibility mandate. Seasonal headcount swings, common in residential and outdoor civil work, are handled through the ACA's look-back measurement method, which averages an employee's hours over a defined measurement period rather than judging eligibility off a single peak-season payroll. The §125 plan is fully compatible with ACA mandate compliance, and the minimum essential coverage in Benecor's benefit stack satisfies the individual mandate for enrolled employees.

Launching §125 for a construction company: 4 weeks

Construction §125 implementation runs four weeks from signed engagement to first pre-tax payroll for most contractors, extending to roughly five weeks for contractors with active job sites in three or more states.

1. Week 1: Benecor models your payroll segmented by trade classification, laborers and apprentices, journeyman tradesmen, foremen and superintendents, and office and estimating staff. Each segment is modeled at its correct federal bracket and state tax layer per job site. For any federally funded work, the DBRA fringe treatment is confirmed and documented as a separate track. You receive a signed savings projection by trade classification. You select your benefit menu: medical premiums, dental, vision, accident, critical illness, and dependent care FSA.
2. Week 2: ERISA counsel drafts the plan adoption agreement and summary plan description, addressing multi-state job sites and, where applicable, DBRA compliance language. Nondiscrimination test pass confirmation is included. You review and sign before the first pre-tax payroll.
3. Week 3: Enrollment rollout by trade classification. QR-code enrollment delivered at a toolbox talk or safety meeting for field crews, with a separate packet for office and estimating staff. Each packet shows the per-paycheck dollar savings at that classification's actual wage level. Most contractors see 65-85% enrollment within the first week.
4. Week 4: Election data transmitted to payroll. Deduction code configured as pre-tax for federal income tax, FICA, and applicable state income tax per job site. Certified payroll reporting (WH-347) is confirmed unaffected. Test payroll run confirms all tax layers are correctly reduced. First pre-tax payroll runs at the end of Week 4.