St. Petersburg's civil and structural engineering sector anchors Pinellas County's infrastructure development, serving projects ranging from coastal resilience work and stormwater systems to commercial high-rises and institutional facilities. Established firms like George F. Young — one of Florida's longest-running engineering and surveying companies — and Advanced Engineering Consultants LLC operate here alongside newer entrants drawn by the Tampa Bay metro's strong construction pipeline. For the principals and HR managers at these firms, the ACA employer mandate is a recurring compliance question: does our firm have to offer health coverage to our engineers and project staff? This guide answers that question directly, with specific attention to how project-based staffing affects the FTE count that triggers the mandate.
The ACA's employer mandate requires Applicable Large Employers (ALEs) to offer minimum essential, affordable health coverage to full-time employees or face IRS penalties. The trigger for ALE status is averaging 50 or more full-time equivalent employees over the prior calendar year. Whether a St. Petersburg civil/structural engineering firm is an ALE depends entirely on this calculation — not on gross revenue, payroll amount, or number of PE-licensed staff.
Full-time employee under the ACA means an employee averaging 30 or more hours of service per week, or 130 hours in a calendar month. This is not the standard 40-hour employment definition. A St. Petersburg structural engineer who works a 32-hour week is full-time for ACA purposes even if your firm's employee handbook classifies anyone under 40 hours as part-time.
The FTE calculation must be run for each calendar month of the prior year, then averaged:
Step 1: Count all employees who averaged 30+ hours/week in that month. These are full-time employees for that month.
Step 2: For all employees who did NOT average 30 hours/week in that month, total all of their hours of service and divide by 120. This is the part-time FTE count for that month.
Step 3: Add the full-time employee count and the part-time FTE count for each month.
Step 4: Sum all 12 monthly results and divide by 12. If the result is 50 or more, your firm is an ALE for the following year.
| Scenario | Full-Time Employees | Part-Time FTE Equivalent | Total FTE | ALE Status |
|---|---|---|---|---|
| Small boutique firm | 12 | 5 | 17 | Not ALE |
| Mid-size firm with project staff | 35 | 18 | 53 | ALE — mandate applies |
| Large multi-discipline firm | 60 | 10 | 70 | ALE — mandate applies |
Civil and structural engineering firms in St. Petersburg commonly use project-based staffing — bringing on additional engineers, drafters, and project coordinators for specific infrastructure, stormwater, or commercial construction contracts. These variable-hour employees count toward both the FTE calculation and, if they cross the 30-hour threshold, may be entitled to coverage as full-time employees.
For employees whose hours vary significantly by project phase, the IRS look-back measurement period (3–12 months) allows firms to determine average weekly hours before committing to a coverage determination. St. Petersburg engineering firms should track actual hours for all employees — not just billable hours — to support accurate ACA classification.
ALEs must offer coverage meeting two standards to avoid penalties:
Minimum Essential Coverage (MEC): The plan must be minimum essential coverage — meaning any employer-sponsored group health plan generally qualifies. A plan that provides only dental, vision, or limited benefit coverage does not meet this standard.
Minimum Value: The plan must cover at least 60% of the cost of covered services (essentially a bronze-level plan or better).
Affordability: The employee's share of the lowest-cost self-only premium cannot exceed 9.02% of the employee's W-2 Box 1 wages (2026 W-2 safe harbor). For a civil engineer earning $80,000/year in St. Petersburg, the affordable monthly premium cap is approximately $601/month.
Not running the FTE calculation annually. George F. Young and similar established St. Petersburg firms that have been in practice for decades may have grown gradually to ALE status without triggering a benefits review. Run the FTE calculation every January for the prior year — it is the only way to know your current ALE status.
Counting only PE-licensed engineers in the FTE calculation. The ACA FTE count includes all employees — not just licensed engineers. Administrative staff, surveyors, CAD technicians, GIS specialists, and project coordinators all count. A St. Petersburg engineering firm with 25 PEs and 30 support staff may be well above the 50-FTE threshold.
Relying on 1099 contractor status to avoid mandate compliance. St. Petersburg engineering firms that classify field engineers or project-specific structural staff as independent contractors to avoid ACA obligations face IRS common-law test scrutiny. Misclassified contractors create ACA exposure retroactively — back to the year of misclassification.
Offering coverage that is not affordable for lower-wage employees. Civil engineering firms often have wide salary ranges — from senior PEs to entry-level drafters. A premium contribution structure affordable for a $90,000 PE may not be affordable for a $42,000 CAD technician. Verify affordability across your full wage spectrum, not just for senior staff.
St. Petersburg civil/structural engineering firms that are ALEs must offer compliant group coverage. Options for the coverage vehicle include:
Fully insured group plan: Traditional small or large group insurance purchased through a Florida carrier. Most St. Petersburg engineering firms in the ALE range (50–200 employees) use fully insured plans.
ICHRA for ALEs: ALEs can satisfy the ACA employer mandate for full-time employees by offering a sufficiently generous ICHRA that makes affordable individual coverage available. Employees source their own plans; the firm reimburses premiums. This approach gives St. Petersburg firms maximum flexibility in benefits administration. See our Florida health coverage guide for context on marketplace plan options.
Non-ALE firms (under 50 FTEs) can use QSEHRA (reimbursement up to $6,350/year self-only, $12,800 family for 2026) or any group plan structure they choose. See our HR Compliance hub for additional guidance.
Whether you're an ALE navigating mandate compliance or a growing firm approaching the 50-FTE threshold, get a free consultation tailored to your St. Petersburg engineering practice.
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