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Engineering & Professional Services Firms: Managed Payroll for Mid-Size Businesses (25-100 Employees) (2026)
Managed payroll for a mid-size engineering firm, 50 to 100 employees, is where FMLA and the ACA employer mandate have attached and the question becomes whether to hire the payroll clerk BLS prices at $58,260 or pay $3,375 a month at 75 employees. BEG: $45 per employee per month inside the payroll software you already use, live in 3 to 5 days.
What attached at 50 for an engineering firm
FMLA covers an engineering firm with 50 or more employees in 20 or more workweeks, with job-protected unpaid leave and benefits continued, so leave balances, intermittent hours and benefit deductions during leave all live in payroll. The ACA applicable large employer test counts full-time equivalents from payroll hours, and once it applies the 1094-C and 1095-C filings are built from the same data every year. For engineering firms with part-time engineers the FTE count is the number to watch, not the headcount.
Hire or outsource at 75 employees
BLS OEWS May 2025 puts the national median for payroll and timekeeping clerks at $58,260, roughly $75,738 loaded, for one person who also has to know prevailing wage for government projects, billable hour payroll allocation and PE license classification and who is a single point of failure on every pay date. Managed payroll at 75 employees is $3,375 a month, $40,500 a year, with the ACA and FMLA mechanics inside the price. The next federal lines, WARN notice and the EEO-1 report, wait at 100.
For every week in which Davis-Bacon covered work is performed, the contractor or subcontractor must submit a certified payroll with a signed Statement of Compliance to the contracting agency; the prime contractor is responsible for all subcontractor submissions, and certified payrolls and basic payroll records must be preserved for 3 years after all work on the prime contract is completed.
The rules behind this page, with sources
General information, not legal advice. Every rule below was read on the agency page linked next to it.
- For every week in which Davis-Bacon covered work is performed, the contractor or subcontractor must submit a certified payroll with a signed Statement of Compliance to the contracting agency; the prime contractor is responsible for all subcontractor submissions, and certified payrolls and basic payroll records must be preserved for 3 years after all work on the prime contract is completed. [29 CFR 5.5(a)(3)]
Read the full guide to managed payroll by company size, and the rest of the engineering firm payroll library.
Managed Payroll, Handled.
BEG manages payroll at $45 per employee per month, all-inclusive. Get an instant cost comparison for your business.
Frequently Asked Questions
What does managed payroll cost an engineering firm with 75 employees?
$3,375 a month at $45 per employee, all-inclusive, including the 1094-C and 1095-C build.
Is a mid-size engineering firm an applicable large employer?
If it averaged 50 or more full-time employees plus full-time equivalents in the prior year, yes, and the count comes from payroll hours.
What does the in-house alternative cost at this size?
$58,260 a year at the BLS OEWS May 2025 national median for a payroll and timekeeping clerk, before benefits, employer taxes and software.
What does managed payroll cost for an engineering firm?
$45 per employee per month, all-inclusive, inside the payroll software you already use, with no monthly minimum. Prevailing wage for government projects, billable hour payroll allocation and PE license classification are configured at setup, not billed as add-ons.
Related Resources
Anthony leads payroll solutions at Business Executive Group, a national managed payroll firm serving businesses across industries including Engineering & Professional Services Firms. BEG manages payroll at $45 PEPM, all-inclusive, with deep expertise in compliance, multi-state filing, and industry-specific payroll requirements. Get instant pricing at beghr.com.
Authoritative source: U.S. Department of Labor: Wage and Hour Division
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