Staffing Industry M&A: Why Gross Margin Hides the Real Story
Most of what a staffing company bills isn't its own profit — it's wages, taxes, and insurance meant to pass straight through to the worker and the government. A USD 90 million fraud case shows how a compliance gap can hide behind years of clean-looking books, and what buyers need to check before it becomes their liability.
The staffing industry is made up of companies that hire workers and place them at other businesses on a temporary or contract basis — think of firms that supply warehouse staff, nurses, or office workers to a client company. Because the staffing firm, not the client, handles payroll and taxes for these workers, a hidden compliance gap can be easy for a buyer to miss. In November 2025, Californian prosecutors charged the owner of a group of staffing companies with a USD 90 million tax fraud. For over a decade, the companies told clients they were paying payroll taxes and workers' comp insurance on every worker placed. They weren't — federal taxes were underpaid by over USD 44 million between 2020 and 2025 alone. This shows a problem that comes up in every staffing company sale: most of what a staffing company bills isn't its own profit. It's wages, taxes, and insurance meant to pass straight through to the worker and the government. If a company quietly stops paying its share to the government, its books can look fine for years.
Where the Risk Hides
A staffing company's bill rate covers the worker's pay, plus payroll taxes and insurance, plus a small margin for the company. Because most of it passes straight through, even giant staffing firms run thin profits. ManpowerGroup billed about USD 4.5 billion in a single quarter in early 2026, yet its gross margin was only around 17%, and its operating margin was under 2%. Most staffing deals work on "co-employment": the staffing company is the official employer, handling payroll and insurance, while the client just directs the day-to-day work. If the staffing company cuts corners on taxes or insurance, that liability sits with it, and can surface long after a buyer has taken over. That's exactly what the California case shows: clients believed their vendor was compliant for years before anyone found out otherwise.
What a Basic Review Can Miss
• Proof that payroll taxes and workers' comp were actually paid, not just claimed. • How workers are classified, and any liability that could carry over to a new owner. • Whether "one-time" profit add-backs are really one-time, or hiding an ongoing shortfall.
MARC's View
Staffing runs on high volume and thin margins, so a small tax or insurance gap doesn't stay small. It builds up quietly until it becomes a liability bigger than the profit the business ever made. A standard profit-and-loss review isn't enough on its own — it doesn't confirm the taxes and insurance behind those numbers were actually paid. A dedicated Quality of Earnings analysis is what closes that gap.
Where MARC Comes In
• Verifying payroll tax and workers' comp filings against official records. • Reviewing worker classification and flagging liability that could transfer to a new owner. • Reviewing and validating the EBITDA add-backs to derive real profitability. Speak with MARC's advisory team before your next staffing acquisition closes.
Key Takeaway
About MARC Research Team
Our research team comprises experienced financial analysts and consultants with over 50+ years of combined experience.
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MARC verifies payroll tax compliance, worker classification, and EBITDA add-backs before you close on a staffing company.
