Staffing Series Week 1: Employee vs. Independent Contractor – Why It Matters

Are Your Workers Classified Correctly?

For staffing agencies, worker classification is one of the most consequential tax compliance issues you face. The IRS applies a common law test that weighs behavioral control, financial control, and the nature of the working relationship to determine whether someone is an employee or an independent contractor. No single factor is decisive; the IRS looks at the full picture. Misclassifying a worker can result in back taxes, penalties, and interest, costs that compound quickly across multiple workers and multiple years if the arrangement is challenged in an audit.

Why Staffing Agencies Are at Higher Risk

Staffing agencies often place workers at client locations, where the client directs day-to-day tasks while the agency handles payroll and the contractual relationship. That split creates real ambiguity about who is actually controlling the work. It's worth stating plainly: a worker's location alone does not determine classification. An independent contractor can work full-time at a client site and still be properly classified, if the underlying relationship supports it.

Because staffing models create more of these relationships, and more variation across clients, agencies should treat classification as an ongoing review rather than a one-time decision made at onboarding. Regularly reviewing contracts, management practices, and payroll procedures against IRS guidelines is the best defense against a costly surprise.

Action Steps

• Review all independent contractor arrangements against the IRS's behavioral, financial, and relationship factors.
• Maintain written agreements and supporting documentation that reflect how the work actually happens.
• Conduct classification reviews at least annually, and whenever a placement's terms change.
• Consider filing Form SS-8 when a classification is genuinely unclear.

Bottom Line

Worker classification mistakes can be expensive, and they're largely avoidable. Taking a proactive, documented approach helps protect your staffing agency from audits and unexpected payroll tax liabilities.