US Worker Classification Guide: Employee or Independent Contractor?

Worker misclassification occurs when an employer categorizes a worker as an independent contractor when, based on the actual work relationship, the worker should be classified as an employee. This matters because employees are entitled to legal protections and benefits — including minimum wage, overtime pay, and social security contributions — that independent contractors are not.

When an employer misclassifies an employee, they may be held liable for employment taxes for that worker, including income taxes, social security and Medicare taxes, and unemployment taxes that should have been withheld. Penalties increase significantly if the IRS determines the misclassification was intentional.

The IRS 3 Factor Test assesses worker classification across three categories: behavioral control, financial control, and type of relationship. Behavioral control examines whether the company controls how the work is performed — including hours, location, and methods. Financial control looks at how the worker is paid, whether they can realize opportunity for profit or loss, and whether they invest in their own tools and equipment.

The type of relationship factor considers whether there are written contracts, whether the worker receives employee-type benefits, and how integral the work performed is to the company's core business activities. No single factor is decisive — determining whether a worker is an employee or an independent contractor requires looking at the totality of the work relationship.

The ABC Test is used to determine worker status under the Fair Labor Standards Act (FLSA) and by a number of individual states, including California, Massachusetts, and New Jersey. Under this test, a worker has independent contractor status only if all three conditions are met: the hiring entity does not control or direct the worker; the work performed is outside the usual course or location of the company's core business activities; and the worker is customarily engaged in an independently established trade or business.

Not all states apply this test, and those that do may interpret it differently. In May 2025, the DOL also announced it would pause enforcement of its 2024 independent contractor rule under the FLSA, returning to earlier economic reality principles — making it important to stay current with federal and state-level classification guidance.

The Voluntary Classification Settlement Program (VCSP) is an optional IRS programme that allows eligible employers to reclassify misclassified workers as employees for future employment tax purposes in exchange for partial relief from federal employment taxes for prior years of misclassification.

To qualify for the classification settlement program, employers must have consistently treated the workers as independent contractors, have filed all required Form 1099s, and not be currently under an employment tax audit. Participating employers enter into a closing agreement with the IRS and agree to treat the reclassified workers as employees going forward.

If you've worked through the available tests and are still unsure whether a worker is an employee or an independent contractor, you can file IRS Form SS-8 to request an official determination of worker status for federal employment tax purposes. Either the business or the worker can file this form.

Be aware that the process typically takes at least six months, so it may not be practical for immediate hiring decisions. Deel's AI-powered Worker Classifier offers a faster alternative — using award-winning research into employment court cases to classify workers with over 90% accuracy, aligned with local labor law and current IRS guidance.

Deel offers three flexible engagement models for US hiring. Self-serve contractor management gives companies the tools to generate compliant contracts, run classification assessments, and manage payments in one platform. Deel's Contractor of Record service classifies and hires the contractor on your behalf, assuming full liability in the event of a misclassification claim. And where a role is better suited to full employment, Deel's EOR solution enables compliant hiring of full-time employees in the US without needing a local entity.