Contractor classification: a plain-English guide

Classification is the part of contract staffing that everyone agrees is important and almost nobody can explain at the level of detail that would actually keep them out of trouble. Here is the plain version.

The three arrangements

The single most useful thing to understand is this: classification is determined by the working relationship, not by the paperwork. A contract that says “independent contractor” does not make someone one. If you direct how, when and where the work is done, supply the tools, and integrate the person into your team the way you would an employee, then a regulator looking at that arrangement will call it employment regardless of what the agreement is titled.

Control and independence are what the tests turn on. Everything below follows from that.

W2

The staffing firm employs the contractor. The firm withholds income tax, pays its share of employment taxes, carries workers’ compensation and general liability, and handles multi-state registration where the work happens. The client directs the work day to day, exactly as it would for an employee, and that is fine — because the person genuinely is an employee, just not the client’s.

This is the right answer for the large majority of technology contracts. It is also the arrangement where the client’s exposure is lowest, because the employment relationship sits with a party whose business is administering it.

C2C (corp-to-corp)

The contractor has their own incorporated entity, and that entity contracts with the staffing firm or the client. It is a business-to-business relationship, so there is no withholding and no employment tax on either side.

C2C is legitimate and common, particularly among experienced specialists. But it is not a way to turn an employment relationship into a commercial one by paperwork. The entity should carry its own insurance, and the engagement should look like a service being bought rather than a seat being filled. Verify the incorporation, the insurance certificates and the right to work — every time, not once.

1099

The contractor is an individual operating as a sole proprietor. No withholding, no benefits, and a 1099 form issued at year end.

This is the arrangement most likely to be challenged, because it is the one most often used to describe what is functionally an employee. For a long-term, full-time, client-directed technology role, 1099 is very rarely the correct classification, whatever both parties would prefer.

Where teams get it wrong

• Treating the label as the decision. Choosing “1099” because it is cheaper, then directing the work exactly as you would an employee’s. The label is the last thing a regulator looks at.
• Ignoring the state. Tests differ meaningfully between jurisdictions, and some states apply a much stricter standard than the federal one. The location that matters is where the work is performed, which for remote roles is not necessarily where anyone assumed.
• Converting without changing anything. Moving someone from agency W2 to direct 1099 at the same desk, same hours, same manager, same laptop. Nothing about the relationship changed, so nothing about the classification should have.
• Letting it drift. A three-month project-based engagement that has quietly run for two years, with the contractor now attending planning, carrying a pager and managing an intern, is not the arrangement that was signed.
• Skipping verification on C2C. No certificate of insurance, no proof of incorporation, no right-to-work check, because the entity “is a company”. If it is not verified, it is not a defence.

The practical protection is unglamorous: classify honestly at the start, document why, verify the paperwork, and re-examine any engagement that has extended well past its original scope. That review takes an afternoon. The alternative is a back-tax assessment with penalties attached.

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Not legal advice. Classification rules differ by state and change over time. Confirm any specific arrangement with employment counsel before relying on it.