What it means
Worker classification is the decision whether someone who works for you is an employee or an independent contractor. An employee goes on payroll: tax withheld, employer taxes paid, a W-2. A contractor invoices you and gets a 1099-NEC.
The IRS uses the common-law test: does the company have the right to direct and control how the work is done, not just the result? It weighs three kinds of evidence: behavioral control (instructions, training, hours), financial control (who supplies tools, who can make or lose money, whether they work for others) and the relationship itself (benefits, permanence, whether the work is core to the business). The contract's label is one fact among many.
States can be stricter. California's ABC test, in its Labor Code since AB 5 in 2019, presumes an employee unless the worker is free from your control, does work outside the usual course of your business, and runs an independent business of that kind. An engineer building your product fails the second prong on its own.
Federal wage-and-hour law has its own economic reality test. The Department of Labor stopped enforcing its 2024 rule in May 2025 and proposed a replacement on February 26, 2026; as of mid-October 2026 no final rule has been published.
If the IRS reclassifies a worker and the error wasn't intentional, Section 3509 sets reduced rates: income tax withholding at 1.5% of wages and 20% of the employee's FICA, doubled to 3% and 40% if no 1099 was filed, plus the full employer share. Intentional disregard loses those rates.
Unsure? Either side can ask the IRS on Form SS-8, which can take six months or more. A company that has consistently treated a group as contractors, filed their 1099s for three years and isn't under audit can use the Voluntary Classification Settlement Program: reclassify going forward and pay 10% of one year's employment tax at the reduced rates, with no interest or penalties.
Why it matters. Treat an employee as a contractor and the company can owe back payroll taxes, penalties and interest, plus state unemployment, benefits and overtime claims. Diligence asks for every contractor and what they do.
The entry, worked
An IRS exam finds that a developer paid $100,000 as a contractor last year, with a 1099-NEC filed, was an employee. The misclassification wasn't intentional.
| Account | Debit | Credit |
|---|---|---|
| Payroll tax expense — prior year | $10,680.00 | |
| Accrued payroll taxes | $10,680.00 | |
| Total | $10,680.00 | $10,680.00 |
Under the Section 3509 reduced rates: $1,500 of income tax withholding (1.5%), $1,530 of the employee's FICA (20% of 7.65%) and the full $7,650 employer share. FUTA, state taxes, penalties and interest come on top.
Common questions
Is a signed contractor agreement enough?
No. The IRS and the states look at how the work is actually done. A contract that says contractor is evidence, but control decides.
How does the Voluntary Classification Settlement Program work?
Form 8952, filed at least 120 days before the date you want to start treating the workers as employees. You pay 10% of the most recent year's employment tax liability, computed at the Section 3509 reduced rates.
Which state's test applies to a remote worker?
The state where the person works sets the test that applies to them. A remote worker in California is judged by California's ABC test even if the company is in Delaware.
Where it comes up
The glossary entries, founder guides and lessons on this site that use the term and link here.
- Contractor or employee? Classification for startupsContractor or employee depends on control, not the contract. The IRS test, state rules, 1099s, payroll registration and the cost of getting it wrong.Guide · 4 min
- Form 1099-NEC for startups: threshold, deadline, e-filingWho gets a 1099-NEC, the new $2,000 threshold, why a W-9 comes first, what goes on a 1099-K instead, and the deadlines, penalties and state copies.Guide · 7 min
- W-2 year end for startups: boxes, deadlines, correctionsThe W-2 boxes founders get wrong (box 1 vs 3 vs 5, box 12 codes), the W-3, the SSA deadline, state copies, and how to fix a mistake with a W-2c.Guide · 7 min
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General information for US companies, not tax, legal or accounting advice. Check the specifics with a CPA before you act on them.