1. How the work really happens
2. What a misclassification could cost
Result
Questions people ask
Is a worker a contractor if they signed a contractor agreement?
No. The label in the contract does not decide it. The IRS, the Department of Labor and state agencies look at how the relationship works in practice: who controls the work, who carries the financial risk, and whether the worker runs an independent business.
What is the ABC test?
Several states, including California, Massachusetts and New Jersey, presume a worker is an employee unless the hiring business shows three things: the worker is free from its control (A), the work is outside its usual course of business (B), and the worker is independently established in that trade (C). Failing any one prong makes the worker an employee for those laws.
What does misclassifying a worker cost?
Back payroll taxes, usually the employer share of Social Security and Medicare plus a share of the amounts that should have been withheld, unpaid overtime if hours went over 40 a week and sometimes an equal amount in liquidated damages, plus state taxes, interest and penalties. This tool estimates the federal tax and overtime pieces as a range.
Is this legal advice?
No. It is an illustrative screening checklist. Whether a particular worker is an employee depends on the facts and on the law of your state, so check the answer with an employment lawyer or a tax professional before you rely on it or change how you pay anyone.
What this does not cover
State-specific tests beyond ABC, industry carve-outs (for example the many statutory exemptions in California's AB 5), the IRS Voluntary Classification Settlement Program, the Section 530 safe harbor, state unemployment and workers' compensation, penalties and interest, the Social Security wage base, minimum wage and meal-break claims, and joint-employer questions. A lawyer or tax professional can tell you which of these apply to you.
Related tools: the employment contract checker, the freelance contract checker and the employee cost calculator, for what a reclassified worker costs on payroll.