HR Glossary | HR Cloud | 3 minute read

ABC Test (Worker Classification)

The ABC test is a three-part legal standard, used by a growing number of states, for deciding whether a worker is genuinely an independent contractor or legally an employee.

Unlike the federal common-law test, the ABC test starts from a presumption that a worker is an employee, and it's the business's burden to prove all three conditions are met to classify them as a contractor instead.

What Are the Three Prongs of the ABC Test?

Prong	What It Requires
A	The worker is free from the company's control and direction in performing the work
B	The work performed is outside the company's usual course of business
C	The worker is customarily engaged in an independently established trade or business of that same nature

Why Is Prong B So Often the Hardest to Meet?

Prong B asks whether the work is outside the company's usual business, which is a difficult bar for many common contractor arrangements to clear.

A software company hiring a contract developer, for example, may struggle to argue that development work is outside its usual course of business, even if every other factor, tracked through time and attendance data and project records, points toward genuine independence.

Which States Use the ABC Test?

California, New Jersey, Massachusetts, and several other states apply some version of the ABC test, though the exact wording and which laws it applies to (wage law, unemployment insurance, or both) varies by state.

Because the specifics differ, employers operating across multiple states need to check each state's version rather than assuming one state's standard applies everywhere, a distinction Forbes has covered as multi-state employers increasingly hire remote contract talent.

How Should Employers Apply the ABC Test in Practice?

SHRM has flagged the ABC test as one of the biggest compliance shifts in worker classification in recent years, since it's meaningfully stricter than what many businesses are used to.

Tracking which state each contractor works from inside a single HRIS helps flag exactly which relationships need ABC-test-specific review.

Start from the assumption that a worker is an employee unless all three prongs are clearly satisfied, and reflect that status accurately in employee self-service records
Pay particular attention to Prong B, since it eliminates many arrangements that would pass a looser test
Review contractor relationships state by state, not with a single national policy
Get legal review before classifying anyone as a contractor in an ABC-test state

How Does the ABC Test Relate to Worker Misclassification?

A worker properly classified as a contractor under the federal common-law test can still fail the ABC test in a state that uses it, which is a common source of unintentional misclassification for multi-state employers.

Building this check into onboarding for every new contractor engagement, rather than relying on a one-time policy set years ago, keeps classification decisions current as law changes.

This connects closely to other terms in HR Cloud's HR glossary, especially worker misclassification and independent contractor vs employee.

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Frequently Asked Questions

Q: Does the ABC test apply nationwide?

A: No. It only applies in states that have specifically adopted it, and even within those states, it may apply to some laws (like unemployment insurance) but not others.

Q: Can a worker pass the federal test but fail the ABC test?

A: Yes, this is common. The ABC test is generally stricter, so a classification that's defensible federally can still fail in an ABC-test state.

Q: What happens if a worker fails the ABC test?

A: They're presumed to be an employee under that state's law, which means the employer owes payroll taxes, benefits eligibility, and wage-and-hour protections retroactively if misclassified.

Q: Is Prong A about physical supervision only?

A: No, it covers both actual control and the contractual right to control the work, even if that control isn't exercised in practice.

Q: Do gig economy platforms have special ABC test rules?

A: Some states have passed specific carve-outs or separate legislation for gig platform workers, so this area should be checked separately from general contractor classification.