California's ABC Test: Contractor or Employee?

Key Takeaways

• California uses the ABC test (AB5) to determine worker classification. It's stricter than the IRS test, all three factors must be met to classify someone as a contractor, and the burden of proof falls on the business.
• If you misclassify a worker, you owe back payroll taxes, unemployment insurance, workers' comp, and potentially unpaid benefits and overtime.
• Penalties come from three agencies at once: the IRS, California's EDD, and the FTB. They stack.
• Fixing a misclassification proactively is significantly cheaper than being caught.

This Mistake Can Close Your Business

Worker misclassification sounds like a paperwork issue. It's not. In California, it's one of the most expensive mistakes a business owner can make.

When you classify a worker as an independent contractor instead of an employee, you skip payroll taxes, workers' comp, unemployment insurance, overtime rules, and benefits. That saves you 20-30% per worker. Which is exactly why California's Employment Development Department (EDD) and the IRS look for it aggressively.

If you're wrong about the classification, you don't just owe what you should have paid. You owe that plus penalties, plus interest, plus potential lawsuits from the workers themselves. For a business with five misclassified workers over two years, the total exposure can reach six figures.

California's ABC Test vs. the IRS Test

California and the IRS use different tests to determine whether someone is a contractor or employee.

Assembly Bill 5 (AB5) is a California law signed in 2019 that established the ABC test as the official standard for worker classification in the state. Before AB5, California courts used a more flexible common law test similar to the federal IRS test. AB5 replaced that with a stricter, three-factor standard: the ABC test. Businesses must use it to determine whether a worker is an employee or an independent contractor. All three factors have to be met to classify someone as a contractor. If any one fails, the worker is an employee under California law.

The IRS Test (Common Law): Looks at three categories: behavioral control (do you control how the work is done?), financial control (do you control the business aspects of the work?), and relationship type (is there a written contract, benefits, permanency?). It's a balancing test with no single deciding factor.

California's ABC Test (AB5): Presumes the worker is an employee. To classify them as a contractor, you must prove ALL THREE of the following:

• A. The worker is free from the control and direction of the hiring entity in performing the work, both under the contract and in fact.
• B. The worker performs work that is outside the usual course of the hiring entity's business.
• C. The worker is customarily engaged in an independently established trade, occupation, or business of the same nature as the work performed.

There are narrow exemptions for specific professions (licensed professionals, certain creatives, business-to-business relationships), but they have their own qualifying criteria. Don't assume the worker qualifies without checking.

Example: A $47,000 Lesson

David owns a small construction company in Fresno with eight workers, all classified as independent contractors. He paid them hourly, provided tools, set their schedules, and directed their work. He issued 1099s instead of W-2s because that's what the previous owner did.

An EDD audit reclassified all eight workers as employees, with a total assessment of nearly $47,000.

That doesn't include the workers' comp exposure. If any of those workers had been injured on the job during the misclassification period, David would have been personally liable.

The Core Mistake

Classifying workers based on what's convenient (1099 is cheaper) instead of what's legally correct under the ABC test.

What's Different in California

California is the strictest state in the country for worker classification. The ABC test under AB5 flipped the presumption: everyone is an employee unless you can prove otherwise. Most states still use the more flexible IRS-style common law test.

California-specific consequences include:

EDD penalties: California's Employment Development Department assesses back state payroll taxes, unemployment insurance, and state disability insurance, plus penalties of up to 15% of the amount owed.

Labor Code violations: Misclassified workers can file claims for unpaid overtime, meal and rest break violations, unreimbursed business expenses, and other protections they would have had as employees.

FTB reporting: The FTB can assess additional penalties for failing to withhold California income tax from employees.

DLSE enforcement: The Division of Labor Standards Enforcement can issue penalties of $5,000 to $25,000 per violation for willful misclassification.

Private lawsuits: Workers can sue individually or as a class. California's Private Attorneys General Act (PAGA) allows workers to bring actions on behalf of the state, with penalties that add up fast.

What to Do About It

One of the most common questions we get from new clients is straightforward: Should I bring this person on as a contractor or an employee?  The answer starts with two tests. The IRS has guidance on its common law test at irs.gov, and California's ABC test resources are at edd.ca.gov, and we'll walk you through both. If the answer still isn't clear, or the situation involves contracts, liability, or workplace policies, that's when we refer you to an HR specialist or employment attorney. Our lane is payroll and tax setup; the legal layer needs a different expert.

1. Start by running each contractor through both tests: the IRS common law test and California's ABC test. The IRS has guidance at irs.gov, and the EDD has AB5 resources at edd.ca.gov. Pay close attention to Part B, if the worker is doing the same type of work your business does, they likely don't pass.
2. If a worker doesn't pass, payroll setup is the next step. We can help you get that in place, withholding, quarterly filings, and W-2s at year end instead of 1099s. For workers' comp and California wage and hour compliance, an employment attorney or HR specialist is the right call.
3. Consult a CPA and an employment attorney before making changes. The transition has tax implications and legal considerations that vary by situation.
4. File any corrected forms. If you issued 1099-NECs that should have been W-2s, your CPA will help you file corrected returns and amended payroll tax forms

Why It Matters

Misclassification isn't a gray area in California. The ABC test is clear, the penalties are steep, and enforcement is active. The EDD collects over $100 million per year in misclassification assessments. If your classification doesn't hold up, the cost of correcting it voluntarily is a fraction of what it costs when an agency finds it first.

Next Step

If you're not sure whether your contractors pass the ABC test, or you know they don't and need a plan, talk to NCO. If workers need to move to payroll, that's where we come in. We'll get payroll set up correctly and make sure your 1099s and W-2s are handled at year end. For the legal and compliance piece, we'll point you to the right employment attorney.