California Independent Contractor Rules: AB5 Compliance Guide

Disclaimer: This guide is for informational purposes only and does not constitute legal or tax advice. California's AB5 law is complex and fact-specific. Consult a qualified California employment attorney or CPA before making worker classification decisions.

California's AB5 law reshaped how businesses classify workers. Getting it wrong is expensive. Misclassifying an employee as an independent contractor in California can trigger back taxes, penalties, benefit liability, and class-action lawsuits. This guide breaks down exactly what AB5 requires, who is exempt, and what steps your business needs to take to stay compliant.

What Is AB5? The Short Version

Assembly Bill 5 (AB5) was signed into law by Governor Gavin Newsom on September 18, 2019, and took effect January 1, 2020. The law codified and expanded a California Supreme Court ruling (Dynamex Operations West, Inc. v. Superior Court, 2018) that established the "ABC test" for worker classification.

The core effect: AB5 made it significantly harder for California businesses to classify workers as independent contractors rather than employees. Under prior law, businesses had more flexibility. Under AB5 California rules, the default assumption is that a worker is an employee unless the hiring business proves otherwise using a three-part test.

In 2021, AB5 was amended by AB2257, which added new exemptions and clarified several professional categories. When people refer to "AB5" today, they generally mean the law as amended by AB2257.

The ABC Test: How California Classifies Workers

Under AB5, a worker is legally considered an employee unless the hiring entity can satisfy all three parts of the ABC test:

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

All three parts must be satisfied. Failing even one means the worker must be classified as an employee under California law.

Where Most Businesses Fail: Part B

Part B is where most misclassification issues arise. If a graphic design agency hires a freelance graphic designer, that designer is performing work that is the usual course of the agency's business. Part B fails. The designer would legally be an employee. Contrast that with a plumber hired by a clothing retailer to fix a pipe. That work is clearly outside the retailer's usual business, so Part B is satisfied.

Who Is Exempt from AB5? Key Exceptions

AB5 and AB2257 include a significant number of occupational and business-relationship exemptions. These workers are not evaluated under the ABC test. Instead, they're classified using the older, more flexible Borello multifactor test.

Professional and Occupational Exemptions

The following categories may qualify for the Borello test exemption, provided certain conditions are met (such as having a business license, maintaining their own business location, or setting their own rates):

Licensed physicians, surgeons, dentists, podiatrists, psychologists, and veterinarians
Licensed lawyers, architects, engineers, private investigators, and accountants
Securities broker-dealers and investment advisers
Direct sales salespersons
Commercial fishermen (with a sunset provision. Check current status.)
Freelance writers, editors, photographers, and fine artists (with a 35-submission cap per client per year. See below.)
Licensed cosmetologists, barbers, estheticians, electrologists, and manicurists
Tutors who teach students through their own tutoring business
Real estate licensees
Insurance agents
Graphic designers, grant writers, and others in certain "referral agency" arrangements

The Business-to-Business (B2B) Exemption

A contractor working as a separate business entity (rather than as an individual) may qualify for the B2B exemption if all of the following conditions are met:

The contractor is free from control and direction of the contracting business
The contractor is providing services directly to the contracting business, not to customers of that business
The contractor has a written contract
The contractor has their own business location (can be a home office)
The contractor is customarily engaged with other clients
The contractor holds required business licenses and tax registrations
The contractor has the ability to subcontract or hire their own employees
The contractor sets or negotiates their own rates
The contractor can work for other businesses at the same time
The contractor provides tools and equipment (where applicable)
The contractor performs the same or similar work for other clients
The contractor is customarily recognized as an independent business

This is a strict test. The California Labor Commissioner scrutinizes B2B arrangements closely.

The Freelancer 35-Submission Cap

Writers, photographers, editors, and similar creative professionals who submit content to a single client are capped at 35 submissions per year before the exemption no longer applies (for that client). Exceeding 35 submissions triggers employee classification requirements. This is a critical detail for media companies and content-heavy businesses.

Proposition 22: The App-Based Worker Carve-Out

In November 2020, California voters passed Proposition 22, which created a separate classification for app-based rideshare and delivery workers (think Uber, Lyft, DoorDash, Instacart). These workers are classified as independent contractors but must receive certain minimum earnings guarantees, expense reimbursements, and healthcare subsidies.

Prop 22 applies specifically to "app-based transportation and delivery companies." If your business doesn't fall into that category, Prop 22 does not help you. AB5 still applies in full.

Penalties for Misclassification Under California Contractor Law AB5

California takes worker misclassification seriously. Here's what's at stake if you get it wrong:

Penalty Type	Amount / Consequence
EDD (Employment Development Department) back payroll taxes	State unemployment insurance, SDI, and employer contributions. Plus interest.
Labor Commissioner civil penalties	$5,000–$25,000 per violation for willful misclassification
Failure to provide wage statements	Up to $4,000 per employee
Failure to provide rest/meal breaks	One hour of pay per violation, per day
Workers' comp violations	Stop-work orders, fines, and criminal exposure
PAGA lawsuits	Civil penalties aggregated across all affected workers. Often six or seven figures.

California's Private Attorneys General Act (PAGA) is particularly dangerous. It allows workers and their attorneys to sue on behalf of the state and collect a portion of civil penalties. Many AB5 enforcement actions come through PAGA, not government audits.

AB5 Compliance Steps for California Businesses

If you're currently using independent contractors in California, here's a practical compliance checklist:

Step 1: Audit Your Current Worker Relationships

List every worker currently classified as an independent contractor. For each one, apply the ABC test. Be honest. If your company couldn't survive this analysis in front of the California Labor Commissioner, you have exposure.

Step 2: Determine Whether an Exemption Applies

Check whether each worker falls into an exempt occupational category or whether the B2B exemption applies. Document your reasoning in writing. If there's any question, get a legal opinion before you proceed.

Step 3: Restructure or Reclassify

Workers who don't pass the ABC test and don't qualify for an exemption need to be reclassified as employees. That means:

Registering with California EDD as an employer (if you haven't already) at edd.ca.gov
Withholding payroll taxes (state income tax, SDI)
Paying employer-side taxes (UI, ETT)
Providing workers' compensation insurance
Complying with California wage and hour law (minimum wage, overtime, breaks)
Providing required notices and wage statements

Step 4: Update Contracts for Remaining Contractors

For workers who legitimately qualify as independent contractors, update your contracts to clearly reflect the exemption criteria. For the B2B exemption, the written contract is a legal requirement, not optional.

Contracts should explicitly state:

The contractor controls how work is performed
The contractor is engaged in an independent business
The contractor works for other clients
The contractor provides their own tools and equipment
The relationship reflects actual working conditions (not just paper terms)

Step 5: Maintain Documentation

Keep copies of all contractor agreements, invoices, evidence of the contractor's independent business (their business license, other client relationships, their own marketing materials), and any other documentation supporting the classification. If you're ever audited, this paper trail is your defense.

Forming the Right Business Structure Matters Too

Many independent contractors in California operate as sole proprietors, which leaves them with unlimited personal liability and zero separation between personal and business assets. If you're a contractor working in California, forming an LLC or S-Corp can strengthen your B2B exemption claim (by demonstrating you have an independently established business) and protect your personal assets at the same time.

A properly formed California LLC establishes you as a legitimate business entity, not just a worker with a 1099. This is one of the practical reasons many contractors choose to incorporate. For details on how to set up the right structure, see our guide to how to start an LLC in California.

Key Official Resources

California Labor Commissioner (DLSE): dir.ca.gov/dlse, Publishes AB5 FAQs and enforcement guidance
California EDD Employer Registration: edd.ca.gov
AB2257 Legislative Text: leginfo.legislature.ca.gov, Search AB2257 for the full exemption list
California Secretary of State (Business Filings): sos.ca.gov/business-programs

Bottom Line: AB5 Is Not Optional

California enforces AB5 actively, and the penalties for getting it wrong are significant. The law is not ambiguous in its intent: California defaults to employee status, and the burden of proving a worker is a legitimate independent contractor falls on the hiring business, not the worker.

If you're currently using contractors in California without having done a formal classification audit, that's a gap you need to close. The practical steps aren't complicated. The legal analysis is where things get nuanced, and that's exactly where a qualified California employment attorney earns their fee.

For businesses still in the formation stage, choosing the right legal structure from the start and understanding how California contractor law AB5 applies to your specific business model can save significant time, money, and legal exposure down the road.

Professional Advice Reminder: This guide provides general information about California AB5 requirements. Worker classification decisions are highly fact-specific and can have significant legal and financial consequences. Always consult a licensed California employment attorney or CPA before making classification decisions for your workers.