In California’s medical aesthetics industry, few topics create more confusion—or risk—than how to properly classify injectors. Whether you’re a physician, nurse practitioner, or business owner, understanding the difference between an employee (W-2) and an independent contractor (1099) isn’t just a technicality—it’s the line between compliance and costly enforcement.
California’s strict ABC Test, reaffirmed by the landmark Dynamex Operations West, Inc. v. Superior Court decision (2018) 4 Cal.5th 903, reshaped how worker classification is determined across nearly every industry, including healthcare. And while some licensed professionals may still qualify as independent contractors, most injectors in medical spas do not.
This article explains how the ABC Test applies to injectors, what limited exceptions exist, and why “self-incorporation” arrangements—where practitioners form their own professional entities and contract with a med spa—live in a legal gray area.
The ABC Test: California’s Worker Classification Standard
The ABC Test was first articulated in Dynamex and later codified into law through Assembly Bill 5 (AB 5) and subsequent amendments. Under this test, a worker is presumed to be an employee unless the hiring entity can prove all three of the following:
A — Autonomy: The worker is free from the control and direction of the hiring entity in connection with performing the work.
B — Business: The worker performs work outside the usual course of the hiring entity’s business.
C — Custom: The worker is customarily engaged in an independently established trade, occupation, or business of the same nature as the work performed.
If the hiring business cannot satisfy all three prongs, the worker must be classified as an employee.
For medical spas and aesthetic practices, this test is particularly challenging—because injectors almost always fail prongs A and B.
Why Most Injectors Are Employees Under California Law
Injectors—such as Registered Nurses (RNs) and Physician Assistants (PAs)—operate under the supervision of a physician under California’s Medical Practice Act. They do not have independent clinical discretion; every injection they perform is technically under a doctor’s medical direction.
Because of that supervision requirement, they are rarely “free from control” (failing A) and are performing the very service—the injection of aesthetic medicine—that is the core business of the med spa (failing B).
In short: under the ABC Test, RNs and PAs should almost always be classified as employees rather than independent contractors. Misclassification can expose the practice to back wages, tax penalties, and liability from the Employment Development Department (EDD) and the Department of Industrial Relations.
The Dynamex Decision: Reinforcing the Presumption of Employment
In Dynamex, the California Supreme Court underscored that the purpose of the ABC Test is to protect workers and ensure employers contribute their fair share to employment taxes and benefits.
The ruling rejected the “flexibility” once enjoyed under older tests (like the Borello multifactor test) and made it far harder for businesses to claim independent contractor status.
Following Dynamex, the Legislature passed AB 5 (2019), which codified the ABC Test into the Labor Code, making it applicable to nearly all industries unless an exemption applies.
The Medical and Professional Services Exemptions
AB 5 and its successor, AB 2257, carve out limited exemptions for certain licensed professionals. Specifically, physicians, surgeons, dentists, podiatrists, psychologists, and veterinarians are exempt from the ABC Test and instead evaluated under the older Borello standard.
That means physicians can still be classified as 1099 independent contractors in some arrangements, such as acting as medical directors or locum tenens providers.
However, nurses are not included in that exemption. Registered Nurses, Licensed Vocational Nurses, and Physician Assistants remain subject to the ABC Test, which makes it exceedingly difficult to classify them as independent contractors unless they are truly operating independently—which is rare.
The Narrow Exception for Nurse Practitioners
There is a limited exception for certain “104 nurse practitioners”—those who qualify under California’s Business and Professions Code §2837.103 to practice independently without physician supervision.
A nurse practitioner who holds an active 104 certification and operates their own independent practice may satisfy prongs A and C of the ABC Test, provided they also perform services outside the usual course of the hiring entity’s business.
However, this remains a case-by-case analysis. Most NPs working inside a med spa’s clinical environment are performing the core service of the business and therefore fail prong B, even if they are technically independent practitioners.
The “Self-Incorporation” Workaround: Legal or Grey Area?
Many med spas and aesthetic practices attempt to navigate this issue by having injectors form their own professional corporations or professional nursing corporations, which then contract with the medical spa as a 1099 vendor.
On paper, this arrangement converts the relationship from individual-to-business into business-to-business (B2B), which may qualify for the “business-to-business exemption” under Labor Code §2776.
For the business-to-business exemption to apply, the injector’s professional corporation must meet all 12 conditions under Labor Code § 2776, including:
Operates free from the control and direction of the hiring entity;
Maintains a business location separate from the med spa;
Has a written contract specifying payment terms;
Is customarily engaged in an independent business of the same nature and regularly advertises or offers similar services to the public or other businesses; and
Provides its services to the med spa directly under its own name, not to the spa’s patients or customers.
If any one of these conditions is not met, the exemption fails—and the injector is once again presumed to be an employee.
In practice, most “self-incorporation” models do not satisfy these requirements because the injector performs work solely for one practice, under direct physician supervision, and using the practice’s facilities and supplies.
EDD and Tax Considerations
From a tax and payroll perspective, the California Employment Development Department (EDD) closely scrutinizes med spas that pay injectors as 1099 contractors.
If the EDD determines that the injectors were misclassified, the business may be liable for:
Back payroll taxes (unemployment, disability, and workers’ compensation contributions)
Penalties and interest
Potential personal liability for corporate officers
Even if the “self-incorporation” model has been blessed by accountants or appears to satisfy IRS guidelines, the EDD often applies a stricter interpretation under state law.
In short: it’s a grey area with a red flag. The more control the practice exerts over the injector’s schedule, tools, and supervision, the more likely the EDD will find an employment relationship.
Best Practices for Compliance
To minimize risk and stay compliant:
Classify injectors as employees (W-2) unless there is a clear and defensible exemption.
If using a self-incorporation model, ensure the practitioner’s corporation operates independently—maintaining its own office, insurance, and client base.
Use well-drafted contracts that reflect reality, not just intent.
Consult healthcare counsel before classifying any injector as a 1099 contractor.
The Bottom Line
California’s ABC Test has made true independent contractor classification rare—especially in healthcare. Physicians may still qualify under statutory exemption, but most nurses and injectors do not.
While “self-incorporation” offers a tempting workaround, it sits on unstable ground unless the facts clearly support independence. For most med spas, compliance—and peace of mind—come from treating injectors as employees and focusing on building a thriving, lawful practice.
