Summary. Calling a worker an independent contractor does not make them one. Whether a worker is an employee is decided by tests that differ by statute, by agency, and by state, which means the same person can be a contractor for one purpose and an employee for another, at the same time, doing the same work. This article explains each test that matters: the economic reality test under the Fair Labor Standards Act and the Department of Labor rule restating it, the common law control test the IRS applies, the common law agency test adopted in Darden, the ABC test applied in California, Massachusetts, New Jersey, and other states, and the National Labor Relations Board's shifting standard. It explains what each asks, where they diverge, and which facts move the analysis. It then covers the consequences of getting it wrong, which extend well beyond back wages, and the Section 530 safe harbor that can eliminate federal tax liability entirely. It closes with a classification audit, a worked example, an FAQ, and related reading.

A software company engages fifteen developers as contractors. They work full time, use company laptops, attend daily standups, follow the company's sprint process, report to a company engineering manager, and have done so for three years. Each signed an agreement titled "Independent Contractor Agreement" that says, in bold, that they are not employees.

That document is worth approximately nothing.

Worker classification is decided by what the relationship is, not by what the parties call it. Courts and agencies say this in almost identical language across every test: the label is not determinative, and an agreement cannot waive statutory rights. The Fair Labor Standards Act's coverage cannot be contracted away, and a worker's signature on a contractor agreement does not change their status any more than it would change their age.

The good news is that classification is analyzable, the factors are known, and most misclassification is fixable before anyone complains.

The short answer

There is no single test. Which test applies depends on which law is at issue:

Purpose Test Source
Minimum wage and overtime Economic reality (multifactor) FLSA; 29 C.F.R. Part 795
Federal employment taxes Common law control IRC; Rev. Rul. 87-41
ERISA, Title VII, ADEA, ADA, FMLA Common law agency Nationwide Mutual Insurance Co. v. Darden, 503 U.S. 318 (1992)
Copyright work made for hire Common law agency (Reid factors) Community for Creative Non-Violence v. Reid, 490 U.S. 730 (1989)
Union organizing and unfair labor practices Common law agency with entrepreneurial opportunity as a factor NLRB decisional law
State wage and hour, in many states ABC test State statutes and case law
Unemployment insurance and workers' compensation Varies by state; often ABC or a state-specific test State statutes

The practical consequence: a worker can be a contractor under the IRS test and an employee under California's ABC test, at the same time. Compliance requires analyzing under each applicable regime, not picking the most favorable one.

Part I: The FLSA economic reality test

The standard

The FLSA defines "employ" to include "to suffer or permit to work," 29 U.S.C. § 203(g), which the Supreme Court has described as broader than the common law agency test. The question is whether, as a matter of economic reality, the worker is economically dependent on the employer for work or is in business for themselves.

Rutherford Food Corp. v. McComb, 331 U.S. 722 (1947), is the foundational case. Meat boners at a slaughterhouse worked under a contract designating them as independent contractors, using their own tools, paid by the hundredweight. The Court held they were employees, looking to the "circumstances of the whole activity" rather than to isolated factors or to the contract's label.

The factors

The Department of Labor's rule at 29 C.F.R. Part 795, adopted in 2024, restates the totality-of-the-circumstances economic reality test with six non-exhaustive factors, none of which has predetermined weight:

  1. Opportunity for profit or loss depending on managerial skill. Can the worker meaningfully affect their earnings through decisions about pricing, marketing, hiring, and accepting or declining work? Merely working more hours is not managerial skill.
  2. Investments by the worker and the potential employer. Capital or entrepreneurial investments that support an independent business, considered on a relative basis rather than by dollar comparison.
  3. Degree of permanence of the work relationship. Indefinite, continuous, or exclusive relationships suggest employee status; definite-duration, project-based, non-exclusive relationships suggest independence, unless the impermanence results from the operational characteristics of the industry rather than the worker's own business.
  4. Nature and degree of control. Scheduling, supervision, setting prices, ability to work for others, and reserved but unexercised control. The rule specifies that control implemented for legal compliance, safety, or quality assurance is still control, a point that has drawn criticism.
  5. Whether the work performed is integral to the potential employer's business. Not whether the worker is integral, but whether the function is critical, necessary, or central.
  6. Skill and initiative. Specialized skill alone is not enough; the question is whether the worker uses that skill in connection with business-like initiative.

Additional factors may be considered if they bear on economic dependence.

Note on the rule's status. The 2024 rule replaced a 2021 rule that had elevated two "core factors." It has been challenged in litigation, and the Department has announced enforcement positions that do not rely on it while that litigation proceeds, while continuing to apply the longstanding judicial economic reality test. Because the rule largely restates decades of case law, the practical analysis is stable regardless of the rule's fate: courts have applied a multifactor economic reality test since 1947 and continue to do so.

Part II: The IRS common law control test

For federal employment taxes (income tax withholding, FICA, and FUTA), the IRS applies the common law control test: the relationship is one of employment if the person for whom services are performed has the right to control and direct not only the result but also the details and means by which the result is accomplished.

Revenue Ruling 87-41 set out twenty factors. The IRS now organizes them into three categories:

Behavioral control (does the business control how the work is done?)

  • Instructions about when, where, and how to work.
  • Degree of instruction; more detailed instruction indicates employee status.
  • Evaluation systems measuring the details of how work is performed.
  • Training provided by the business.

Financial control (does the business control the economics?)

  • Significant investment in equipment.
  • Unreimbursed business expenses.
  • Opportunity for profit or loss.
  • Services available to the market.
  • Method of payment (regular wage versus flat fee per project).

Type of relationship

  • Written contracts (relevant but not controlling).
  • Employee-type benefits (insurance, pension, paid leave).
  • Permanency of the relationship.
  • Whether services are a key aspect of the regular business.

Form SS-8 allows either party to request an IRS determination. Employers should be cautious: a worker can file it unilaterally, and an adverse determination reaches all similarly situated workers.

Section 530: the safe harbor that saves employers

Section 530 of the Revenue Act of 1978 provides relief from federal employment tax liability for misclassification if the employer satisfies three requirements:

  1. Reasonable basis for treating the worker as a contractor, which may be judicial precedent or published rulings, a prior IRS audit that did not assess taxes for that class of workers, a longstanding recognized practice of a significant segment of the industry, or any other reasonable basis.
  2. Substantive consistency: the employer treated the worker, and all substantially similar workers, as contractors.
  3. Reporting consistency: the employer filed all required federal tax returns, including Forms 1099, consistent with contractor treatment.

Section 530 is powerful and frequently decisive in an IRS audit. It is also easy to lose: a single Form 1099 not filed, or one similarly situated worker treated as an employee, can forfeit it. It does not apply to certain technical service workers under § 530(d), and it does not protect against FLSA, state law, or benefits claims.

The Voluntary Classification Settlement Program allows eligible employers to reclassify prospectively with reduced federal tax liability. It requires meeting eligibility conditions and is a considered decision, not a routine filing.

Part III: The common law agency test

For statutes that use the word "employee" without a meaningful definition, the Supreme Court applies the common law of agency.

Nationwide Mutual Insurance Co. v. Darden, 503 U.S. 318 (1992), held that ERISA's circular definition ("any individual employed by an employer") incorporates traditional agency principles, and adopted the factors from Community for Creative Non-Violence v. Reid, 490 U.S. 730 (1989):

the hiring party's right to control the manner and means by which the product is accomplished ... the skill required; the source of the instrumentalities and tools; the location of the work; the duration of the relationship between the parties; whether the hiring party has the right to assign additional projects to the hired party; the extent of the hired party's discretion over when and how long to work; the method of payment; the hired party's role in hiring and paying assistants; whether the work is part of the regular business of the hiring party; whether the hiring party is in business; the provision of employee benefits; and the tax treatment of the hired party.

This test governs Title VII, the ADEA, the ADA, the FMLA, and ERISA, among others.

The copyright consequence most companies miss

Reid was a copyright case. It matters enormously for technology companies, because under 17 U.S.C. § 101, a work is a "work made for hire" if it is prepared by an employee within the scope of employment, or if it falls within one of nine enumerated categories of specially ordered or commissioned works and there is a signed written agreement.

Software is not among the nine categories. Neither are most designs, most technical documentation, or most business content.

The consequence: if your developer is an independent contractor rather than an employee, and you did not obtain a written assignment, the contractor owns the copyright in the code, and you have at most an implied nonexclusive license. Companies discover this in acquisition diligence, at the worst possible moment.

The fix is one sentence, and it must be present: a present assignment of all right, title, and interest, in a signed writing, in every contractor agreement. Do not rely on "work made for hire" language alone; include a fallback assignment. See Employee Invention Assignment Agreements and Work Made for Hire Determination Checklist.

Part IV: The ABC test

Several states apply an ABC test that presumes employee status and places the burden on the hiring entity to establish all three prongs.

The California version

Dynamex Operations West, Inc. v. Superior Court, 4 Cal. 5th 903 (2018), adopted the ABC test for wage order claims. The legislature codified and extended it in AB 5, now at Cal. Lab. Code §§ 2775 to 2787.

A worker is an employee unless the hiring entity demonstrates:

(A) 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) the worker performs work that is outside the usual course of the hiring entity's business; and

(C) the worker is customarily engaged in an independently established trade, occupation, or business of the same nature as the work performed.

Prong B is the one that decides cases. It is not about control at all. A software company that engages software developers cannot satisfy prong B, no matter how independent the developers are, because writing software is the company's usual course of business. The Dynamex court gave the example: a retail store hiring a plumber to fix a leak satisfies prong B; the same store hiring a cake decorator to make cakes it sells does not.

AB 5 contains dozens of exemptions, added and amended repeatedly, covering many licensed professionals, certain freelance writers and photographers, business-to-business contracting relationships meeting a multi-part test, referral agencies, and others. Exempt relationships are evaluated under the older, multifactor Borello standard rather than ABC. The exemptions are detailed and technical, and qualifying for one requires satisfying every listed condition.

Proposition 22, adopted by California voters in 2020, created a separate framework for app-based rideshare and delivery drivers, classifying them as independent contractors subject to specified benefits. The California Supreme Court upheld it in Castellanos v. State of California (2024), rejecting a constitutional challenge based on the legislature's workers' compensation authority.

Other ABC states

  • Massachusetts, Mass. Gen. Laws ch. 149, § 148B, applies a strict ABC test, and its prong B asks whether the service is performed outside the usual course of the employer's business or outside all the places of business of the employer.
  • New Jersey applies ABC for unemployment and wage law.
  • Illinois, Connecticut, Vermont, and others apply ABC or ABC-like tests for particular purposes, most commonly unemployment insurance.

Many more states apply ABC for unemployment insurance only, which is a common trap: a company can be correct under the IRS and FLSA tests and still owe unemployment contributions.

Part V: The NLRB standard

Union organizing and unfair labor practice cases turn on whether workers are "employees" under § 2(3) of the National Labor Relations Act, which excludes independent contractors.

The Board applies the common law agency factors, and the contested question has been what role entrepreneurial opportunity plays. The Board's position has changed with its composition: a 2019 decision elevated entrepreneurial opportunity as a "prism" through which the factors are viewed, and The Atlanta Opera, Inc., 372 NLRB No. 95 (2023), overruled that approach and returned to treating entrepreneurial opportunity as one factor among the traditional common law factors, focused on whether the worker has significant opportunity for gain or loss in actual practice.

Expect this standard to continue shifting. For a company facing an organizing campaign, the operative question is whether the workers actually run independent businesses, which is a fact question that does not change with the legal standard.

Part VI: What misclassification costs

The bill is larger than most employers expect, because it comes from multiple directions at once.

Wage and hour (FLSA and state law)

  • Unpaid minimum wage and overtime for hours over 40, which for full-time contractors paid a flat rate is often substantial.
  • Liquidated damages equal to the unpaid amount, 29 U.S.C. § 216(b), unless the employer shows good faith and reasonable grounds.
  • Attorney's fees and costs to a prevailing plaintiff.
  • A two-year limitations period, extended to three years for willful violations.
  • Collective actions under § 216(b), and state class actions, which is how these cases usually arrive.
  • State law penalties, which in California include wage statement penalties, waiting time penalties, expense reimbursement under Lab. Code § 2802, and Private Attorneys General Act exposure.

Tax

  • Unpaid income tax withholding, the employer and employee shares of FICA, and FUTA.
  • Interest and penalties, subject to reduced rates under IRC § 3509 where the failure was not intentional and Forms 1099 were filed.
  • Potential personal liability for responsible persons for trust fund taxes under IRC § 6672.
  • Section 530 relief may eliminate the federal tax exposure entirely if its conditions are met.

Benefits

  • ERISA claims for plan participation, which can be very expensive where a retirement plan is involved and can raise plan qualification issues.
  • Health coverage and Affordable Care Act employer mandate exposure.

Insurance and state programs

  • Unemployment insurance contributions, interest, and penalties.
  • Workers' compensation premiums, and, in a serious injury case, loss of the exclusive remedy defense, which exposes the employer to tort liability.

Other

  • Discrimination, leave, and whistleblower statutes that apply only to employees.
  • Immigration compliance (Form I-9 for employees).
  • IP ownership gaps, as discussed above.
  • Joint employer exposure where staffing agencies are involved.

Part VII: The classification audit

Run this exercise for every group of contractors, in writing, with counsel where the exposure is material.

Step 1: Inventory. List every worker not on payroll: 1099 contractors, consultants, agency temps, gig workers, offshore developers, and anyone paid through accounts payable for services.

Step 2: Group them. Classification is analyzed by role, not by person. Group workers doing substantially similar work under substantially similar arrangements.

Step 3: Map jurisdictions. Where does each worker perform services? State law follows the work location, and remote work has made this materially harder. A contractor who moved to California created a California problem.

Step 4: Apply each applicable test. For each group, run the FLSA economic reality factors, the IRS control factors, the Darden agency factors, and the applicable state test. Write down the answer and the reasoning.

Step 5: Flag the red facts. These recur:

  • Full-time hours over an extended period for a single client.
  • Working on the company's premises with company equipment.
  • Attending internal meetings and appearing on the org chart.
  • Supervised by a company manager who directs how the work is done.
  • Paid hourly through a regular cycle rather than by project or deliverable.
  • Exclusivity, or a practical inability to work for others.
  • Company email address and company title.
  • Performing the same work as W-2 employees.
  • No business entity, no other clients, no marketing, no business insurance.
  • Required to follow company policies unrelated to the deliverable.
  • Company sets the price and the worker cannot negotiate.
  • Company provides training beyond product familiarization.

Step 6: Decide. Options for each group:

  • Confirm contractor status with documentation of the supporting facts.
  • Restructure the relationship to align with contractor status (project-based scope, deliverable-based payment, worker-supplied tools, no supervision of method, no exclusivity, worker's own entity and insurance).
  • Convert to employee status, prospectively.
  • Use a staffing agency or employer of record, understanding that joint employer exposure is not eliminated.

Step 7: Fix the documents. Whatever the classification:

  • Present assignment of IP, in writing, signed.
  • Confidentiality obligations.
  • Clear scope, deliverables, and acceptance.
  • No provisions that undercut the classification (no "employee handbook applies," no company-issued title, no paid time off).
  • For contractors, an obligation to carry their own insurance and to comply with tax obligations, plus an indemnity, understanding that an indemnity does not cure statutory liability.

Step 8: Consider the conversion mechanics. Reclassification carries its own risks: it can be evidence of prior misclassification, it may trigger a Section 530 substantive consistency problem, and it raises questions about back periods. Sequence it with counsel, and consider whether the Voluntary Classification Settlement Program fits.

Step 9: Privilege. Run the audit through counsel so that the analysis is privileged. An unprivileged memo concluding that fifteen developers are probably employees is the plaintiff's best exhibit. See Attorney-Client Privilege and Work Product for Businesses.

Part VIII: Joint employment and the staffing layer

Classification has a companion question that arises whenever a third party sits between the worker and the business: joint employment. Two entities may both be employers of the same worker, and both may be liable.

Under the FLSA, the test is again economic reality. Courts look at whether the putative joint employer hires or fires, supervises and controls schedules and conditions, determines the rate and method of payment, and maintains employment records, along with broader factors about the work's integration into the business. A company that uses a staffing agency but directs the daily work, sets the schedule, evaluates performance, and effectively decides who stays is exposed regardless of who issues the paychecks.

Under the NLRA, the standard has swung repeatedly between requiring direct and immediate control and permitting reserved or indirect control to establish joint employer status. Rulemaking and litigation have moved it more than once in recent years. For planning purposes, assume that reserved contractual control over essential terms can matter, and either exercise the control and accept the status or genuinely delegate it.

Practical guidance for companies using staffing agencies or an employer of record:

  • Do not write the agency's job descriptions, set the agency's pay rates, or run the agency's performance reviews.
  • Route discipline and termination decisions through the agency, and document that they are the agency's decisions.
  • Avoid giving agency workers company titles, company email addresses, and company org-chart positions if you are relying on separation.
  • Indemnities from the agency are worth the agency's balance sheet and insurance, so verify both.
  • Confirm the agency actually has signed IP assignments and confidentiality agreements from its personnel, and get the right to inspect them.

Part IX: The gig economy and where the law is heading

The largest classification battles of the last decade have involved app-based platforms, and they have produced three distinct responses that are worth understanding because they preview the next decade.

Litigation. Wage and hour class and collective actions against platforms have produced enormous settlements, arbitration clauses with class waivers, and mass individual arbitration campaigns. See Website Terms of Service and Online Contract Formation and Class Actions Under Rule 23.

Ballot measures and carve-outs. California's Proposition 22 created a third category in substance if not in name: independent contractor status paired with statutory minimum earnings, healthcare stipends, and occupational accident insurance. Similar frameworks have been negotiated in other states, sometimes through legislation rather than ballot initiative.

Portable benefits proposals. A growing body of state legislation would allow contributions to accounts that follow the worker across engagements without, by itself, establishing employee status. The unresolved question these proposals address is that the American benefits system is attached to employment, which makes classification a much higher-stakes binary than it is in countries with universal coverage.

What this means for an ordinary business. Do not expect a stable federal answer soon, and do not build a workforce model that only works under one administration's rule. Build the relationship so that it satisfies the strictest test that plausibly applies to your workers' locations, or accept the exposure knowingly and price it. Those are the only two honest options.

A worked example

Basalt Interactive, Inc. (fictional) is a 40-person game studio in Texas with three contractor groups.

Group 1: Nine engineers. Full time, three years, company laptops, daily standups, reporting to Basalt's engineering director, paid hourly on a two-week cycle, no other clients. Four live in Texas, three in Washington, one in California, one in Massachusetts.

Analysis. Employees under every test. The FLSA economic reality factors point one way on every factor. The IRS control factors do too. Under California's ABC test, prong B alone is fatal: writing game code is Basalt's usual course of business. Massachusetts is the same. This group must be converted.

Exposure. Overtime for three years (game development involves crunch, so this number is not small), liquidated damages, payroll taxes, benefits participation, California expense reimbursement and wage statement penalties, and Massachusetts treble damages for wage violations. Section 530 may relieve the federal tax component if Basalt filed all 1099s and treated all similar workers consistently, which it did.

Also: Basalt's contractor agreements say the work is "work made for hire" but contain no assignment. Game code is not among the nine statutory categories, so nine engineers may own copyrights in Basalt's engine. This is the finding that will stop an acquisition.

Group 2: Two composers. Engaged per project, paid a flat fee per track, work from their own studios with their own equipment, have many other clients, market themselves publicly, operate through their own LLCs.

Analysis. Contractors under the FLSA and IRS tests comfortably. Under California's ABC test, prong B is arguable: is composing music the "usual course" of a game studio's business? Basalt does not otherwise employ composers and does not sell music. That is a defensible position, though not a certain one, and the AB 5 exemption for certain fine artists and musicians may apply. Neither composer is in California, so the question is academic for now, and Basalt should document that.

Fix needed: the composer agreements must contain a present assignment of copyright. Music is not in the nine statutory categories either, unless it qualifies as a contribution to an audiovisual work, which for game soundtracks is arguable but should not be relied on alone.

Group 3: One bookkeeper, 10 hours a week, sets her own schedule, has six other clients, uses her own accounting software, invoices monthly.

Analysis. Contractor under every test, including ABC, because bookkeeping is outside a game studio's usual course of business. Document it: her other clients, her business registration, her insurance, and her invoices.

The plan. Convert Group 1 effective at the start of the next quarter with a clean cutover, obtain assignments from all nine (which will require consideration, so negotiate it as part of the conversion package), fix the composer agreements, and keep a documented file for the bookkeeper. Run all of it through counsel. Budget for the conversion cost, and accept that it is far cheaper than the collective action.

Frequently asked questions

Does a signed independent contractor agreement protect us? No. Every test says the label is not determinative, and statutory rights cannot be waived by contract. A well-drafted agreement helps by documenting facts that support the classification, but it cannot make an employee into a contractor.

We pay through a 1099. Doesn't that settle it? No. Tax reporting is one factor and is not controlling. It does matter for the Section 530 safe harbor, which requires consistent 1099 filing.

The worker asked to be a contractor. Does that matter? Very little. The worker's preference is not one of the factors, and they can still bring a claim later, often after the relationship sours.

What is the single most important factor? It depends on the test. Under the FLSA and IRS tests, control and economic dependence do the most work. Under an ABC test, prong B (outside the usual course of business) is usually dispositive, and it does not consider control at all.

Can someone be a contractor for taxes and an employee for wage and hour law? Yes, and it happens constantly. The tests are different and are administered by different authorities. Analyze each separately.

We use an offshore development agency. Are we covered? Different analysis, and not necessarily safer. If the agency's personnel are integrated into your team and supervised by your managers, joint employment questions arise, and foreign labor law may impose its own classification and termination rules. Also confirm the agency has valid IP assignments from its own personnel; a chain-of-title gap offshore is still a gap.

What about a professional employer organization or employer of record? An EOR employs the worker and leases them to you, which addresses payroll, tax, and benefits compliance. It does not necessarily eliminate joint employer status for discrimination, wage and hour, or NLRA purposes. It is a useful tool, not a shield.

How far back does exposure go? FLSA: two years, three if willful. Payroll taxes: generally three years from filing, unlimited if no return was filed. State wage claims: commonly three to four years, and longer in some states. Benefits claims under ERISA can reach further.

We want to convert people. How do we do it without admitting anything? Carefully, with counsel. Prospective conversion is generally the right answer, framed as a business decision, with a clean effective date, appropriate consideration for any new agreements, and consistent treatment of the whole group. Do not convert some and leave similarly situated others as contractors, which damages Section 530 and looks arbitrary.

Does remote work change the analysis? It changes the jurisdiction, which is often the whole ballgame. A contractor who relocates to California, Massachusetts, or New Jersey may convert your defensible arrangement into an indefensible one overnight. Track where your workers actually are, and put a notification obligation in every agreement.

Closing thought

Worker classification is one of the few areas where the law openly refuses to respect what the parties wrote down, and it does so for a reason: the protections at stake are statutory floors, and a floor that can be contracted away is not a floor.

That framing makes the compliance question simpler than it looks. Do not ask "how do we document this as a contractor relationship?" Ask "is this person running their own business, or working in ours?" Look at the answer honestly. The facts that make someone a contractor, other clients, their own tools, their own pricing, their own schedule, their own risk of loss, are the same facts under every test, in every state, and they are visible from across the room.

The companies that get burned are almost never the ones who thought about it and got a close call wrong. They are the ones who hired a full-time employee, called them a contractor to avoid payroll setup, and then did it fourteen more times.

Related articles

This article is provided for general informational purposes and does not constitute legal advice. Classification tests differ by statute and by state, and the applicable federal rules have been the subject of ongoing rulemaking and litigation. Consult qualified employment counsel about any particular workforce.