Skip to content 
Massachusetts presumes every worker is an employee. To treat someone as an independent contractor, the business must prove all three prongs of the ABC test: freedom from control, service performed outside the usual course of the business, and an independently established trade of the same nature. Failing any one prong makes the worker an employee, and the second prong defeats most arrangements.
“Our subcontractors have their own LLCs, their own insurance, and they invoice us. That is about as independent as it gets, surely?”
“Our accountant says these people are fine as 1099s and our lawyer is not so sure. Who is right?”
“If we have been getting this wrong, is there a way to fix it without waiting to be caught?”
The Presumption Comes First
Massachusetts runs one of the strictest classification standards in the country, and it starts from a position most employers find surprising. Under Chapter 149, Section 148B, an individual performing a service is an employee unless the business proves all three prongs of the ABC test.
Nothing about that presumption depends on how the parties describe themselves. The title on the invoice, the tax form issued, and the language of the agreement are inputs to the analysis rather than answers to it.
The unemployment system runs its own version of the same idea. Chapter 151A, Section 2 treats services as employment unless and until the employing unit demonstrates otherwise, which is the test the Department of Unemployment Assistance applies in a reemployment tax audit.
Three Prongs, and All of Them
| Prong | What Must Be Proved | What Actually Decides It |
| A | Freedom from control and direction, under the contract and in fact | Who sets hours and methods, who supervises, whether the worker can refuse an assignment. The contract language is only half of it, since the test also asks what happened in practice |
| B | The service is performed outside the usual course of the employer’s business | Whether the work is necessary to the business or merely incidental to it. This is the prong that fails most arrangements, and failing it is fatal on its own |
| C | The worker is customarily engaged in an independently established trade of the same nature | Whether a genuine business exists apart from this engagement: other customers, its own marketing, its own tools, its own risk of loss |
| Measurement | All three, together, proved by the business | The prongs are conjunctive. Satisfying two and failing one produces an employee, so an arrangement is only as strong as its weakest prong |
The prongs are conjunctive, which is the detail that decides most cases. A business can satisfy two comfortably and still end up with employees, because failing any single prong ends the analysis.
Prong B: Necessary or Merely Incidental
The second prong asks whether the service is performed outside the usual course of the business, and it is where good-faith arrangements go to die.
The workable standard comes from guidance issued by the Attorney General’s office, which frames the question as whether the service is necessary to the employer’s business or merely incidental to it. The Commonwealth’s own summary of the law collects the statute, the guidance, and the leading decisions in one place.
Applied honestly, that standard is unforgiving. A construction company engaging framers, a cleaning company engaging cleaners, a delivery business engaging drivers, and a salon renting chairs to stylists all face the same difficulty: the work being bought is the work the business sells.
The incidental side is narrower than employers hope. An accountant engaged by a restaurant, an electrician engaged by a law firm, a photographer engaged by a manufacturer, these are services the business consumes rather than sells, and they sit far more comfortably outside the usual course.
This is also why the first question at the top has an unwelcome answer. An LLC, its own insurance, and clean invoicing are genuinely useful facts, and they speak almost entirely to the third prong. None of them reaches the second one.
The Numbers Behind the Test
- 3: the prongs, all of which the business must prove.
- 1: the prong that ends the analysis when it fails, whichever one it is.
- 2: the prong that defeats most arrangements in practice.
- 3: the separate Massachusetts regimes that ask this question differently.
- 0: the weight the worker’s own preference carries.
- Quarters: the periods a finding reaches back across, not months.
One Test, or Several? The Answer Employers Miss
The second question at the top is not a disagreement between advisers. It is usually two people answering two different questions correctly.
Massachusetts does not run a single classification test. The wage and hour statute has its version, the unemployment law has its own in Chapter 151A, and workers’ compensation operates on a different definition again, which the courts have confirmed is not displaced by the wage law standard.
So a worker can be outside employee status for one purpose and inside it for another, and a business that has satisfied itself on one regime has not necessarily answered the others.
There are narrow carve-outs too. Federal transportation law has been held to preempt the second prong in certain motor carrier contexts, which matters to delivery and logistics operators and to almost nobody else.
The practical consequence for an employer is sequencing rather than despair: decide classification against every regime the business actually touches, and document the reasoning once rather than defending it three times. Where the wage law consequences are in play, that analysis belongs with employment counsel, while the contributions, the records, and the audit itself sit with a CPA. What an assessment costs prices the downside.
Where Audits Find It
Classification rarely surfaces on its own. It surfaces because someone filed an unemployment claim, because filings did not reconcile, or because another agency passed the file along, routes covered in what triggers a DUA audit.
Once it surfaces, the review is not limited to the person who triggered it. Every worker engaged on the same terms is part of the same question, which is how a single separation becomes a multi-year exposure.
Industries with concentrated risk are predictable: construction and trades, cleaning and facilities, delivery and courier work, home care, salons and spas, staffing, and professional services firms that use long-term subcontractors as part of their delivery model.
Fixing It Before Someone Else Does
The third question is the right one to be asking, and the answer is yes, with planning.
A voluntary conversion is a documented business decision: the arrangements that fail are identified, the affected people are moved onto payroll from a chosen date, the accounts and filings are aligned, and the reasoning is recorded while it can still be explained calmly.
The alternative is conversion by determination, where the date is chosen by an auditor, the periods are chosen by the statute, and the explanation is offered under pressure with interest already running.
Genuine contractor relationships can also be strengthened rather than abandoned. Scopes of work that describe deliverables rather than hours, invoices from businesses rather than individuals, evidence of other customers, and the absence of day-to-day supervision all build the record the test asks for.
Common Mistakes With Classification
- Treating an LLC, insurance, and invoicing as proof of contractor status.
- Relying on a signed agreement without matching it to how the work is actually done.
- Answering one regime’s test and assuming the others follow.
- Accepting a worker’s request for 1099 treatment as a defense.
- Engaging contractors to do the exact work the business sells.
- Waiting for a claim or a notice before reviewing arrangements that were always doubtful.
The Test Is Not Negotiable, but the Outcome Is Manageable
Massachusetts has made a policy choice that favors employee status, and the presumption is not going to move. What an employer controls is the record: how engagements are structured, what the documents say, and whether the analysis was done before or after the letter arrived. The whole audit picture sits in the reemployment tax audit guide.
Ed Parsons CPA runs ABC test classification reviews for Massachusetts employers, plans voluntary reclassifications, and represents businesses through DUA examinations and assessments, under the firm’s DUA audit help service. Where the wage law dimension is live, we coordinate with employment counsel rather than substituting for it.
If a determination or an assessment has already issued, a Business CPA Tax Resolution Case Analysis prices the exposure before anything is signed or paid.
