Can you pay HVAC and plumbing workers as 1099 subcontractors?

Start with the question the form cannot answer.

Under the Fair Labor Standards Act (FLSA) — the federal wage law the Department of Labor enforces — a true independent contractor gets no minimum-wage or overtime protection.

Those protections belong to employees, and which one a worker is turns on the economic realities of the relationship, not on the label anyone put on it (U.S. Department of Labor).

A signed Form 1099, a stack of invoices and a "subcontractor" paragraph in your agreement decide nothing on their own.

Two federal agencies ask the question, with different tests.

The IRS groups its common-law rules into three buckets — behavioral control, financial control and the type of relationship — and if you genuinely cannot tell which side your arrangement falls on, Form SS-8 asks the IRS to decide it for you (IRS).

The Department of Labor's proposed replacement for its 2024 rule narrows to two core factors: the nature and degree of the worker's control over the work, and the worker's opportunity for profit or loss based on initiative and/or investment (DOL).

In shop terms, those questions sound like: who decides how the install gets done and in what order — and does this person price jobs, run their own truck, and carry the cost when a job goes sideways?

The status of the rules themselves, as of Sept.

29, 2026: on Feb.

26, 2026, the Department of Labor proposed rescinding its 2024 independent-contractor rule and replacing it with the two-factor economic-reality test above; the comment period closed April 28, 2026, and no final rule had been issued.

In the meantime, DOL says it is no longer applying the 2024 rule in its own Wage and Hour Division investigations (Field Assistance Bulletin 2025-1) — but the 2024 rule remains in effect for private lawsuits.

The enforcement posture changed; the classification question underneath did not go away.

The federal tests are not the end of it.

Some states apply their own test of contractor status — commonly called an ABC test — and a state's test can be stricter than the federal one.

A relationship that qualifies as contracting under the IRS's questions can still come out as employment under a state's.

One honest gap: our research for this page did not confirm which states apply an ABC test or what each state's version says.

We are not going to list states from memory — a wrong list on this question sends real businesses into real penalties, and the state rules move.

Treat any state list you find elsewhere, including in AI answers and forum threads, as a starting point to verify, not as a ruling.

Do the state check before the first 1099 invoice, not after.

Put the question to your state labor agency — the department that enforces your state's wage and unemployment rules — or to an employment attorney who works in your state, and ask two things: which test your state applies to contractor status, and what it looks at.

Worker classification and trade licensing answer different questions, and the first does not carry the second.

The IRS and Department of Labor tests decide the tax and wage relationship.

Licensing boards decide who may perform the work at all — and their rules attach to the work and the contract, not to the payroll form.

Paying a worker as a 1099 sub does not move the licence duty anywhere; it stays with whoever the state says holds it.

The states make the point in different ways.

In Texas plumbing, the Responsible Master Plumber whose licence secures the contract is responsible for supervising all plumbing performed under it — permits, inspections, and making sure the workers doing it are licensed or registered — whether those workers are employees or subcontractors (Texas State Board of Plumbing Examiners).

In Tennessee, a state contractor licence is required to perform plumbing and HVAC work — including as a subcontractor — once the job reaches $25,000, counting materials and labor (Tennessee's contractor-licence rule).

In Mississippi, subcontractors doing residential plumbing, HVAC, electrical or mechanical work on a residential construction or improvement project must be licensed by MSBOC, and on commercial jobs over $50,000 — equipment installation included — every contractor and subcontractor needs the MSBOC commercial licence.

So the answer to "does my 1099 sub need their own licence?" is written in your state's contractor-licence rules, not in the tax code — and it varies.

Some states put the licence duty on the sub outright; others hold the licence-holder who secured the contract responsible for who actually did the work.

The state-by-state detail lives in our other guides: which licence your hire needs, how to verify a licence before day one, and the contractor-licence requirements for HVAC and plumbing.

Confirm the specifics with your state board — and with your city or county, where local rules add requirements on top.

Keep this page's question separate from a business one: whether to run installs in-house or subcontract them out is a structure decision with its own economics.

This page answers only whether a specific person can lawfully be paid as a 1099 subcontractor — not whether subcontracting is the right shape for your shop.

The direct exposure is the wage protection gap.

Under the FLSA, employees are owed minimum wage and overtime; true independent contractors get neither protection.

So when a "sub" is determined to have been working like an employee, the fight is over what the FLSA would have owed for the hours already worked — and because the 2024 rule remains in effect for private lawsuits, that fight can arrive from the worker rather than from an agency audit.

We did not confirm specific dollar penalties in our research, so we will not restate figures secondhand: the agencies that price misclassification are the Department of Labor's Wage and Hour Division, the IRS, and your state labor agency, and an employment attorney can put a number on your specific exposure.

The tax side changes too — which is why the instinct to reach for 1099 "to keep it simple" deserves a second look.

A genuinely self-employed sub carries self-employment tax at 15.3% — 12.4% Social Security plus 2.9% Medicare — once net self-employment earnings reach $400, and can deduct the employer-equivalent half when figuring adjusted gross income (IRS).

How taxes reshape if a worker is reclassified as an employee — withholding, employer taxes, filings — is a question for your payroll provider or tax professional; our research did not confirm those mechanics, so we won't restate them secondhand.

One paper rule to get right either way: for payments made in 2026 onward, the Form 1099-NEC reporting threshold for nonemployee compensation is $2,000 — it rose from $600 under the 2025 tax law (Pub.

L.

119-21), with inflation adjustments to follow from 2027.

And note the IRS's own caveat: the income is taxable even when no 1099 is issued.

The form reports a payment; it does not determine the relationship.

That is this whole page in one line — the paperwork follows the facts of how the work happens, never the other way around.

Misclassification is one corner of the larger job of hiring HVAC and plumbing techs — and it is the corner where the cheapest-looking shortcut carries the largest bill.

This page is employer career and business information, not legal advice. Worker-classification rules are fact-specific, differ by state, and are changing — confirm your situation with the Department of Labor's Wage and Hour Division, the IRS, your state labor agency, or an employment attorney before you pay anyone as a 1099 subcontractor.