Maine does not have a statewide general contractor license, so for most contractors the real question is not a license but the insurance you need to work and to win jobs. If you have any employees, you must carry workers compensation under 39-A M.R.S. section 401, and general contractors and clients will require general liability before they let you on a site. A few trades, mainly electricians and plumbers, are licensed by the state, and a new residential-contractor license is set to arrive in 2027.
Who this is for: Maine general contractors and tradespeople lining up the insurance a job or a client requires, and owners tracking the licensing changes ahead.
The short version
- Maine has no statewide general contractor license; most trades are governed locally rather than by a state license.
- Electricians and plumbers are licensed by the state; general contractors and most sub-trades are not.
- If you have any employees, workers comp is required by law, license or no license.
- On a construction site, an uninsured sub's workers can become the hiring contractor's employees.
- A residential-contractor license requiring proof of workers comp is reported to take effect in 2027.
What Maine actually requires today
Because there is no general contractor license to hold, your obligations come from three places. First, workers comp is mandatory for any employer with employees, so a contractor with even one worker needs it. Second, the people who hire you set their own insurance requirements: general contractors, developers, and clients almost always require general liability, and often ask a sub for proof of workers comp or an independent-contractor statement before letting them on the job. Third, Maine's Home Construction Contracts Act requires a written, signed contract for any home construction job over 3,000 dollars in materials or labor, which is a consumer-protection rule rather than a license, and does not by itself require insurance.
| Requirement | What it means |
|---|---|
| General contractor license | None statewide; general contractors are not licensed by the state today |
| Workers comp by law | Required for any employer with employees, license or not |
| General liability | No state mandate, but required by most general contractors and clients |
| Licensed trades | Electricians and plumbers are licensed by the state |
| Written contract | Required for a home job over 3,000 dollars, as consumer protection |
Why workers comp matters even without a license
The absence of a general contractor license does not soften the workers comp rule. A contractor with employees needs coverage regardless, and on a construction site Maine's rules go further: a person doing construction work for a hiring agent is presumed to be that hiring agent's employee unless they are a true independent subcontractor or run heavy equipment over 7,000 pounds. So a general contractor who lets an uninsured crew on the job can end up owning their injuries. A solo contractor with no employees may not be forced to carry comp, but the builders who hire them will usually still ask for proof of coverage or a state independent-contractor statement before the work starts.
The 2027 change to watch
Maine has enacted a new residential-contractor licensing framework that, as reported, takes effect January 1, 2027 for residential projects above a reported 15,000 dollars, and would require a licensed residential contractor to show proof of workers compensation for all employees and liability insurance. The specific dollar figures and effective date come from legislative summaries and are still being finalized, so treat them as directional rather than settled. The practical takeaway is unchanged: if you have employees you already need workers comp today, and the coming license simply makes that proof part of the paperwork.
A Saco example
Illustrative, not a quote. A Saco general contractor with a three-person crew has no state license to obtain, but he still needs workers comp because he has employees, and the builders who hire him require both general liability and proof of that coverage. He carries a policy and produces a certificate the same day a larger builder asks. On one job he nearly hires an uninsured framing crew, but because an uninsured sub's workers could become his employees under the construction rule, he first collects their proof of coverage. We make sure his crew is rated on the right kind of work so the price is fair. See our workers comp for general contractors page.
Real questions Maine owners ask
Do I need a contractor license to work in Maine?
Not a statewide general contractor license, because Maine does not issue one. Electricians and plumbers are licensed, and most general contractors work under local rules and their clients' requirements instead.
What insurance do Maine contractors actually need?
If you have employees, workers comp is required by law. General liability is not a state mandate, but general contractors and clients almost always require it before you can start a job.
Do I need workers comp if I am a solo contractor with no employees?
The law may not force it on a one-person business, but a general contractor who hires you often requires proof of coverage or a state independent-contractor statement anyway, so many solos carry a policy to win work.
Can I be responsible for an uninsured subcontractor's injured worker?
Yes, in construction. A person doing construction work for you is presumed your employee unless they are a true subcontractor or run heavy equipment over 7,000 pounds, so an uninsured sub's injuries can become yours.
Does Maine require a written contract for home projects?
Yes. The Home Construction Contracts Act requires a written, signed contract for any home job over 3,000 dollars in materials or labor. It is a consumer-protection rule and does not itself require insurance.
Is Maine adding a contractor license?
A residential-contractor license is reported to take effect on January 1, 2027 for larger residential projects, and would require proof of workers comp and liability insurance. The details are still being finalized.
Which trades does Maine license?
Maine licenses electricians and plumbers, among certain other regulated trades. General contractors and most sub-trades are not licensed statewide, though local permits and client requirements still apply.
Why Maine owners choose Morrow
- We shop the right market for you. In Maine you buy workers' comp on the open market from any carrier licensed in the state, with the state-created MEMIC competing alongside private insurers and also standing as the guaranteed insurer of last resort, so we can shop your price freely and still have a fallback if you are hard to place.
- We catch pricing mistakes. Your price depends heavily on the category your work falls into for pricing (the class code). Put people in the wrong category and you overpay for years. We review your payroll and classifications before you buy.
- Proof of coverage, fast. Need a certificate (proof of coverage) for a general contractor or a landlord before Monday? We turn those around the same business day for most carriers.
- We help lower the score that drives your price. Insurers give you a score based on your past claims that raises or lowers your cost (the experience modification rate). We review it each year, flag errors, and connect you with return-to-work and safety resources that bring it down.
- Real people when a claim happens. When someone gets hurt, we stay involved through the life of the claim, not just at renewal.
Related Maine guides
Every Maine business is set up a little differently. These companion guides answer the same question for other situations, plus the national explainers behind the terms used here.
- Business insurance in Maine (start here)
- Workers comp: the owner's overview
- I own an LLC: do I need workers comp?
- I'm a sole proprietor: do I need workers comp?
- I own a corporation (C-corp or S-corp): do I need it?
- We're a partnership: do we need workers comp?
- We're a nonprofit: do we need workers comp?
- My workers are 1099: do I still need it?
- Only part-time or seasonal staff: do I need it?
- I only employ family: do I need workers comp?
- Remote or out-of-state staff: do I need coverage?
- What happens if I don't carry workers comp?
- How much does workers comp cost?
- How do I get workers comp (even if turned down)?
- Workers compensation insurance, explained
- What workers comp costs (national guide)
- Hiring your first employee: what changes
- Workers comp vs employers liability
- Maine general contractor workers comp
This guide is general information, not legal advice. Maine rules and penalty amounts can change, so verify current requirements with Maine Workers' Compensation Board (WCB) or a licensed advisor before you rely on them. Last updated: July 2026.