COI requirements by state / Montana

State guide

Montana contractor insurance requirements

What Montana law says about workers' comp, contractor license insurance and indemnity clauses, and what to check on a contractor COI for a project there.

By the Forsured teamReviewed

  • Workers' comp required at

    1 employee

  • License insurance minimum

    No statewide minimum

  • Anti-indemnity statute voids

    Own negligence, even in part; reaches additional insured

Workers' comp in Montana

Montana employers with full-time, part-time, seasonal or occasional employees must carry workers' comp. Self-employed contractors can apply for an Independent Contractor Exemption Certificate.

The agency in charge is the Montana Department of Labor and Industry. It can tell you whether a specific business needs coverage, and most states let you look up an employer's policy online.

Contractor licensing and insurance

We found no statewide general liability minimum tied to a general contractor license. Montana requires construction contractors to register with the state. Cities and counties can set their own licensing and insurance rules, so check where the project is.

Indemnity and additional insured clauses

Montana's anti-indemnity statute (Mont. Code Ann. § 28-2-2111) voids construction contract clauses that make a contractor indemnify another party for that party's own negligence, even in part. Clauses limited to the contractor's own share of fault generally hold up. The statute also reaches insurance: a contract can't use an additional insured requirement to get coverage for the other party's negligence that the indemnity rule forbids.

What to check on a contractor COI for a Montana project

  1. Workers' comp. Nearly every contractor with employees needs it in Montana. A contractor with a crew and no workers' comp on its COI is a gap. For an out-of-state contractor, confirm Montana is listed on the workers' comp policy.
  2. General liability. Montana doesn't set a statewide floor for a general contractor license, so your project requirements set the bar. Compare each limit on the COI with what the contract asks for.
  3. Additional insured. In Montana, the anti-indemnity statute also limits what an additional insured requirement can do. Ask your broker or attorney which wording holds up, then check that the endorsement on file matches it.
  4. Dates. Every policy should run through the end of the job. A COI only shows coverage on the day it was issued, so check again at each renewal.

Forsured checks every contractor COI against your project requirements, then keeps checking for the life of the project. Send us one project's requirements and a contractor COI or two for a free COI risk check.

Common questions

Do contractors need workers' comp in Montana?

Montana employers with full-time, part-time, seasonal or occasional employees must carry workers' comp. Self-employed contractors can apply for an Independent Contractor Exemption Certificate.

Does Montana require contractors to carry general liability insurance?

We found no statewide general liability minimum tied to a general contractor license. Montana requires construction contractors to register with the state. Cities and counties can set their own licensing and insurance rules, so check where the project is.

Can a Montana construction contract make a contractor cover another party's negligence?

Montana's anti-indemnity statute (Mont. Code Ann. § 28-2-2111) voids construction contract clauses that make a contractor indemnify another party for that party's own negligence, even in part. Clauses limited to the contractor's own share of fault generally hold up. The statute also reaches insurance: a contract can't use an additional insured requirement to get coverage for the other party's negligence that the indemnity rule forbids.

Sources

  1. Montana workers' comp requirements, OnPay, May 2026
  2. Anti-Indemnity Statutes in All 50 States (2023), Gordon Rees Scully Mansukhani, 2023
  3. Another State Joins List of "Anti-Additional Insured" States, Duane Morris Construction Law Blog, 2012
  4. State Workers' Compensation Officials, U.S. Department of Labor

This guide is general information, not legal advice. Laws change and every contract is different, so confirm with the state agency, your broker or your attorney before you rely on it. Last reviewed Oct 28, 2026. Spotted something out of date? Write to hello@forsured.ai and we'll fix it.

See what's in your own contractor COIs.

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