Montana · Construction claims reference

Construction Claim Rules in Montana

Every figure below is the researched rule for Montana, with its citation and a direct link to the official source so you can confirm it yourself. Covers statutory interest and when it starts accruing, how Actual Cash Value is determined and whether labor can be depreciated, whether a “no damages for delay” clause is enforceable and how long you have to file, the state-specific inputs behind a fully burdened labor rate and who can be held liable for a construction-site injury.

Statutory Interest & Accrual in Montana

The rate itself and the date interest starts running, which differs by claim type in most states.

Statutory interest rate

Floating, Fed prime loan rate + 3% (both pre- and post-judgment, simple only)

Damages capable of being made certain by calculation (e.g., an unpaid construction invoice) accrue prejudgment interest at the Federal Reserve's prime loan rate (per its H.15 release) plus 3 percentage points, fixed as of January 1 of the relevant year and held for that calendar year. Postjudgment interest uses the same formula. If the contract specifies its own rate, that rate controls instead.

Compounding: Simple only; the postjudgment statute expressly states interest 'may not be compounded.'

Citation: Mont. Code Ann. § 27-1-211 (right to interest); Mont. Code Ann. § 25-9-205 (rate mechanism, incorporated via § 27-1-213)

Source: https://mca.legmt.gov/bills/mca/title_0250/chapter_0090/part_0020/section_0050/0250-0090-0020-0050.html

Last checked: 2026-08-25

The rate is fixed on January 1 for the calendar year from the Federal Reserve prime loan rate plus 3 points, so pull the current figure rather than a stored one. At the last check, in August 2026, the formula gave about 9.75%.

Accrual: breach of contract claim

From the particular day the right to recover vested, generally the breach/due date

Montana's general right-to-interest statute allows a party whose right to recover damages vests on a particular day to also recover interest from that day, applicable to damages capable of being made certain by calculation, such as an unpaid construction invoice. In practice this is the date payment was due or the date of breach.

Citation: Mont. Code Ann. § 27-1-211

Source: https://mca.legmt.gov/bills/mca/title_0270/chapter_0010/part_0020/section_0110/0270-0010-0020-0110.html

Accrual: property damage / tort claim

Not date of loss: from 30 days after a written, itemized demand was presented to the defendant

Montana's separate tort-interest statute limits itself to damages capable of being made certain by calculation and starts interest 30 days after the claimant presented a written statement to the defendant or their agent, stating the claim and how the specific sum was calculated. This is a demand-based trigger, not an automatic date-of-loss right; it also excludes damages like pain and suffering or future losses not yet incurred.

Citation: Mont. Code Ann. § 27-1-210

Source: https://law.justia.com/codes/montana/title-27/chapter-1/part-2/section-27-1-210/

Sending a proper written, itemized demand promptly is what starts this 30-day clock; without one, interest doesn't begin to accrue under this provision at all.

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Actual Cash Value & Property Loss in Montana

How ACV is determined, whether labor cost can be depreciated and the rules on releasing withheld recoverable depreciation.

Actual Cash Value rule

Broad evidence rule for partial losses; face policy value for total losses

For a partial loss, Montana courts may consider any evidence logically tending toward a correct estimate of value at the time of loss: the broad evidence rule. For a total loss of insured real-property improvements with no fault by the insured, Montana's separate valued-policy law instead makes the face amount of the policy conclusive proof of value, displacing the broad-evidence approach for that scenario only.

Citation: CQI, Inc. v. Mountain West Farm Bureau Mut. Ins. Co., 2010 WL 2943143 (D. Mont. 2010); McIntosh v. Hartford Fire Ins. Co., 106 Mont. 434, 78 P.2d 82 (1938); Mont. Code Ann. § 33-24-102 (total-loss valued policy law)

Source: https://mca.legmt.gov/bills/mca/title_0330/chapter_0240/part_0010/section_0020/0330-0240-0010-0020.html

CQI is a federal district court decision (Erie prediction of Montana law), not a Montana Supreme Court opinion, though consistent with older state Supreme Court cases on the same point.

ACV statute or regulation

No Montana statute or regulation restricts depreciation of labor when calculating ACV. The Commissioner of Securities and Insurance said labor could not be depreciated in a December 2019 advisory memorandum but rescinded it in May 2020.

Mont. Code Ann. 33-24-101 (originally enacted 1959) provides that for fire insurance, the measure of indemnity is the expense of replacing the property in the condition it was in immediately before the loss, unless the policy specifies a more favorable basis to the insured. It allows the insurer to rescind for a fraudulent valuation. This is a general replacement-cost indemnity measure for fire policies and predates the labor-depreciation dispute. It does not define ACV as a materials/labor split and does not mention depreciation of labor at all. The Montana Commissioner of Securities and Insurance issued an advisory memorandum on December 23, 2019 stating that labor may not be depreciated in Montana. A March 5, 2020 notice extended its form-filing deadline. Both were rescinded on May 22, 2020 without a stated reason. The Commissioner's office identified no later guidance when asked in October 2026.

Citation: Mont. Code Ann. 33-24-101; Montana CSI Advisory Memorandum, Depreciation of Labor (Dec. 23, 2019), rescinded May 22, 2020

Source: https://mca.legmt.gov/bills/mca/title_0330/chapter_0240/part_0010/section_0010/0330-0240-0010-0010.html

Some published surveys cite § 33-24-101 as a labor depreciation restriction. The statute is a general fire insurance indemnity measure and says nothing about labor or materials, so that reading is not supported by its text. Surveys that still list Montana as barring labor depreciation are citing the 2019 memorandum, which was rescinded in May 2020.

Recoverable depreciation holdback

No Montana statute sets a holdback release deadline, so the policy terms control. A 2019 Commissioner memorandum barring labor depreciation was rescinded in 2020.

No Montana statute governs the timing or process for paying withheld recoverable depreciation, so the policy terms control. On the related scope question, the Commissioner of Securities and Insurance issued an advisory memorandum on December 23, 2019 stating that labor may not be depreciated, then rescinded it on May 22, 2020. No current Montana guidance limits labor depreciation. With no statute in play the policy is the whole of the law here, so read three things in it: what proof of completed repairs the insurer can require, how long the insured has to claim the withheld depreciation and whether that period can be extended in writing. Policy deadlines commonly run from 180 days to two years from the date of loss and they are enforced as written. Ask for the extension before the period runs rather than after.

Citation: Mont. Code Ann. § 33-24-101; Montana CSI Advisory Memorandum, Depreciation of Labor (Dec. 23, 2019), rescinded by Notice of May 22, 2020.

Source: https://mca.legmt.gov/bills/mca/title_0330/chapter_0240/part_0010/section_0010/0330-0240-0010-0010.html

Copies of the 2019 memorandum, its 2020 extension and the rescission notice were supplied by the Commissioner's office on request in October 2026. Montana's general indemnity statute, § 33-24-101, sets the measure as the expense of replacing the property and does not address labor.

Delay Claims in Montana

Whether a no-damages-for-delay clause will be enforced against you and the deadline for bringing a construction contract claim.

“No damages for delay” clause enforceability

No Montana state or federal court has considered the validity of no-damages-for-delay clauses.

No Montana state or federal decision addresses the validity of no-damages-for-delay clauses, so there is no Montana rule to apply. Expect the analysis to turn on general contract principles.

Source: https://www.woodsaitken.com/sites/default/files/Survey_50-State-Matrix_Pay-If-Paid_No-Damage-for-Delay.pdf

Construction contract filing deadline

8 years for a written contract, covenant, obligation, or liability

Montana's limitations period for an action on a contract, covenant, obligation or liability founded on an instrument in writing is 8 years from accrual, among the longest in the country for a written contract, covering an ordinary construction contract claim. Two deadlines sit in front of that one on most construction claims. A mechanic's lien and a payment bond claim each run on their own, far shorter clock, counted from last furnishing rather than from breach and missing either one removes the security while leaving the contract claim alive but unsecured. Check those dates first. Accrual is the other half of the question: the period runs from breach, which on a payment dispute is usually the date payment came due rather than the date the work was done.

Citation: Mont. Code Ann. § 27-2-202

Source: https://law.justia.com/codes/montana/title-27/chapter-2/part-2/section-27-2-202/

Labor Burden Inputs in Montana

The state-specific rates and requirements that sit underneath a fully burdened hourly labor cost.

State unemployment insurance (SUTA)

New-employer rate 1.00% to 2.00% by industry (plus 0.18% admin fee); experience-rated range 0.00% to 6.12%; 2026 taxable wage base $47,300.

Montana assigns new-employer unemployment insurance rates by industry classification rather than a single flat rate: construction and unclassified employers pay 2.00%, agriculture/forestry pay 1.30%, services pay 1.10% and agriculture, mining, manufacturing, utilities, wholesale and retail trade pay 1.00%. All new employers additionally pay a 0.18% administrative fund tax on top of the industry rate. Established employers with positive reserve accounts range from 0.00% to 3.42%; employers with deficit (negative) reserve accounts range from 2.72% to 6.12%. The 2026 taxable wage base is $47,300 per employee, set at 80% of the 2024 average annual wage in Montana ($59,106.64), rounded to the nearest $100.

Citation: Montana Unemployment Insurance Division, Schedule of Contribution Rates and Rate Explanation (2026)

Source: https://uid.dli.mt.gov/employers/schedule-of-contribution-rates

Last checked: 2026-08-26

Construction and unclassified employers pay the top new-employer rate of 2.00% before the administrative fund tax. Sources differ on whether the published new-employer range includes that 0.18% fee, so read your rate notice for the combined figure. Montana resets the schedule and wage base annually.

Workers' compensation rating

NCCI advisory rating state; workers' comp insurance is written by private carriers and the competitive (non-monopolistic) Montana State Fund, using NCCI class codes.

Montana is an NCCI (National Council on Compensation Insurance) advisory state. Montana State Fund, the state-created workers' compensation insurer, explicitly follows the Montana classification system published by NCCI for its class codes and rating. Montana State Fund competes with private insurance carriers in the open market rather than operating as the employer's exclusive, sole source of coverage, so Montana is not a monopolistic state.

Citation: Montana State Fund, Class Codes and Rates page; NCCI Proof of Coverage State Guide, Montana

Source: https://www.montanastatefund.com/web/home/work-comp/class-codes-and-rates.jsf

Prevailing wage law

Montana has its own Little Davis-Bacon law; it applies to state and local public works contracts of $25,000 or more.

Montana's Public Contracts / Prevailing Wage Law requires contractors and subcontractors on state, county, municipal, school district and other political-subdivision construction or nonconstruction service contracts to pay a set rate of compensation, including benefits, as established by the Department of Labor and Industry's Compliance and Investigations Bureau. It applies once the total contract cost reaches $25,000 or more and it separately requires at least 50% of each contractor's workforce on the job to be bona fide Montana residents. Employees in engineering, management and office roles are excluded, as are contracts limited to purchasing goods from commercial suppliers.

Citation: Mont. Code Ann. Title 18, Chapter 2, Part 4 (Public Contracts, Prevailing Wage Law); Montana DLI, Public Contracts/Prevailing Wage Law page

Source: https://erd.dli.mt.gov/labor-standards/public-contracts-prevailing-wage-law/

Construction Site Injury & Third-Party Liability in Montana

OSHA enforcement structure, how much weight an OSHA violation carries in a negligence case and whether an injured worker's own employer can be pulled back in.

Comparative / contributory negligence rule

Modified comparative fault, recovery barred above 50% fault (51% bar)

Recovery is reduced in proportion to fault and barred once the worker is more than 50% at fault. A worker exactly 50% at fault still recovers half.

Citation: Mont. Code Ann. § 27-1-702 (temporary version currently in force); § 27-1-703(4), (6)(c) (who may be compared)

Source: https://mca.legmt.gov/bills/2015/mca/27/1/27-1-702.htm

Verified against: statute text of Mont. Code Ann. ss 27-1-702 and 27-1-703 at mca.legmt.gov

Montana compares the worker against the combined negligence of the parties sued and bars only where the worker's share is greater. An even split recovers.

Montana forbids apportioning any fault to an immune employer and says so expressly. s 27-1-703(6)(c): 'Except for persons who have settled with or have been released by the claimant, comparison of fault with any of the following persons is PROHIBITED: (i) a person who is IMMUNE FROM LIABILITY to the claimant; (ii) a person who is not subject to the jurisdiction of the court; or (iii) any other person who could have been, but was not, named as a third party.'

On a construction site that removes the empty chair. An employer immune under workers' compensation cannot be put on the verdict form and neither can an absent subcontractor the defendant chose not to join. Under s 27-1-703(4) the fault is apportioned among the claimant, the defendants and any third-party defendants actually joined and nobody else. A defendant who wants a share allocated elsewhere has to join that person as a party.

This is the opposite of Louisiana, which names the workers' compensation exclusivity provision by section number and counts the immune employer's share and of Utah, Wyoming and Ohio, which all count non-parties. Same 'modified comparative fault' label, opposite mechanics.

One trap in the section itself. The comparative negligence provision on the books is headed (Temporary) and terminates on a contingency under sec. 11(2), Ch. 429, L. 1997. A second version, headed 'Comparative fault' rather than 'Comparative negligence', is printed below it and takes effect if that contingency occurs. Check which version you are reading. The temporary version is the one applied here.

Non-economic damages cap

No general cap on non-economic damages

Most states cap non-economic damages only in medical malpractice actions, which does not reach a third-party construction claim. Economic losses, medical bills, lost wages, future earning capacity, are not capped by these statutes.

OSHA plan

Federal OSHA (no state plan)

Montana has no OSHA-approved state plan; both public and private employers fall under federal OSHA jurisdiction. Under federal jurisdiction the citation is issued by an OSHA area office and contested before the federal Occupational Safety and Health Review Commission. Federal OSHA does not cover state and local government employees, so a public employee injured on a public job falls outside it. Reporting deadlines are a work-related fatality within 8 hours, an inpatient hospitalisation, amputation or loss of an eye within 24 hours. For a construction claim the inspection file matters more than the citation: photographs, measurements, witness statements and the inspector's narrative are usually obtainable and are often the best contemporaneous record of the site.

Citation: 29 U.S.C. § 667 (State Plan roster)

Source: https://www.osha.gov/stateplans

Weight of an OSHA violation in a negligence case

Montana is one of the minority of states whose high court accepts negligence per se for an OSHA violation

The Montana Supreme Court held that, although the OSH Act does not create a private right of action, OSHA violations can serve as the basis for a negligence per se claim; placing Montana among a minority of states willing to treat an OSHA violation as establishing breach of duty as a matter of law, rather than merely as evidence for the jury to weigh.

Citation: Trankel v. Department of Military Affairs, 938 P.2d 614, 625 (Mont. 1997)

Source: https://storage.googleapis.com/jnl-bcls-j-bclr-files/journals/1/articles/232/63a30c0a100a2.pdf

Third-party contribution against the employer

Statutory employer and co-employee questions are live in Montana. Third-party claims otherwise turn on premises control, retained control, negligent undertaking and product liability.

Limberhand v. Big Ditch Co. is Montana's foundational premises decision. It abolished the invitee, licensee and trespasser categories and set the landowner's duty as ordinary care in the circumstances. The facts are not construction, but the duty framework governs construction site claims.

Citation: Mont. Code §§39-71-101 et seq.; Limberhand v. Big Ditch Co., 218 Mont. 132, 706 P.2d 491 (1985).

Source: https://www.leagle.com/decision/19851197706p2d49111189

Injury-severity gate on contribution claims

Narrow specific-intent-to-injure exception; Montana has repeatedly declined to adopt the more lenient 'substantial certainty' doctrine used in many other states.

Great Western Sugar Co. v. District Court held that the exclusive remedy rule is not avoided unless the person injuring the employee specifically intended to do so , allegations of negligence, however wanton, are not enough. The Montana Supreme Court reaffirmed this in a later case (Noonan), acknowledging a hazardous workplace but still declining to adopt the substantial-certainty doctrine used elsewhere. In practice exclusivity takes the direct employer off the tort table entirely, whatever the OSHA file shows. The claim runs against the other parties on the site: the general contractor, the owner, another subcontractor, an equipment manufacturer. The employer or its carrier then asserts a lien against whatever the worker recovers from those parties, so the figure the worker actually keeps is the recovery less the lien, the fee and the costs. Whether the lien is reduced for the cost of obtaining the recovery is a separate state question worth asking early, because it moves the net more than most people expect.

Citation: Mont. Code § 39-71-101 et seq.; Great Western Sugar Co. v. District Court, 188 Mont. 1, 610 P.2d 717 (1980).

Source: https://archive.legmt.gov/content/publications/research/past_interim/wc-ex.pdf

Distinctive state doctrine

A general contractor that pays compensation for an uninsured subcontractor's injured worker does not get immunity in exchange and the intentional-harm exception requires specific intent

Montana requires an employer who contracts with an independent contractor for work that is a regular or recurrent part of the employer's own business to pay workers' comp to the subcontractor's employees if the subcontractor lacked its own coverage, but that paying employer/GC is not thereby entitled to exclusive-remedy immunity; only the actual immediate employer who provided coverage gets that protection. On the intentional-harm exception: Great Western Sugar Co. v. District Court, 188 Mont. 1, 610 P.2d 717 (1980), held that allegations of negligence, no matter how wanton, are insufficient to avoid exclusivity, requiring harm 'maliciously and specifically directed at an employee.' Three years later, Millers Mutual Ins. Co. v. Strainer, 204 Mont. 162, 663 P.2d 338 (1983), held the intentional-injury statute (Mont. Code Ann. section 39-71-413) 'refers to an intentional act without regard to intending the results of the act,' a real loosening of the standard. In 1985, Noonan v. Spring Creek Forest Products, Inc., 216 Mont. 221, 700 P.2d 623 (1985), 'ignored its holding in Millers Mutual and returned to its holding in Great Western Sugar,' declining to adopt the minority 'substantial certainty' doctrine even on facts the Court itself found troubling (a hazardous workplace with an unusual number of injuries). Sitzman v. Schumaker, 221 Mont. 304, 718 P.2d 657 (1986), then applied the strict rule successfully on true assault-and-battery facts. Blythe v. Radiometer America, Inc., 262 Mont. 464, 866 P.2d 218 (1993), reaffirmed the same Great Western Sugar/Noonan line (not a departure from it), while a dissent argued Millers Mutual had been the better-reasoned decision. Schmidt v. State, 286 Mont. 98, 951 P.2d 23 (1997), reaffirmed the strict rule once more, holding that a supervisor ordering an employee to use an unsafe tractor, even in violation of the Montana Safety Act, was negligence, not the specific intent required to pierce exclusivity.

Citation: Great Western Sugar Co. v. District Court, 188 Mont. 1, 610 P.2d 717 (1980); Millers Mutual Ins. Co. v. Strainer, 204 Mont. 162, 663 P.2d 338 (1983); Noonan v. Spring Creek Forest Products, Inc., 216 Mont. 221, 700 P.2d 623 (1985); Sitzman v. Schumaker, 221 Mont. 304, 718 P.2d 657 (1986); Blythe v. Radiometer America, Inc., 262 Mont. 464, 866 P.2d 218 (1993); Schmidt v. State, 286 Mont. 98, 951 P.2d 23 (1997); Mont. Code Ann. section 39-71-413.

Source: https://archive.legmt.gov/content/publications/research/past_interim/wc-ex.pdf

The point that a paying general contractor gets no immunity is not settled here against the statute. Check Mont. Code Ann. § 39-8-207 before relying on it. The case sequence below comes from a Montana Legislature research memo with reporter citations.

Put these Montana rules to work on your own numbers

ClaimDuke's calculators compute delay and extended overhead (Eichleay), fully burdened labor rates, ACV/RCV property loss, claim interest and construction-injury settlement ranges. Every calculation is free and live; a documented, citation-backed report is $19.

This page is reference information for your own verification. It is not legal advice and is not a substitute for confirming the current rule with the official source linked above or with counsel. Several states' interest rates float and reset on a schedule (monthly, quarterly or annually), so always check the live source for the figure as of today rather than relying on what is shown here. Which rule actually applies to your specific claim is itself a legal question this page cannot answer for you.