Workers' Comp for Janitorial in Montana (2026)

How workers' comp works for janitorial in Montana

Montana has a distinctive WC market structure: Montana State Fund (MSF) — a nonprofit insurer originally created by the legislature as the state WC fund — is now the dominant private carrier, writing the majority of Montana WC policies. Private carriers also compete but hold a much smaller market share. The Employment Standards Division (ESD) of the Montana DLI administers claims enforcement; disputed claims go to the Workers' Compensation Court. Montana requires coverage for all employers with one or more employees. Montana's "prevailing factor" causation standard — the work injury must be more than 50% of the cause of the condition — is more difficult for workers to meet than the "arising out of" standard used by most states, which can reduce claim acceptance rates.

Class code and rate (2026)

• Code 9014 — Janitorial Srv, Mobile Pwr Pressure Cleaning/Exterminator/Waterproofing (MSF description). Montana State Fund uses a five-tier rate schedule based on employer loss history. For Policy Year 2026 (7/1/2025–6/30/2026):
  • Tier 1 (best loss history): $1.56/$100
  • Tier 2: $1.97/$100
  • Tier 3: $2.41/$100
  • Tier 4: $2.89/$100
  • Tier 5 (worst loss history): $3.49/$100
  New employers typically start at Tier 2 or 3. Private carriers apply NCCI class codes with their own rate schedules filed separately.
• Code 9170 — Janitorial with above-ground window cleaning. Separately rated; higher rate tier.

Indemnity benefits (Montana 2026)

• Max weekly TTD: $1,137 (per Montana DLI FY2026 WC Benefit Brochure at erd.dli.mt.gov; = 66.67% of AWW, capped at state maximum; effective for FY2026).
• Min weekly TTD: Montana does not publish a fixed statutory minimum floor in the FY2026 brochure; benefits equal 66.67% of actual AWW for low-wage workers (check with Montana ESD for current year minimum).
• Waiting period: compensation not paid for the first 32 hours or 4 calendar days of wage loss, whichever is less. Compensation begins on the 33rd hour or the 5th day. If disability is 21 days or longer, compensation is paid retroactively to the first day of total wage loss (Mont. Code Ann. §39-71-736). Montana's 4-day/32-hour waiting period is unique among the states in this batch.
• TTD duration: continues until MMI or return to work; maximum 400 weeks for most claims.
• Causation standard: the work injury must be the "prevailing factor" — more than 50% of the cause — of the medical condition (2005 reform; §39-71-119). This is higher than most states' "arising out of" standard.

Coverage thresholds and exemptions

• Mandatory for all employers with 1 or more employees; Mont. Code Ann. §39-71-401. Construction employers must cover all workers regardless of count. Non-construction employers with fewer than 5 employees may voluntarily elect; MSF and DLI guidance indicates all employers with employees (any number) must provide coverage.
• Exempt: domestic servants in a private home; certain real estate and insurance agents paid solely by commission; ordained ministers; volunteer workers for nonprofits (limited exceptions for certain public safety volunteers).
• Corporate officers may elect exclusion in writing; sole proprietors and partners are excluded by default but may elect coverage.
• Independent contractors may file an Independent Contractor Exemption Certificate (ICEC) through the DLI; without an ICEC, a contractor may be deemed an employee of the hiring employer.

Failure-to-insure penalty

Under Mont. Code Ann. §39-71-504, Montana imposes a multi-layer penalty on uninsured employers. The Uninsured Employers' Fund (UEF) may require the employer to pay: (1) up to double the premium the employer would have owed to the Montana State Fund for the uninsured period (minimum $200); (2) full reimbursement of all benefits paid by the UEF on behalf of injured employees; and (3) an additional $200 penalty for failing to obtain coverage within 30 days of notice. Late payments accrue $50 per payment plus 12% annual interest. Failure to insure is also a class A misdemeanor under Montana law, punishable by up to one year imprisonment and a $2,000 fine.

Cost drivers specific to janitorial in Montana

• Top injuries (BLS NAICS 561720): slips/falls, back/shoulder strains, chemical exposure — Montana's government, healthcare, and mining-sector facilities generate cleaning contracts; cold-weather slip-and-fall exposure is significant in winter months.
• Montana State Fund's tiered rate structure (Tier 1 $1.56 to Tier 5 $3.49/$100) creates a strong incentive for janitorial operators to maintain excellent loss records — moving from Tier 3 to Tier 1 on a $500,000 payroll saves approximately $4,250/year in premium.
• The "prevailing factor" causation standard reduces frivolous claims compared to states with a lower "contributing cause" standard, which can moderate loss experience over time.
• Bid-math note: at Tier 2–3 ($1.97–$2.41/$100), load WC at approximately 2.0–2.4% of gross wages in Montana bids. New operations should budget at Tier 3 until experience develops sufficient credits to qualify for Tier 2 or 1.

Primary sources

• Montana DLI — Employment Standards Division WC Resources
• Montana DLI — FY2026 WC Benefit Brochure (PDF)
• Montana State Fund — PY2026 Class Code Rates (PDF)
• Mont. Code Ann. §39-71-504 — Uninsured Employer Penalties (Justia)
• BLS NAICS 561720 Injury Data