Workers' Comp Insurance for Construction Businesses in Montana

Construction is one of the most heavily regulated and highest-rate industries for workers' compensation. Class codes vary widely depending on the type of work — residential carpentry, commercial framing, masonry, and concrete each carry different rates. Many states require coverage starting at one employee for construction, even when other industries are exempt below 3-5 employees in Montana. The Montana workers' compensation market is governed by NCCI, and the average rate statewide is approximately $1.66 per $100 of payroll.

Avg Construction rate in MT
$15.43
per $100 payroll
$100K payroll → annual
$15,435
estimated annual premium
Montana bureau
NCCI
Private market

Montana requirements for construction businesses

When required: Required for any employer with at least one employee.

Sole proprietors: Sole proprietors are exempt unless they elect.

Owner / officer exclusion: Officers and LLC members may be excluded.

Construction class codes used in Montana

Why construction workers' comp is tricky in Montana

Construction class codes are routinely misclassified — operations often span multiple codes, and carriers frequently default to the highest-rated code for an entire payroll instead of properly splitting it. Florida and California have especially strict rules for construction sole proprietors. We do free policy reviews to ensure your codes and split are correct.

Tips for Montana construction businesses

  • Get a Certificate of Insurance (COI) issued the same day for new job sites
  • Maintain a clean experience mod by tracking near-misses and safety meetings
  • Use ghost policies (where allowed) for sole-prop construction owners with no employees
  • Verify all subcontractors carry their own coverage to avoid being charged on their payroll
  • Audit your annual payroll declaration carefully — overstated payroll = overpaid premium

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Construction workers' comp in other states

Rates and requirements for construction businesses vary widely by state. Compare Montana to other major markets:

Other industries in Montana

Montana workers' comp rates and requirements for other common industries:

More Montana workers' comp resources