Montana Construction Compliance Requirements
Everything general contractors need to know about lien law, prevailing wage, insurance, and OSHA compliance in Montana.
Mechanics Lien Law
Montana mechanics liens must be filed within 90 days of completion under MCA 71-3-531 et seq. Subcontractors must provide a 20-day preliminary notice to the property owner. Montana lien law provides protections for both residential and commercial projects.
Key Deadlines
Prevailing Wage Requirements
Montana requires prevailing wages on public works projects over $25,000 under MCA 18-2-401 et seq. Montana Department of Labor and Industry sets rates. Certified payroll required on applicable projects.
Insurance Requirements
Workers compensation required for all employers with 1+ employees. Montana State Fund provides coverage options. Minimum $1M general liability typical. Plan 1, 2, or 3 options under Montana workers comp.
OSHA & Safety Compliance
Montana follows federal OSHA standards. No state OSHA plan. Montana Department of Labor and Industry provides safety consultation. Mining safety is a particular focus in Montana.
Automate Montana Compliance
Subcontractor Audit tracks MT-specific insurance requirements, lien waiver forms, and compliance deadlines automatically.
Start 14-Day Free TrialLast reviewed: April 2026. This guide is for informational purposes only and does not constitute legal advice. Consult a qualified attorney for state-specific legal questions.