Michigan Contractor Insurance Requirements: Minimum Coverage Guide (2026)

General Liability Insurance Requirements in Michigan

General Liability contractor insurance requirements in Michigan are established by the Michigan Department of Licensing and Regulatory Affairs. While insurance isn't mandated by a single overarching state statute for all businesses, Michigan Department of Licensing and Regulatory Affairs requires active policies for all licensed contractors. The Michigan Department of Licensing and Regulatory Affairs requires licensed contractors to carry GL coverage as a condition of licensure, and the practical standard across Michigan's commercial market is $1M per occurrence. Detroit area commercial project owners and GCs require this level of coverage as a standard contract requirement, and contractors working on larger commercial or industrial projects in Michigan should verify specific contract insurance requirements rather than assuming their standard policy is sufficient.

Michigan's residential construction market is active across both urban and rural areas, and homeowners increasingly require proof of GL on residential renovation and construction projects. Specialty trade contractors including electricians and plumbers are licensed through LARA with their own insurance requirements that differ from general contractor licensing.

For context on how Michigan compares to neighboring states, see our guides on the minimum insurance requirements in Ohio and Indiana.

Workers' Compensation Requirements in Michigan

According to the Michigan Bureau of Workers' Compensation (https://www.michigan.gov/leo/bureaus-agencies/bwc), Michigan requires employers to carry workers' compensation coverage if they have three or more employees at any one time, or if they employ any individual worker for 35 or more hours per week for 13 or more consecutive weeks. This dual threshold is more complex than most states and creates compliance uncertainty for small contractors with variable workforce sizes.

What triggers coverage:

Three or more employees at any one time triggers mandatory WC. Alternatively, one employee working 35 or more hours per week for 13 or more consecutive weeks also triggers coverage. A contractor who has two regular full-time workers and brings on a third worker for a single job has crossed the three-employee threshold on that job, even if the third worker is temporary.

Sole proprietors and independent contractors:

Sole proprietors are excluded from mandatory WC in Michigan. Michigan's exclusive remedy rule limits an employee's ability to sue their employer in civil court for work-related injuries, which is a meaningful legal protection for Michigan employers who carry WC coverage.

Penalties for non-compliance:

Michigan enforces WC requirements through the Bureau of Workers' Compensation. Employers operating without required coverage face stop-work orders, civil penalties, and personal liability for employee injuries. Michigan's exclusive remedy protection only applies to employers who carry valid WC coverage. Non-compliant employers lose this protection entirely.

Michigan-Specific Rules That Catch Contractors Off Guard

Michigan's "regularly employed" threshold is one of the most misunderstood WC triggers in the Midwest. The three-employee headcount threshold applies to employees present at any one time, not to your average or typical workforce size. A contractor who normally runs with two workers but brings on a third for a specific project has crossed the mandatory WC threshold for the duration of that project. Many small Michigan contractors fluctuate around the threshold without tracking it carefully, creating periods of non-compliance they are not aware of.

The 35-hour, 13-week threshold is a separate trigger that catches contractors who have a single dedicated full-time worker. One employee working full-time hours for a quarter of the year triggers mandatory WC in Michigan regardless of whether the three-employee threshold is ever crossed. This means that Michigan contractors who have even one steady full-time worker on payroll for more than three months must carry WC.

Michigan's exclusive remedy rule is a meaningful benefit for compliant employers. If you carry valid WC coverage, your employees generally cannot sue you in civil court for work-related injuries beyond the WC claim. This protection disappears entirely if you are operating without required coverage, which significantly increases your civil liability exposure for any workplace injury.

Michigan's construction industry has specific licensing requirements through LARA, and license renewal is tied to continuing education compliance. Insurance must remain active throughout the license period, and a lapse can affect your ability to pull permits on active projects.

How These Requirements Affect Your Trade in Michigan

General Contractors and Construction Companies

Michigan GCs need to track their workforce size carefully relative to the three-employee threshold, particularly during busy seasons when temporary and seasonal workers are common. The threshold applies at any point in time, not as an average, which means a GC who brings on a third worker for a single week has WC obligations for that week. Certificate management for subcontractors should include verification of WC coverage status for any sub that exceeds Michigan's thresholds.

Roofers

Michigan roofing contractors deal with a demanding Great Lakes climate that includes significant snow load, ice dam, and wind exposure. The state's four-season weather creates consistent storm repair demand alongside new construction work. Ice dam-related water damage is a significant completed operations claim driver in Michigan, and roofing contractors should verify that their GL policy addresses winter weather-related failures specifically.

Electricians

Michigan electricians are licensed through LARA with specific insurance and continuing education requirements. The Detroit metro's ongoing urban redevelopment and the state's growing EV manufacturing sector have created significant commercial and industrial electrical work opportunities. Industrial and manufacturing facility electrical work carries higher GL exposure than standard residential work, and contractors entering this segment should verify their coverage limits are adequate.

HVAC Contractors

Michigan's cold winters create significant heating system demand and completed operations exposure. HVAC failures during Michigan winters can cause rapid property damage through frozen pipes and related water damage, and the resulting claims can be substantial. Make sure your completed operations coverage reflects the climate-specific risks of HVAC work in Michigan's heating season.

Independent Contractors

Michigan's complex WC threshold means that independent contractors who bring on even temporary help need to track their workforce size carefully. Crossing the three-employee threshold even temporarily triggers WC obligations. Independent contractors in Michigan should maintain their own business entity and carry GL and WC to clearly establish their independent status and manage their own compliance obligations.

Surety Bonds in Michigan

Michigan requires surety bonds for certain contractor license classifications through LARA, with bond amounts varying by license type. Local licensing authorities in Detroit and other municipalities may have additional bonding requirements. Specialty trade licensing boards may have separate bond requirements for electricians and plumbers. 

For everything you need to know about contractor surety bonds, check out our complete surety bonds guide.