Michigan Workers' Comp: When It's Required, What It Costs, How It Works

Workers’ compensation in Michigan is one of those topics that sneaks up on small business owners. You hire your first employee, then your second, and suddenly you’re legally required to carry a policy you never shopped for. Here’s what you actually need to know.

When Michigan requires workers’ comp

Michigan’s Workers’ Disability Compensation Act requires most employers to carry workers’ comp. The triggers:

• 3 or more employees at any one time, OR
• 1 or more employees working 35+ hours per week for 13+ weeks in a year

If you meet either of those, coverage is required. The thresholds aren’t “either/or” for optionality — they’re triggers. Hit one, you need comp.

A few things that are easier to misunderstand than they look:

• Family members count as employees in most cases (with some narrow exceptions for spouses, parents, and children of sole proprietors — the rules are specific).
• Corporate officers can sometimes be excluded with a formal election; LLC members usually can’t.
• 1099 contractors don’t count — if they’re genuinely contractors. If you’re calling someone a 1099 contractor but they work for you full-time with equipment you provide and direction you give, Michigan’s workers’ comp agency may reclassify them, and you’ll owe back premium plus penalties.

What workers’ comp covers

Workers’ comp is a no-fault system. If an employee is injured in the course of work:

• Medical bills — 100% covered, no deductibles or copays for the employee
• Wage replacement — roughly 80% of after-tax wages while they can’t work
• Permanent disability benefits — if the injury is permanent
• Death benefits — if the injury is fatal, paid to surviving dependents
• Vocational rehabilitation — if the employee can’t return to their old job

In exchange, employees give up the right to sue the employer for the injury. This is called the “exclusive remedy” and it’s the whole point of the system: predictable coverage for employees, protection from lawsuits for employers.

What it costs

Workers’ comp is priced by class code — basically, a numerical classification of the work being done. A clerical worker at a desk might have a rate of $0.20 per $100 of payroll. A roofer might be $20+ per $100 of payroll. That’s a 100x difference.

Typical Michigan rates by industry:

• Office / clerical: $0.15–$0.30 per $100 payroll
• Retail / restaurant: $1.50–$3.50 per $100
• Light manufacturing: $2.00–$4.50 per $100
• General construction / contractors: $4.00–$15.00 per $100
• Roofers: $15.00–$30.00+ per $100
• Tree service: $10.00–$25.00+ per $100

On a small contractor with $150K in payroll in a mid-rate class, annual comp premium might be $6,000–$9,000. For an office-based business with the same payroll, maybe $300–$500.

The experience modifier (your “mod”)

After about three years in business, Michigan carriers start assigning you an experience modification factor — your “mod.” It compares your actual claims history against the expected average for your class.

• Mod of 1.00 — you’re average
• Mod below 1.00 — you have fewer/smaller claims than average. You pay less than base rate.
• Mod above 1.00 — you have more claims than average. You pay more than base rate.

A good mod is one of the biggest cost levers in workers’ comp. Claims management, return-to-work programs, and workplace safety directly affect your mod, which affects your premium for years.

Common mistakes

Misclassifying employees as contractors — already mentioned, but it’s the #1 way small businesses get in trouble. If the state agency decides a 1099 was really a W-2, you owe back premium plus penalties.

Not reporting a new hire to your insurer — most comp policies are “audit” policies, meaning premium is trued up at year-end based on actual payroll. But you should still notify your agent when you add significant payroll mid-year.

Using ghost policies when you have employees — a “ghost policy” is a workers’ comp policy that covers only the owner (or no one), typically used by solo contractors who need a certificate of insurance to get onto a job site. If you add employees and keep the ghost policy, you’re unlicensed and uninsured.

Ignoring claims — if an employee is injured, report the claim immediately, even if you’re hoping to pay it out of pocket. Delayed reporting makes claims more expensive and can violate the policy.

Assuming health insurance covers work injuries — health insurance typically excludes work-related injuries. If an employee’s on-the-job injury hits their health insurance, the carrier will deny the claim and try to recover from workers’ comp retroactively.

What to do if you’re about to hire your first employee

1. Get a workers’ comp quote before the employee starts, not after. We can usually quote in 24–48 hours.
2. Understand your class code. If your work is classified incorrectly, you’re paying the wrong rate — sometimes wildly.
3. Make sure the policy is effective on or before the hire date. Uninsured periods with a claim are catastrophic.
4. Set up a return-to-work plan in advance. Even light-duty options help keep claim costs — and your future mod — low.

If you’re in Lapeer County and about to cross into employer territory, give us a call or text. We’ll quote the policy, explain the class code, and set expectations on what it’ll actually cost over the first few years.