Michigan’s WDCA keeps employer duties simple: report qualifying injuries on Form WC-100, know the 90-day notice rule, and keep coverage verifiable. Here’s the official map.

Official Michigan resources

• MI Workers’ Disability Compensation Agency — the state agency (LEO)
• Verify an employer’s coverage — Michigan’s official coverage lookup
• Official forms — the WDCA forms library
• CAOM — Michigan’s rating organization (class codes, pure premiums)

Key employer forms

Michigan’s core employer form is WC-100, the Employer’s Basic Report of Injury — required when a work-related disability lasts longer than one week. The WDCA forms library covers the rest: wage records, disputes, and medical filings.

What to do when an employee is injured

1. Get the employee medical care — after 28 days of treatment, the employee may switch physicians with notice
2. Notify your carrier immediately
3. File Form WC-100 with the WDCA if the disability lasts longer than one week
4. Document the incident thoroughly, including witnesses
5. Verify subcontractor coverage through the state’s lookup before work starts

Deadlines that matter

Employees must give notice within 90 days; claims must generally be brought within two years of the injury (late filings limit retroactive benefits to two years prior). Employers file WC-100 when disability exceeds one week.

For rate context, see Michigan workers’ comp rates, or start with our full Michigan coverage guide. Need proof of coverage for a contract? We issue same-day certificates.

Michigan forms FAQs

What is Form WC-100 in Michigan?

The Employer’s Basic Report of Injury — filed with the Workers’ Disability Compensation Agency whenever a work-related disability lasts longer than one week.

How do I verify workers’ comp coverage for a Michigan business?

Use the state’s official Insurance Coverage Lookup (WORCS system) — free, searchable by employer name.

How long does a Michigan worker have to report an injury?

Statute requires notice to the employer within 90 days, and claims generally must be brought within two years of injury or manifestation.