Nearly all employers in Michigan are covered by workers' compensation. This includes both public and private employers. In fact, when talking about workers' compensation, it is easier to discuss the exceptions. There are a few classes of workers who are covered by federal laws and are not covered by the Workers' Disability Compensation Act of Michigan. Employees of the federal government (such as postal workers, employees at a veterans administration hospital, or members of the armed forces) are covered by federal laws. People who work on interstate railroads are covered by the Federal Employers Liability Act. Seamen on navigable waters are covered by the Merchant Marine Act of 1920, and people loading and unloading vessels are covered by the Longshoremen's and Harbor Workers' Compensation Act. Virtually all other workers and employers are subject to Michigan's law.

Certain very small employers are exempt. If a private employer has three or more employees at any one time, or employs one or more workers for 35 or more hours per week for 13 or more weeks, the employer is subject to the Workers' Disability Compensation Act. (Section 115)