Mich. Comp. Laws § 333.5601: “Occupational disease” defined; general definitions and principles of construction.

Sec. 5601.

As used in this part, "occupational disease" means an illness of the human body arising out of and in the course of an individual's employment and having 1 or more of the following characteristics:

It is caused by a frequently repeated or continuous exposure to a hazardous substance or agent or to a specific industrial practice which is hazardous and which has continued over an extended period of time.

It is caused by an acute exposure to a hazardous substance or agent.

It presents symptoms characteristic of an occupational disease known to have resulted in other cases from the same type of specific exposure.

In addition, article 1 contains general definitions and principles of construction applicable to all articles in this code and part 51 contains definitions applicable to this part.