Mich. Comp. Laws § 338.3633b: Participant license.

Sec. 33b.

(1) An individual shall not participate in a contest or event as a referee, judge, matchmaker, or timekeeper without a participant license from the department under this section. To obtain a participant license, an applicant must submit all of the following to the department:

(a) An application. The department may prescribe the form and the contents of the application form.

(b) With the application described in subdivision (a), a nonrefundable application processing fee in the amount of $30.00 and 1 of the following annual license fees, as applicable:

( i ) Referee license, $150.00.

( ii ) Judge license, $70.00.

( iii ) Matchmaker license, $150.00.

( iv ) Timekeeper license, $70.00.

(2) An applicant for a referee, judge, matchmaker, or timekeeper participant license must demonstrate to the satisfaction of the department that he or she meets all of the following to receive a license under this section:

(a) Has good moral character.

(b) Is at least 18 years of age.

(c) Any other requirement established by rule.