Mich. Comp. Laws § 730.268

Sec. 18. Any person who shall fail to attend and continue in attendance at the justice court room in the city as a juror for the term for which he or she shall have been selected and duly summoned, as herein provided, without the consent of the justice presiding on that particular day or that particular term, shall be punished by a fine of not more than $100.00, or by imprisonment for not more than 90 days, or both.