Mich. Comp. Laws § 432.16

Sec. 16. (1) The commissioner shall conduct a study of compulsive gambling and the extent to which persons with compulsive gambling disorders participate in gambling activities. The commissioner shall submit a written summary of the findings of the study to the clerk of the house of representatives and the secretary of the senate not later than 1 year after the effective date of this section. (2) The toll-free compulsive gaming helpline number shall be printed on all lottery tickets, printed advertisements, and promotional materials and posted at each location where lottery tickets are sold.