Mich. Comp. Laws § 408.343

Sec. 23. (1) A skier involved in an accident causing an injury to another person shall to the extent that he or she is reasonably able to do so immediately notify the ski patrol or the operator, or law enforcement or emergency personnel, and shall clearly identify himself or herself. A skier who wilfully fails to give identification after involvement in a skiing accident with another person, or a skier who is reasonably able to do so who fails to notify the proper authorities or to obtain assistance when the skier knows that another person involved in the accident is in need of medical or other assistance, is guilty of a misdemeanor, punishable by imprisonment for not more than 30 days, or a fine of not more than $100.00, or both. (2) A skier involved in an accident causing an injury to himself or herself, but not to another person, shall immediately notify the ski patrol or the operator, or law enforcement or emergency personnel, if the accident created a known hazardous condition in the area where the accident occurred.