Mich. Comp. Laws § 691.1666

Sec. 6. (1) An equine professional shall post and maintain signs that contain the warning notice set forth in subsection (3). The signs shall be placed in a clearly visible location in close proximity to the equine activity. The warning notice shall appear on the sign in conspicuous letters no less than 1 inch in height. (2) A written contract entered into by an equine professional for providing professional services, instruction, or rental of equipment, tack, or an equine to a participant, whether or not the contract involves an equine activity on or off the location or site of the equine professional's business, shall contain in clearly readable print the warning notice set forth in subsection (3). (3) A sign or contract described in this section shall contain substantially the following warning notice: WARNING Under the Michigan equine activity liability act, an equine professional is not liable for an injury to or the death of a participant in an equine activity resulting from an inherent risk of the equine activity.