Mich. Comp. Laws § 339.1811: Purchase of vault or similar receptacle as condition to burial prohibited; discrimination; right to require vault not impaired.

Sec. 1811.

The purchase of a vault or similar receptacle designed or intended to enclose or receive a casket, coffin, or other similar container from a particular individual, partnership, association, or corporation shall not be required as a condition to burial in a cemetery in this state. There shall not be a discrimination by price, burial fee, or otherwise by reason of a failure to purchase the vault or similar receptacle from or under the direction of the cemetery or the owner of the cemetery.

This section shall not limit the right of a cemetery to require the use of a vault in a burial in the cemetery.