When repairs are complete, Michigan
law requires you to provide customers a final
invoice that lists the prices for parts and labor,
the parts that were installed, and tells whether
the parts were new, used or rebuilt.
The invoice must also include the name
and certification number of each mechanic
who worked on the vehicle or who inspected
and approved repairs to the vehicle.
The invoice must be signed by the owner
or someone authorized by the owner to certify
that repairs were done properly