Mich. Admin. Code R. 408.42a
Rule 12a. If an insurance policy is issued to cover a specified construction site where the cost of the construction will be more than $65,000,000.00 and the contemplated completion period will be 5 years or less, then the insurers shall notify the agency on a form WC-400A, insurer's notice of issuance of specific risk policy, of the date upon which the employer became subject to the specific insurance policy. If the employer is a partnership, then the notice must state the names and addresses of all the partners. If the employer is doing business under an assumed name, then the notice must state the assumed name and the names of the parties doing business under the assumed name. If the employer is a corporation doing business through a number of divisions, then the notice must state the name of the employer and the divisions that are covered under the specific risk policy. The specific risk carrier shall notify the agency when the specific risk carrier receives a change of address for the employer.
Mich. Admin. Code R. 408.42a