For claim services:


To report a workers’ compensation claim use one of the following methods to contact Tristar:

  • Mail to TRISTAR promptly but no later than five days after your knowledge of the injury
  • Fax: (562) 427-0164
  • 24-hour reporting phone number: (877) 556-5338
  • Email to


To report all other claims please contact The Hanover by:

Phone: 1-877-602-7267
Fax: 1-989-775-0835

Physical Address:
3700 East River Road
Mount Pleasant, MI 48858

Mailing Address
(including Payments):
P.O. Box 1905
Mount Pleasant, MI 48804-1905

Endorsed by: