​Contact Workers Compensation Assigned Risk

Our dedicated Assigned Risk Customer Service Center can be reached by phone at 1-800-653-7893 or via email at IMS@LibertyMutual.com. The center is staffed with professionals who are available Monday through Friday, 7 a.m. to 7 p.m. (CT) and can answer your questions related to:

  • General inquiries regarding your coverage
  • Policy review
  • Billing inquiries
  • Mail form inquiries
  • Certificates of insurance, if you don't have agent
  • Coverage in other states, if you don't have agent
  • Additional coverage needs

Contact your agent if you need:

  • Certificates of insurance
  • Coverage in additional states

​Report a claim:

Small Business Customers
Phone: 1-844-325-2467 (844-3-CLAIMS)
Email: businesslinesclaims@libertymutual.com

Mid/Large Business Customers
Phone: 1-800-362-0000
Email: clclaimreports@libertymutual.com

​Have a safety & health questions?

Phone:  1-866-757-7324
Email:  RCConsultingCenter@LibertyMutual.com

​Physical Audit inquiries:

Phone:  1-800-231-3484
Fax:  1-866-809-7806
Email:  AuditOpsIMO@LibertyMutual.com


Please submit payments to one of the addresses below, according to your state.

AL, CT, DC, DE, FL, GA, IA, IL, IN, KY, MA, MD, ME, MI, MN, MS, NC, ND, NE, NH, NJ, NY, OH, PA, RI, SC, SD, TN, VA, VT, WI, or WV

Standard Mail - Customer
Liberty Mutual Insurance
P.O. Box 2027
Keene, NH 03431-7027

Overnight Mail - Customer
Liberty Mutual Insurance
Attn: Payment Processing
62 Maple Avenue
Keene, NH 03431

Phone for overnight address location: 800-320-7582

AK, AR, AZ, CA, CO, HI, ID, KS, LA, MO, MT, NM, NV, OK, OR, TX, UT, WA, or WY

Standard Mail - Customer
Liberty Mutual Insurance
P.O. Box 85307
San Diego, CA 92186-5307

Overnight Mail - Customer
Liberty Mutual Insurance
Attn:  Payment Processing
1615 Murray Canyon Rd, Suite 300
San Diego, CA 92108-4329

Phone for overnight address location: 800-320-7582


Please address written correspondence to the address below:

Liberty Mutual Insurance
P.O. Box 8090
Wausau, WI 54402-8090



​Contact Us

For any questions, call the Assigned Risk Customer Service:
Monday through Friday
7 a.m. – 7 p.m. CST
Or email at IMS@LibertyMutual.com

​Assigned Risk Services Online Forms

​Contact assigned risk services through the forms listed below.

Need something not listed above?

Send us questions / comments

​Quick Links  

Assigned Risk Services
Learn more about the assigned risk market.

Customer Service
Learn more about the services available to you as an assigned risk customer. 

Frequently Asked Questions
Find answers to common questions about assigned risk policies.

eAudit at Liberty
Learn more about eAudit and how it can help make completing your yearly premium audit easier.

eAudit FAQs
Review these frequently asked questions to help you when using our new eAudit process.