“My claim is with Liberty Mutual. How do I reach my adjuster?”

Who Liberty Mutual is

A licensed workers’ comp insurer. The California Department of Insurance’s company profile lists Liberty Mutual Insurance Company with a license status of “Unlimited-Normal,” and workers’ compensation among its lines of business.

Check the exact name on your letters. When you write, use the insurer’s name exactly as your letters give it.

Liberty assigns a claims handler. Liberty’s workers’ compensation FAQ calls the person on your claim your claims handler, and describes that person as the one who evaluates the claim and explains your benefits.

What that means for your claim

Liberty Mutual is your employer’s insurer. The law lets an employer secure workers’ compensation by being insured by an insurer “duly authorized to write compensation insurance in this state.” The employer section of the DWCDWC Division of Workers’ Compensation, part of the Department of Industrial Relations. Administers the system. Information Services Center: 1-800-736-7401. 1 names the insurer or claims administratorClaims administrator / adjuster The person handling your claim for the insurer or self-insured employer.. The DWC 1, part by part

The deadlines are the Labor Code’s. The first temporary disabilityTD / TTD / TPD Temporary Disability, Total or Partial. Wage replacement while recovering. Two-thirds of average weekly earnings; 2026 maximum $1,764.11/week. payment within 14 days, up to $10,000 in treatment while the claim is decided, and the 90-day presumption apply to a Liberty Mutual claim as to any other. Every deadline in one place

Reaching your claims handler

Start with the claim number. It is on Liberty’s letters to you. Put it on everything you send.

Lost the contact information or the claim number? Liberty’s FAQ answers both questions the same way: call (800) 362-0000 for assistance.

Then put it in writing. A dated email or letter, saying what you need and by when, is the record every remedy for delay depends on. My adjuster won’t call me back

Which doctors: Liberty’s California MPN

DWC’s list of active MPNs, current as of July 8, 2026, shows the Liberty Mutual Group MPNMPN Medical Provider Network. Your employer’s list of physicians. After the first visit you may switch within it without permission. (MPN ID 2378), filed by Liberty Mutual Managed Care LLC. A California MPN information sheet posted on Liberty’s business site in March 2023 lists the same network among several.

Help finding a doctor. Under “How do I find a medical provider?”, Liberty’s FAQ gives (800) 944-0443 for California, among other states.

Your MPN notice says which network applies. When an injury is reported, the employer or its insurer must give you a complete written MPN employee notification, with the MPN’s identification number, a toll-free Medical Access Assistant number, and the web address of its roster of treating physicians. Your employer’s network may not be the one named above.

After the first visit you may switch to any other doctor in the network, without asking permission. How the MPN works

When nobody answers

Stop calling and write. Every remedy for delay depends on proof that you asked.

A late check is 10% more, automatically. A late indemnity payment is increased 10% and paid “without application.”

Unreasonable delay can cost more. The law allows up to 25% or up to $10,000, whichever is less, and the claim must be brought within two years of the date the payment was due. The 10% the law adds to a late check

The state’s help is free. Every DWC district office has an Information & Assistance officer who answers questions at no cost. Where the offices are