The Hartford and Your California Workers' Comp Claim

What Is The Hartford's Role in a California Workers' Comp Claim?

The Hartford underwrites workers' compensation insurance and sells it to employers across California. It pays the benefits on those policies. It is not a government office or your employer.

The Hartford and Yazdchi Law P.C. have no connection to one another. Here is what The Hartford is, how to actually reach someone there about a claim, and which California rules hold regardless of who the insurer turns out to be.

The Hartford's own site, visited November 7, 2026, markets workers' compensation insurance nationwide, with a page for California workers' compensation insurance. That page says California requires this coverage for any employer with at least one employee. It says the policy pays for an injured worker's medical care, disability payments, and related benefits. The Hartford is the carrier itself: the company that pays the claim, not a separate firm hired just to process paperwork.

California law calls whoever runs a claim the "claims administrator" (Title 8, section 9811). For an insurer like The Hartford that handles its own claims, the insurer itself fills that role. The phone line and portal in the next section both run on The Hartford's own domain, not a separate company's.

The Hartford is only one of many companies doing this work in California. State Compensation Insurance Fund and various third-party administrators handle other employers' claims. No matter which company is involved, the same state rules apply.

How Do I Contact The Hartford About a Claim?

The employer reports a new claim to The Hartford. An injured worker with an open file instead uses a separate sign-in portal or a 24-hour phone line.

On its claims page, checked November 7, 2026, The Hartford lists a toll-free number for workers' comp help, 800-327-3636, answered 24 hours a day. The same page sends an injured worker who needs claim support to a portal it calls My Workers' Comp Connection.

Opening the claim is the employer's job, not the worker's. Once an employer learns of a work injury that causes missed time or needs care beyond first aid, it must get a claim form into the worker's hands within one working day (Labor Code section 5401; our DWC-1 claim form page covers what belongs on it). The employer then sends that form to The Hartford, which opens the claim file.

One detail is specific to California: a medical or prescription bill a worker already paid goes to a different mailing address than most other states use. California is grouped with Texas, Florida, and New Jersey (The Hartford, PO Box 14187, Lexington, KY 40512, fax 859-258-2239). Send a copy of the bill, proof of payment, and the claim number.

How Long Does The Hartford Have to Accept or Deny My Claim?

California gives an insurer 90 days from the claim form's filing date to accept or deny the claim. Limited medical care must start well before that decision is made.

Filing the claim form starts a 90-day countdown (Labor Code section 5402). If The Hartford has not rejected liability by the end of that period, the law treats the injury as covered. Only new evidence found afterward can undo that result. The same rule has an immediate side effect: starting the day after filing, up to $10,000 of care must be authorized even before a final decision is made.

A separate rule controls the review itself. For a self-administered insurer like The Hartford, the claims administrator is the insurer itself, and it must run a reasonable, timely investigation (Title 8, section 10109) aimed at finding what benefits are owed, not building a defense. Title 8, section 9812 sets written notices the worker is owed along the way, including notice that a decision is running late.

What Happens to My Paycheck if I'm Hurt and Can't Work?

If the injury keeps a worker off the job, a disability check must reach the worker within 14 days of the employer's notice of the injury and lost time. A late payment carries an automatic increase.

That 14-day window comes from Labor Code section 4650. The clock starts when the employer has notice of the injury and the missed time, not whatever later date The Hartford opens its file. Miss that date, and the law adds a 10 percent increase automatically. The worker does not have to ask for it.

A payment that The Hartford unreasonably delays or refuses outright, rather than one that is simply a few days late, triggers a bigger, separate penalty under Labor Code section 5814, worth as much as 25 percent of the withheld amount, or $10,000, whichever figure is smaller. These rules apply to The Hartford the same as any other insurer.

Step	Deadline	Law
Report injury to your employer	Within 30 days	Labor Code 5400
File your workers' comp claim	Within 1 year	Labor Code 5405
Insurer must accept or deny	Within 90 days	Labor Code 5402
First disability check	Within 14 days	Labor Code 4650
Appeal a denied treatment	Within 30 days	Labor Code 4610.5

Can The Hartford Change or Deny My Doctor's Treatment Plan?

A treating doctor's request can be reviewed, and sometimes changed or denied, through utilization review. A further appeal is available through independent medical review.

A claims administrator may review a treatment request for medical necessity before, during, or shortly after care is given (Labor Code section 4610). This screening step is called utilization review. When it denies or changes what a doctor asked for, Labor Code section 4610.5 gives the worker a path to an independent medical review, or IMR.

IMR puts the final call in the hands of a doctor with no connection to The Hartford, who looks only at the medical record. Our page on independent medical review under Labor Code 4610.5 covers the request form and deadlines.

What If The Hartford Denies the Claim Entirely?

A full denial, or a dispute over how serious an injury is, goes before a workers' compensation judge, not through utilization review. Free help is available from the state at any point.

Some disputes are not about one treatment request. A workers' compensation judge decides the bigger disputes instead, such as whether the claim qualifies as a work injury to begin with, or what a worker's permanent disability rating should come out to. To put that dispute in front of a judge, the worker or an attorney submits an Application for Adjudication of Claim to the WCAB. The judge's decision is not final either: either side can file a petition asking the appeals board to revisit the ruling.

Free help is also available at 1-800-736-7401, the DWC's Information and Assistance Unit, which has no tie to The Hartford or any other insurer and answers questions about any California claim. For the full set of options after a denial, see our denied claim page.

When Should You Call a Lawyer About This Claim?

Plenty of claims move through an insurer with no real fight. A lawyer tends to matter once a claim is denied, a payment stalls, or a permanent disability rating is on the table.

A claim with no disagreement usually does not need a lawyer. Legal help matters more once something goes wrong: a denied claim, a payment that has stopped, a disagreement over medical treatment, or uncertainty about what a settlement should include. The firm looks at the facts of each case before deciding whether to take it, and it does not accept every matter.

California law, not the attorney, sets the fee. It usually runs 15% to 18% of the award, fixed by Labor Code section 4906. A workers' compensation judge has the final word on any settlement before it takes effect. Our workers' comp attorney cost page covers how that approval works.

Yazdchi Law P.C. is an independent firm with no connection to The Hartford and no role in how the company handles claims. The firm decides whether to accept a case only after reviewing its facts, the same way it would for any other insurer's claim.

Call (661) 273-1780 or use the contact form. Let us know which insurance company is involved and briefly where the claim stands.

Keep Reading

More on how a California claim moves forward, what a denial means, and what legal help costs is linked below.

• What are the steps in a California workers' comp claim?
• What are your options after a California workers' comp denial?
• Is a State Fund claim handled differently than a Hartford claim?
• See the attorney fee rules for California workers' comp cases