Employees
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Workers' Compensation Benefit Checks

Contact the County's Third Party Administrator

The County contracts with third party administrators to administer workers' compensation claims. Each workers' compensation claimant is assigned a claims examiner who determines the appropriate amount of benefits to be paid to each claimant. In addition, the claims examiner uses the claims administration system to issue benefit checks, which are sent to claimants.

If you have questions regarding your workers' compensation benefit checks, please contact your third party administrator below. If you do not know your claim number, then please call (213) 351-5479 and provide your employee number.

Unit 1

York RiskServices

Unit A
P.O. Box 7052
Pasadena, CA 91109
Unit 2

York Risk Services

Unit B
P.O. Box 11028
Orange, CA 92856
Unit 3

Sedgwick Claims Management

Unit C
P.O. Box 51465
Ontario, CA 91761
Unit 4

Sedgwick Claims Management

Unit D
P.O. Box 51350
Ontario, CA 91761

Claim Number: Starts with "1000‑" or contains the letter "A"

Administrator: York

Telephone Number: (800) 782-5888


Claim Number: Starts with "2000‑" or contains the letter "B"

Administrator: Tristar

Telephone Number: (800) 377-3487


Claim Number: Starts with "3000‑" or contains the letter "C"

Administrator: Tristar

Telephone Number: (844) 322-8012


Claim Number: Starts with "5000‑" or contains the letter "D"

Administrator: Sedgwick

Telephone Number: (855) 238-4936

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