California Interrogatories in Workers' Compensation Cases

Key Differences in California Workers' Compensation Interrogatories

California law requires parties in a workers' compensation claim to exchange written interrogatories under Code of Civil Procedure sections 2030.010‑2030.410, but the process is tailored to the statutory framework of the Industrial Injuries Compensation Act. Unlike general civil litigation, interrogatories must focus on issues such as the employee's injury, medical treatment, wage loss, and employer's insurance coverage, and they are subject to stricter timing and objection rules.

Typical Scope of Interrogatories

Commonly asked questions include:

• Describe the nature and extent of the injury or illness.
• List all medical providers who have treated the employee and the dates of treatment.
• Detail the employee's wages before and after the injury, including overtime and bonuses.
• Identify any prior workers' compensation claims or related lawsuits.
• Specify the employer's workers' compensation policy limits and any supplemental coverage.

These interrogatories aim to clarify liability, benefits eligibility, and the calculation of indemnity.

Deadlines and Service Requirements

Both parties must serve interrogatories within 30 days after the filing of a petition or the issuance of a discovery demand. Responses, including any objections, must be served within 30 days of receipt, unless the court grants an extension. Failure to comply can result in a citation for contempt or a motion to compel.

Objections Specific to Workers' Compensation

California allows several objections that are frequently used in this context:

• Overbreadth: The interrogatory seeks information beyond the scope of workers' compensation issues.
• Privilege: Information is protected by attorney‑client or work‑product privilege.
• Undue Burden: The request requires excessive time, cost, or effort relative to its relevance.

When an objection is raised, the objecting party must state the specific ground and, if possible, provide a narrowed alternative.

Using Interrogatory Responses Strategically

Responses can be leveraged to:

• Establish the factual basis for a claim or defense.
• Identify inconsistencies that support a motion for summary judgment.
• Calculate accurate benefit amounts, including temporary disability and permanent disability payments.

Accurate, timely answers also reduce the need for costly depositions.

Sample Comparative Table